By analyzing the observation data and performing the numerical simulation tests,it is shown that the Kara and the Barents Sea area is a key region to influence climate variation over the Northern Hemisphere.The variat...By analyzing the observation data and performing the numerical simulation tests,it is shown that the Kara and the Barents Sea area is a key region to influence climate variation over the Northern Hemisphere.The variation of winter sea-ice area in the key region is closely associated with that of the EU teleconnection pattern at 500 hPa and East Asia winter monsoon(EAWM) intensity.When a heavy sea-ice prevails in the key region,the EU teleconnection pattern at 500 hPa is excited easily(there are positive 500 hPa height anomalies over around Japan and West Europe),and winter Siberia high is weakened,meanwhile,sea level pressure(SLP)has positive anomalies over the Northern Pacific.Therefore,EAWM will be weakened,winter temperature over East Asia is above normal and the frequency of cold-air activity in February in China will be decreased.When the light sea-ice occurs in the key region,the results will be opposite.展开更多
Introduction: Obstetric emergencies are common throughout the world and more particularly in developing countries where they are responsible for high maternal-fetal mortality and morbidity. Objective: Study obstetric ...Introduction: Obstetric emergencies are common throughout the world and more particularly in developing countries where they are responsible for high maternal-fetal mortality and morbidity. Objective: Study obstetric emergencies in the maternity ward of Kara University Hospital. Method: Retrospective and descriptive study from April 1, 2022 to March 30, 2023, carried out in the Obstetrics and Gynecology Department of Kara University Hospital. Results: Eight hundred and thirty-five (835) obstetric emergencies were recorded out of 2215 admissions, i.e. a frequency of 37.7%. The average age of the patients was 26.7 with a range of 14 and 45 years. They were primigravidas (36.7%) and nulliparous (38.7%), referred (84.7%) and came from rural areas (72%). Emergencies occurred in the 3<sup>rd</sup> trimester in 74.1% and in parturients (54.1%). Preeclampsia (27%), cessation of progression of labor due to feto-pelvic disproportion (12.4%), postpartum hemorrhage (7.5%) constituted the main obstetric emergencies. In 44.8%, the delivery was carried out vaginally. Magnesium sulfate was the most used drug, i.e. 30.1%;followed by antihypertensive medications in 28.1%. Blood transfusion was performed in 24.3%. The evolution was simple in 90.9%. The maternal fatality rate was 1.6%. The perinatal case fatality rate was 12.3%. Conclusion: Obstetric emergencies are common, dominated by preeclampsia, stopping progress of labor and postpartum hemorrhages. They are responsible for high morbidity and mortality.展开更多
Introduction: Viral hepatitis B and C constitute real public health problems worldwide. The objective of this work was to describe the epidemiological, clinical and paraclinical aspects of viral hepatitis B and c in t...Introduction: Viral hepatitis B and C constitute real public health problems worldwide. The objective of this work was to describe the epidemiological, clinical and paraclinical aspects of viral hepatitis B and c in the internal medicine department of Kara University Hospital. Method: this was a retrospective descriptive study carried out in the Internal Medicine department of Kara University Hospital, over a period of 3 years from March 2020 to April 2023. It included all patients seen in consultation or hospitalized for hepatitis viral B and/or C. Results: A total of 57 patients were included in our study. The average age was 44.30 years ± 16.75 and the M/F sex ratio was 1.38. Married people were in the majority 63.2%. The circumstances of the discovery of viral hepatitis B and C were dominated by abdominal pain in 35.1% of cases and hepatomegaly in 29.8% of cases and in 33.3% of cases, it was during screening voluntary. Patients with viral hepatitis B only accounted for 64.9% of cases;those with only viral hepatitis C represented 31.6% of cases and 3.5% of cases had HVB/HCV co-infection. We recorded 36.8% complications including 52.4% liver cirrhosis and 47.6% hepatocellular carcinomas. During the evolution, there were 03 deaths. Conclusion: the prevalence of hepatitis B and C virus carriage in patients followed in internal medicine at Kara University Hospital is high. It is therefore essential to put in place treatment and prevention strategies against these viruses.展开更多
Objective: To analyze maternal deaths, identify causes and dysfunctions leading to these deaths in order to contribute to the implementation of strategies to reduce maternal mortality at CHU Kara. Method: Cross-sectio...Objective: To analyze maternal deaths, identify causes and dysfunctions leading to these deaths in order to contribute to the implementation of strategies to reduce maternal mortality at CHU Kara. Method: Cross-sectional descriptive study involving 65 cases of maternal deaths recorded at CHU-Kara from January 1, 2018 to June 30, 2021. Results: Our study focused on 65 cases of maternal deaths recorded at the maternity ward of CHU-Kara. The average age was 30 years, with a range of 15 to 45 years. They were mostly housewives (52.3%), uneducated (38.5%), multiparous (41.5%), and referred (86.2%). The causes were mainly direct obstetric causes (81.54%), with preeclampsia and its complications (28.30%) and immediate postpartum hemorrhage (20.75%) being the most common. However, uterine rupture (20.5%) and post-abortion sepsis (16.4%) were the most lethal etiologies. Delayed evacuation (46.43%), inadequate transportation (91%), and insufficient prenatal care (72.31%) were the dysfunctions before referral. Within the CHU Kara, delays in management (58.46%), unavailability of blood and labile products (18%), and insufficient monitoring were the dysfunctions identified. Ninety-five point four percent (95.4%) of the deaths were preventable. Conclusion: The magnitude of intrahospital maternal deaths, the various dysfunctions observed in the occurrence of maternal deaths before referral/evacuation and within the hospital highlight the importance of effectively implementing recommendations from audits in the fight against maternal mortality. The majority of the deaths were preventable (95.38%).展开更多
Introduction: Endoscopic internal urethrotomy (EIU) is a method for stricture opening using transurethral incision by direct visualisation of the urethral channel, resulting in a widening of the urinary canal with the...Introduction: Endoscopic internal urethrotomy (EIU) is a method for stricture opening using transurethral incision by direct visualisation of the urethral channel, resulting in a widening of the urinary canal with the aim of improving the quality of bladder emptying. The aim of the study was to evaluate the indication and results of EIU in the treatment of stenosis of the male urethra in the Urology-Andrology Department of Kara Teaching Hospital. Methodology: This was a cross-sectional descriptive study with retrospective data collection in the Urology-Andrology department of Kara Teaching Hospital. It involved 21 records of patients with urethral stenosis treated by endoscopic internal urethrotomy (EIU) in the said department during the period from January 2021 to September 2023. The following variables were evaluated: age, circumstance of discovery, site, length, number, etiology of the urethral stenosis and evolution of the patients. Results: The mean age of the patients was 59.2 ± 11.7 years. Infectious etiology of stenosis was predominant with 10 patients (47.6%) followed by trauma with 5 cases (23.8%). The bulbar urethra was the most frequently observed site, with 11 cases (52.4%). The length was mostly less than 2 cm in 12 patients (57.1%). Stenosis was unique in 14 patients (66.7%). The mean postoperative follow-up time was 3.2 months. The result was immediately better in 11 patients (52.4%) and it was poor in 8 patients (38.1%) who required maintenance dilation sessions.展开更多
Background: Urethral stricture is a pathology frequently encountered in urological practice. Management is often surgical, with possible recurrences. What about this pathology in Kara, a semi-urban city? Objective: As...Background: Urethral stricture is a pathology frequently encountered in urological practice. Management is often surgical, with possible recurrences. What about this pathology in Kara, a semi-urban city? Objective: Assess the management of male urethral stricture in Kara. Patients and Methods: This was a descriptive study with retrospective data collection. The study took place in the urology department of the teaching hospital of Kara, from December 2020 to December 2022. All cases of male urethral stricture, surgically treated at the teaching hospital of Kara, were listed. The inclusion criteria were as follows: any patient who had been treated surgically for male urethral stricture in the urology department of the teaching Hospital of Kara. The operating theater register and hospital records were used to collect the data. The diagnosis of urethral stricture had been made with retrograde urethrogram. A total of 24 patients were treated for male urethral stricture during the study period. The following variables were studied: age, reason for consultation, location, length, and etiology of the stricture;the type of treatment received: optical internal urethrotomy, or anastomotic urethroplasty, and the results. The result was considered good if, after removal of the urethral catheter, the patient regained his micturition without the need for dilatation;the result was considered average if, after removal of the urethral catheter, the patient needed one or more dilatation sessions to regain urination;the result was considered poor if, after removal of the catheter, the patient did not regain good micturition despite the urethral dilatation sessions. Microsoft excel and epi info 7 software were used for data processing. Results: The average age of our patients was 43.7 years ± 10.18 with extremes ranging from 27 to 70 years. The most represented age groups were that of 40 to 50 years, with 37.5% of cases;and that of 30 to 40 years with 33.3% of cases. The patients had consulted for urine retention in 66.6% of cases;展开更多
Background: The urology department of the teaching hospital of Kara is the second urology department in Togo, after that of the teaching hospital Sylvanus Olympio, in Lomé the capital. It is a very young service,...Background: The urology department of the teaching hospital of Kara is the second urology department in Togo, after that of the teaching hospital Sylvanus Olympio, in Lomé the capital. It is a very young service, created less than 5 years ago. Urological emergencies were previously managed by general surgeons, for lack of urologists. The influx of patients with urological pathologies has increased with the arrival of urologists. The update on urological emergencies having been made in Lomé, we therefore wanted to take stock of urological emergencies at the teaching hospital of Kara. Objective: To describe the epidemiological, clinical, and therapeutic aspects of urological emergencies received at the teaching hospital of Kara. Patients and Methods: This was a descriptive study with retrospective data collection. The study took place in the urology department, and in the surgical emergency department of the teaching hospital of Kara, over a period of 18 months, from January 2021 to June 2022. The on-call medical team consisted of the intern in on-call medicine, and an on-call urologist, whom the intern called upon when he received a urological emergency. Pediatric urological emergencies were managed by the pediatric surgeon and were not considered in our study. The operating room register, the surgical emergency consultation register, the urology department consultation register, and the records of patients hospitalized in the urology department were used for data collection. The following parameters were studied: age, sex, type of urological emergency, and therapeutic management;epi info 7 software was used for data processing. Results: The average age of the patients was 52.5 ± 19.6 years with extremes ranging from 16 years to 102 years. Note that 57.7% of the patients were over 50 years old. The sex ratio was 8.9. Urinary retention was the most common urological emergency in 47.7% (52) of cases;follow-up of infectious pathologies in 30.2% (33) of cases. Among the patients who had been seen for urinary retent展开更多
Introduction: cervical cancer is common with high mortality. It is diagnosed late in developing countries. Reducing mortality requires better knowledge and screening for cervical cancer. Objective: To study the knowle...Introduction: cervical cancer is common with high mortality. It is diagnosed late in developing countries. Reducing mortality requires better knowledge and screening for cervical cancer. Objective: To study the knowledge, attitudes and practices of midwives in the Kara region of cervical cancer screening. Methods: Cross-sectional, descriptive study from January 2020 to June 2020 conducted with midwives from the Kara region. Results: Fifty midwives participated in the study. The average age was 32.46 years and the majority (92%) had less than 10 years work experience. Thirty seven (74%) said that cervical cancer was due to human papillomavirus oncogenes and 32% to know the two commonly used screening methods (cervical cytology and VIA/VILI). Only 30% and 8% respectively know the pace and target of screening. They had all expressed the desire to be trained and to carry out routine screening. All of the respondents had never practiced a cervical cytology, and only 01 had once practiced VIA/VILI. Conclusion: Midwives have little knowledge of uterine cancer screening and do not practice it. They express the need to be trained in order to popularize the practice.展开更多
The HIS is recognised as an essential tool for optimising the management of a health establishment in particular and the health system in general. But it is still very little implemented in hospitals in the South. Ope...The HIS is recognised as an essential tool for optimising the management of a health establishment in particular and the health system in general. But it is still very little implemented in hospitals in the South. Open source HIS software, available on the Internet, can be a solution for starting a (HIS) project in these hospitals. A search on the Internet for open source HIS software allowed us to choose MedBoard, the second most popular open source software out of 381, to start an HIS project called PERFORMANCE at the Kara University Hospital in northern Togo. A questionnaire allowed us to assess the level of knowledge of health actors on hospital information systems. The results of this evaluation allowed us to strengthen our proposal. The analysis of the current computer park of the CHU Kara does not allow whatever the functionalities of MedBoard to implement PERFORMANCE at the CHU Kara. Logistics are needed to make PERFORMANCE work. The real difficulty to start and perpetuate HIS project is linked to the human factor.展开更多
The Arctic sea ice cover has declined at an unprecedented pace since the late 20th century. As a result, the feedback of sea ice anomalies for atmospheric circulation has been increasingly evidenced. While climatic mo...The Arctic sea ice cover has declined at an unprecedented pace since the late 20th century. As a result, the feedback of sea ice anomalies for atmospheric circulation has been increasingly evidenced. While climatic models almost consistently reproduced a decreasing trend of sea ice cover, the reported results show a large distribution. To evaluate the performance of models for simulating Arctic sea ice cover and its potential role in climate change, this study constructed a reasonable metric by synthesizing both linear trends and anomalies of sea ice. This study particularly focused on the Barents Sea and the Kara Sea, where sea ice anomalies have the highest potential to affect the atmosphere. The investigated models can be grouped into three categories according to their normalized skill scores. The strong contrast among the multi-model ensemble means of different groups demonstrates the robustness and rationality of this method. Potential factors that account for the different performances of climate models are further explored. The results show that model performance depends more on the ozone datasets that are prescribed by the model rather than on the chemical representation of ozone.展开更多
Background: The urology department of the Teaching Hospital of Kara is the 2nd urology department in Togo, Kara being a semi-urban town located 400 km from Lomé the capital. While for a long time only open surger...Background: The urology department of the Teaching Hospital of Kara is the 2nd urology department in Togo, Kara being a semi-urban town located 400 km from Lomé the capital. While for a long time only open surgery was used, the acquisition of urological endoscopic equipment in February 2021, has revolutionized the urological management of patients. Objective: Report the results of the first 15 months of urological endoscopy practice at the Kara Teaching Hospital, identify the particularities, announce the prospects. Patients and Methods. This was a retrospective and descriptive study, which took place in the urology department of the Kara Teaching Hospital, from February 2021 to April 2022, i.e. a period of 15 months. The register of operative reports and patient records were used for data collection. The following parameters were studied: age, sex, diagnosis, indication, diagnostic or therapeutic nature of the procedure, and results. EPI INFO 7.2.4.0 software was used for data analysis. Results: A total of 102 urological procedures (endoscopic and non-endoscopic) were performed during the study period;of the 102 interventions, 62 were endoscopic urological interventions, i.e., 60.7% of the interventions. The average age of patients treated was 55.5 years (±16.4) with extremes ranging from 28 to 87 years. Men accounted for 84% of patients treated. Prostatic hypertrophy was the most common urological pathology in our study, requiring endoscopic intervention in 40% of cases. Transurethral resection of the prostate was the most performed endoscopic procedure in our study with 43.5% of cases. The various endoscopic interventions resulted in success in 96.7% of cases. Conclusion: Urology nowadays cannot be done without endoscopy. At the Kara Teaching Hospital, the results are already promising after less than 24 months of endoscopic practice in urology. Advocacy must be made to political decision-makers, so that the situation is even better, for the good of both urologists and patients.展开更多
In the Arctic (mainly in its European sector) there is statistically detectable seasonal reversal wind pattern. The combination of seasonally warm (cold) land surfaces in arctic areas together with cool (cool) sea sur...In the Arctic (mainly in its European sector) there is statistically detectable seasonal reversal wind pattern. The combination of seasonally warm (cold) land surfaces in arctic areas together with cool (cool) sea surface of Arctic seas not covered by ice is conducive to the formation of a monsoon like system. On the other hand, the predominance of the cyclonic regime during all seasons makes it difficult to answer the question of whether the Arctic region belongs to the monsoon type pattern. In this study, the monsoon features of atmospheric circulation over the Barents and Kara Seas were analysed. To extract specific monsoon signs, atmospheric circulation systems (separately for areas of each sea) were divided into ten weather types. Their appearance and statistics were compared with indicators of regional circulation. A significant part of intra-annual monsoon variability is associated with the configuration of such modes as the North Atlantic Oscillation and the <em>Scandinavia</em> teleconnection patterns. For example, during the winter season, the monsoon currents (from land to sea) occur only with a positive North Atlantic Oscillation index. With the prevalence of other modes of variability, the direction of the winds can be different, and the regular monsoon circulation pattern is changed by chaotic regime. In summer, northern streams (from sea to land) are realized on the western periphery of cyclones, regenerating and stabilizing over the Kara Sea. As for anomalies, the nature of the monsoons is manifested in the statistics of extreme winds even without selecting data on the regimes of variability. So, in winter, maximum speeds fall on the southern streams, and in the summer—on the northern ones. Large precipitation anomalies during all seasons, as one would expect, are encountered most often with the cyclonic type of circulation.展开更多
<strong>Background:</strong> Large papillary excavations constitute a true differential diagnosis of glaucoma in our environments. <strong>Aim:</strong> To present a clinical case of large papi...<strong>Background:</strong> Large papillary excavations constitute a true differential diagnosis of glaucoma in our environments. <strong>Aim:</strong> To present a clinical case of large papillary excavation simulating glaucomatous optic neuropathy in a young subject. <strong>Case Presentation:</strong> The ophthalmologic examination made it possible to note a visual acuity of LogMar 0.00, ocular hypertonia and a large papillary excavation in both eyes. The visual field noted bilateral perimetric involvement suggesting optic neuropathy. Optical coherence tomography (OCT) of the ganglion complex revealed an absence of involvement of the ganglion complex and the ganglion ridge essential to evoke optic neuropathy. An ocular hypotonizing treatment made it possible to normalize the intraocular pressure. <strong>Conclusion:</strong> The particularity of this observation lies in the fact that the perimeter involvement that preceded any involvement can simulate a glaucomatous involvement. Functional damage to the visual field must be correlated with structural damage to suggest glaucomatous damage in our ophthalmic patients.展开更多
Nonlinear internal waves(NIWs) are ubiquitous around the Kara Sea, a part of the Arctic Ocean that is north of Siberia. Three hot spot sources for internal waves, one of which is the Kara Strait, have been identified ...Nonlinear internal waves(NIWs) are ubiquitous around the Kara Sea, a part of the Arctic Ocean that is north of Siberia. Three hot spot sources for internal waves, one of which is the Kara Strait, have been identified based on Envisat ASAR. The generation and evolution of the NIWs through the interactions of the tide and topography across the strait is studied based on a nonhydrostatic numerical model. The model captures most wave characteristics shown by satellite data. A typical inter-packets distance on the Barents Sea side is about 25 km in summer, with a phase speed about 0.65 m/s. A northward background current may intensify the accumulation of energy during generation, but it has little influence on the other properties of the generated waves. The single internal solitary wave(ISW) structure is a special phenomenon that follows major wave trains, with a distance about 5–8 km. This wave is generated with the leading wave packets during the same tidal period. When a steady current toward the Kara Sea is included, the basic generation process is similar, but the waves toward the Kara Sea weaken and display an internal bore-like structure with smaller amplitude than in the control experiment. In winter, due to the growth of sea ice, stratification across the Kara Strait is mainly determined by the salinity, with an almost uniform temperature close to freezing. A pycnocline deepens near the middle of the water depth(Barents Sea side), and the NIWs process is not as important as the NIWs process in summer. There is no fission process during the simulation.展开更多
<strong>Background:</strong> Ocular coloboma is the product of an error in the fetal fissure closure, normally occurring between the fifth and sixth weeks of gestation <a href="#R1" target=&qu...<strong>Background:</strong> Ocular coloboma is the product of an error in the fetal fissure closure, normally occurring between the fifth and sixth weeks of gestation <a href="#R1" target="_blank">[1]</a>. It may involve the cornea, iris, zonula, ciliary body, choroid, retina and optic nerve. The incidence of this syndrome is 0.7 per 10,000 live-births <a href="#R1" target="_blank">[1]</a>. The aim of this observation is to present the first case of bilateral coloboma of the iris <a href="#R1" target="_blank">[1]</a>. This case was associated with an ametropia causing a decrease in visual acuity. <strong>Case Presentation:</strong> This was a clinical observation concerning a young 12-year-old patient who consulted for blurring of vision which had progressed for approximately 2 years. The ophthalmologic examination revealed an ametropia with a bilateral notch of the pupillary rim suggesting a bilateral coloboma. There was no association with another coloboma such as chorioretinal coloboma which is quite common and is accompanied frequently by visual symptoms. <strong>Conclusion:</strong> A visual impairment of the child can indicate ametropia. However, other congenital anomalies can be discovered as was the case in this clinical observation.展开更多
Extreme values of wind speed were studied based on the highly detailed ERA5 dataset covering the central part of the Kara Sea. Cases in which the ice coverage of the cells exceeded 15% were filtered. Our study shows t...Extreme values of wind speed were studied based on the highly detailed ERA5 dataset covering the central part of the Kara Sea. Cases in which the ice coverage of the cells exceeded 15% were filtered. Our study shows that the wind speed extrema obtained from station observations, as well as from modelling results in the framework of mesoscale models, can be divided into two groups according to their probability distribution laws. One group is specifically designated as black swans, with the other referred to as dragons (or dragon-kings). In this study we determined that the data of ERA5 accurately described the swans, but did not fully reproduce extrema related to the dragons;these extrema were identified only in half of ERA5 grid points. Weibull probability distribution function (PDF) parameters were identified in only a quarter of the pixels. The parameters were connected almost deterministically. This converted the Weibull function into a one-parameter dependence. It was not clear whether this uniqueness was a consequence of the features of the calculation algorithm used in ERA5, or whether it was a consequence of a relatively small area being considered, which had the same wind regime. Extremes of wind speed arise as mesoscale features and are associated with hydrodynamic features of the wind flow. If the flow was non-geostrophic and if its trajectory had a substantial curvature, then the extreme velocities were distributed according to a rule similar to the Weibull law.展开更多
<strong>Objectives:</strong> To evaluate the practice of self-care in diabetic patients monitored at the Kara Teaching Hospital, known as CHU Kara. <strong>Method:</strong> We conducted a quant...<strong>Objectives:</strong> To evaluate the practice of self-care in diabetic patients monitored at the Kara Teaching Hospital, known as CHU Kara. <strong>Method:</strong> We conducted a quantitative, descriptive and cross-sectional study of 40 diabetic patients monitored at the Kara CHU. The data collection took place from February 20 to May 28, 2018 and the data was collected anonymously. <strong>Results:</strong> Out of the forty (40) respondents, 60% were male with a sex ratio of 1.5 and an average age of 56.15 years. Two-thirds (2/3) of the patients did not have the blood glucose meter. More than half (52%) did not know the normal blood glucose value and 82.5% were on a low carbohydrate diet. Eighty-two point fifty percent (82.50%) were under Oral antidiabetic (ADO). Forty percent (40%) of patients often forgot their medication. Forty-seven point-fifty percent reported frequent episodes of hypoglycaemia with dizziness (58%), tremors (53%), hunger (53%), sweat (37%), tingling (26%) and the most common gestures were: sugar ingestion (53%) and glycemic control (26%). Eighty-five (85%) said they used to feel hyperglycemia with fatigue (76%), polyuria (65%), polydipsia (44%) the most common precursors and the most frequent interventions were taking hypoglycemic drugs (74%) and controlling blood glucose (24%). <strong>Conclusion:</strong> The practice of self-care remains risky for diabetic patients. Hence the need for the establishment of adequate therapeutic education programs.展开更多
A 606 year runoff reconstruction of the Kara Darya River was developed, based on the tree-ring width chronology of Turkestan juniper(Juniperus turkestanica) from the Pamir-Alai Mountains of Kyrgyzstan. Preliminary com...A 606 year runoff reconstruction of the Kara Darya River was developed, based on the tree-ring width chronology of Turkestan juniper(Juniperus turkestanica) from the Pamir-Alai Mountains of Kyrgyzstan. Preliminary comparison between the snow cover variation and these climate/runoff reconstructions found that Central Asian snow cover may have strong associations with large-scale ocean-atmosphere-land circulations. The runoff reconstruction demonstrated that instrumental runoff was not representative of runoff over the past 606 years. The drought of the 1960 s-1990 s resulted in low runoff levels during the past 50 years;however, this probably does not represent a worst-case scenario for the Kara Darya because the runoff reconstruction showed additional extremely low runoff prior to the 20 th century. The reconstruction will provide a long-term perspective on runoff variation in the Kara Darya River basin, aid sustainable water resource management and be useful in guiding expectations of future variations and water resource planning.展开更多
The Tibetan Plateau(TP)is characterized by heavily local dust activities,however,the mechanism of interannual variations of winter dust frequency over the TP remain poorly understood.Previous studies showed the autumn...The Tibetan Plateau(TP)is characterized by heavily local dust activities,however,the mechanism of interannual variations of winter dust frequency over the TP remain poorly understood.Previous studies showed the autumn Arctic sea ice could significantly influence the winter climate over Eurasia.Whether autumn sea ice affects winter dust activity over the TP or not?Here,we used an integrated surface database to investigate possible mechanisms for interannual variability in the frequency of winter dust events above the TP.This variability,which is thought to be mainly caused by local dust emissions,shows significant correlations with sea ice concentration(SIC)in the Barents and Kara Seas during the preceding autumn.Low Barents-Kara SIC is accompanied by reduced snow depth over northern Eurasia between autumn and winter,which can enhance the Eurasian mid-latitude westerly jet stream.This strengthening increases the cyclogenesis and occurrence of strong surface wind speeds in winter,especially over the TP.In addition,a lower SIC is closely associated with reduced precipitation and snow cover in late autumn and winter over the TP,which in turn enhances warming of the land surface and reduces the area of frozen ground.These anomalies in atmospheric circulation patterns and local surface conditions promote dust events above the TP during winter.The ensemble means of Atmospheric Model Intercomparison Project experiments from Phase 6 of the Coupled Model Inter-comparison Project and the Community Atmosphere Model version 4 can generally reproduce the atmospheric circulation anomalies associated with decreased Barents-Kara SIC.This study reveals the crucial effect that SIC anomalies in the Barents and Kara Seas have on winter dust activities over the TP.展开更多
基金This paper is supported by the National Key Program"96-908".
文摘By analyzing the observation data and performing the numerical simulation tests,it is shown that the Kara and the Barents Sea area is a key region to influence climate variation over the Northern Hemisphere.The variation of winter sea-ice area in the key region is closely associated with that of the EU teleconnection pattern at 500 hPa and East Asia winter monsoon(EAWM) intensity.When a heavy sea-ice prevails in the key region,the EU teleconnection pattern at 500 hPa is excited easily(there are positive 500 hPa height anomalies over around Japan and West Europe),and winter Siberia high is weakened,meanwhile,sea level pressure(SLP)has positive anomalies over the Northern Pacific.Therefore,EAWM will be weakened,winter temperature over East Asia is above normal and the frequency of cold-air activity in February in China will be decreased.When the light sea-ice occurs in the key region,the results will be opposite.
文摘Introduction: Obstetric emergencies are common throughout the world and more particularly in developing countries where they are responsible for high maternal-fetal mortality and morbidity. Objective: Study obstetric emergencies in the maternity ward of Kara University Hospital. Method: Retrospective and descriptive study from April 1, 2022 to March 30, 2023, carried out in the Obstetrics and Gynecology Department of Kara University Hospital. Results: Eight hundred and thirty-five (835) obstetric emergencies were recorded out of 2215 admissions, i.e. a frequency of 37.7%. The average age of the patients was 26.7 with a range of 14 and 45 years. They were primigravidas (36.7%) and nulliparous (38.7%), referred (84.7%) and came from rural areas (72%). Emergencies occurred in the 3<sup>rd</sup> trimester in 74.1% and in parturients (54.1%). Preeclampsia (27%), cessation of progression of labor due to feto-pelvic disproportion (12.4%), postpartum hemorrhage (7.5%) constituted the main obstetric emergencies. In 44.8%, the delivery was carried out vaginally. Magnesium sulfate was the most used drug, i.e. 30.1%;followed by antihypertensive medications in 28.1%. Blood transfusion was performed in 24.3%. The evolution was simple in 90.9%. The maternal fatality rate was 1.6%. The perinatal case fatality rate was 12.3%. Conclusion: Obstetric emergencies are common, dominated by preeclampsia, stopping progress of labor and postpartum hemorrhages. They are responsible for high morbidity and mortality.
文摘Introduction: Viral hepatitis B and C constitute real public health problems worldwide. The objective of this work was to describe the epidemiological, clinical and paraclinical aspects of viral hepatitis B and c in the internal medicine department of Kara University Hospital. Method: this was a retrospective descriptive study carried out in the Internal Medicine department of Kara University Hospital, over a period of 3 years from March 2020 to April 2023. It included all patients seen in consultation or hospitalized for hepatitis viral B and/or C. Results: A total of 57 patients were included in our study. The average age was 44.30 years ± 16.75 and the M/F sex ratio was 1.38. Married people were in the majority 63.2%. The circumstances of the discovery of viral hepatitis B and C were dominated by abdominal pain in 35.1% of cases and hepatomegaly in 29.8% of cases and in 33.3% of cases, it was during screening voluntary. Patients with viral hepatitis B only accounted for 64.9% of cases;those with only viral hepatitis C represented 31.6% of cases and 3.5% of cases had HVB/HCV co-infection. We recorded 36.8% complications including 52.4% liver cirrhosis and 47.6% hepatocellular carcinomas. During the evolution, there were 03 deaths. Conclusion: the prevalence of hepatitis B and C virus carriage in patients followed in internal medicine at Kara University Hospital is high. It is therefore essential to put in place treatment and prevention strategies against these viruses.
文摘Objective: To analyze maternal deaths, identify causes and dysfunctions leading to these deaths in order to contribute to the implementation of strategies to reduce maternal mortality at CHU Kara. Method: Cross-sectional descriptive study involving 65 cases of maternal deaths recorded at CHU-Kara from January 1, 2018 to June 30, 2021. Results: Our study focused on 65 cases of maternal deaths recorded at the maternity ward of CHU-Kara. The average age was 30 years, with a range of 15 to 45 years. They were mostly housewives (52.3%), uneducated (38.5%), multiparous (41.5%), and referred (86.2%). The causes were mainly direct obstetric causes (81.54%), with preeclampsia and its complications (28.30%) and immediate postpartum hemorrhage (20.75%) being the most common. However, uterine rupture (20.5%) and post-abortion sepsis (16.4%) were the most lethal etiologies. Delayed evacuation (46.43%), inadequate transportation (91%), and insufficient prenatal care (72.31%) were the dysfunctions before referral. Within the CHU Kara, delays in management (58.46%), unavailability of blood and labile products (18%), and insufficient monitoring were the dysfunctions identified. Ninety-five point four percent (95.4%) of the deaths were preventable. Conclusion: The magnitude of intrahospital maternal deaths, the various dysfunctions observed in the occurrence of maternal deaths before referral/evacuation and within the hospital highlight the importance of effectively implementing recommendations from audits in the fight against maternal mortality. The majority of the deaths were preventable (95.38%).
文摘Introduction: Endoscopic internal urethrotomy (EIU) is a method for stricture opening using transurethral incision by direct visualisation of the urethral channel, resulting in a widening of the urinary canal with the aim of improving the quality of bladder emptying. The aim of the study was to evaluate the indication and results of EIU in the treatment of stenosis of the male urethra in the Urology-Andrology Department of Kara Teaching Hospital. Methodology: This was a cross-sectional descriptive study with retrospective data collection in the Urology-Andrology department of Kara Teaching Hospital. It involved 21 records of patients with urethral stenosis treated by endoscopic internal urethrotomy (EIU) in the said department during the period from January 2021 to September 2023. The following variables were evaluated: age, circumstance of discovery, site, length, number, etiology of the urethral stenosis and evolution of the patients. Results: The mean age of the patients was 59.2 ± 11.7 years. Infectious etiology of stenosis was predominant with 10 patients (47.6%) followed by trauma with 5 cases (23.8%). The bulbar urethra was the most frequently observed site, with 11 cases (52.4%). The length was mostly less than 2 cm in 12 patients (57.1%). Stenosis was unique in 14 patients (66.7%). The mean postoperative follow-up time was 3.2 months. The result was immediately better in 11 patients (52.4%) and it was poor in 8 patients (38.1%) who required maintenance dilation sessions.
文摘Background: Urethral stricture is a pathology frequently encountered in urological practice. Management is often surgical, with possible recurrences. What about this pathology in Kara, a semi-urban city? Objective: Assess the management of male urethral stricture in Kara. Patients and Methods: This was a descriptive study with retrospective data collection. The study took place in the urology department of the teaching hospital of Kara, from December 2020 to December 2022. All cases of male urethral stricture, surgically treated at the teaching hospital of Kara, were listed. The inclusion criteria were as follows: any patient who had been treated surgically for male urethral stricture in the urology department of the teaching Hospital of Kara. The operating theater register and hospital records were used to collect the data. The diagnosis of urethral stricture had been made with retrograde urethrogram. A total of 24 patients were treated for male urethral stricture during the study period. The following variables were studied: age, reason for consultation, location, length, and etiology of the stricture;the type of treatment received: optical internal urethrotomy, or anastomotic urethroplasty, and the results. The result was considered good if, after removal of the urethral catheter, the patient regained his micturition without the need for dilatation;the result was considered average if, after removal of the urethral catheter, the patient needed one or more dilatation sessions to regain urination;the result was considered poor if, after removal of the catheter, the patient did not regain good micturition despite the urethral dilatation sessions. Microsoft excel and epi info 7 software were used for data processing. Results: The average age of our patients was 43.7 years ± 10.18 with extremes ranging from 27 to 70 years. The most represented age groups were that of 40 to 50 years, with 37.5% of cases;and that of 30 to 40 years with 33.3% of cases. The patients had consulted for urine retention in 66.6% of cases;
文摘Background: The urology department of the teaching hospital of Kara is the second urology department in Togo, after that of the teaching hospital Sylvanus Olympio, in Lomé the capital. It is a very young service, created less than 5 years ago. Urological emergencies were previously managed by general surgeons, for lack of urologists. The influx of patients with urological pathologies has increased with the arrival of urologists. The update on urological emergencies having been made in Lomé, we therefore wanted to take stock of urological emergencies at the teaching hospital of Kara. Objective: To describe the epidemiological, clinical, and therapeutic aspects of urological emergencies received at the teaching hospital of Kara. Patients and Methods: This was a descriptive study with retrospective data collection. The study took place in the urology department, and in the surgical emergency department of the teaching hospital of Kara, over a period of 18 months, from January 2021 to June 2022. The on-call medical team consisted of the intern in on-call medicine, and an on-call urologist, whom the intern called upon when he received a urological emergency. Pediatric urological emergencies were managed by the pediatric surgeon and were not considered in our study. The operating room register, the surgical emergency consultation register, the urology department consultation register, and the records of patients hospitalized in the urology department were used for data collection. The following parameters were studied: age, sex, type of urological emergency, and therapeutic management;epi info 7 software was used for data processing. Results: The average age of the patients was 52.5 ± 19.6 years with extremes ranging from 16 years to 102 years. Note that 57.7% of the patients were over 50 years old. The sex ratio was 8.9. Urinary retention was the most common urological emergency in 47.7% (52) of cases;follow-up of infectious pathologies in 30.2% (33) of cases. Among the patients who had been seen for urinary retent
文摘Introduction: cervical cancer is common with high mortality. It is diagnosed late in developing countries. Reducing mortality requires better knowledge and screening for cervical cancer. Objective: To study the knowledge, attitudes and practices of midwives in the Kara region of cervical cancer screening. Methods: Cross-sectional, descriptive study from January 2020 to June 2020 conducted with midwives from the Kara region. Results: Fifty midwives participated in the study. The average age was 32.46 years and the majority (92%) had less than 10 years work experience. Thirty seven (74%) said that cervical cancer was due to human papillomavirus oncogenes and 32% to know the two commonly used screening methods (cervical cytology and VIA/VILI). Only 30% and 8% respectively know the pace and target of screening. They had all expressed the desire to be trained and to carry out routine screening. All of the respondents had never practiced a cervical cytology, and only 01 had once practiced VIA/VILI. Conclusion: Midwives have little knowledge of uterine cancer screening and do not practice it. They express the need to be trained in order to popularize the practice.
文摘The HIS is recognised as an essential tool for optimising the management of a health establishment in particular and the health system in general. But it is still very little implemented in hospitals in the South. Open source HIS software, available on the Internet, can be a solution for starting a (HIS) project in these hospitals. A search on the Internet for open source HIS software allowed us to choose MedBoard, the second most popular open source software out of 381, to start an HIS project called PERFORMANCE at the Kara University Hospital in northern Togo. A questionnaire allowed us to assess the level of knowledge of health actors on hospital information systems. The results of this evaluation allowed us to strengthen our proposal. The analysis of the current computer park of the CHU Kara does not allow whatever the functionalities of MedBoard to implement PERFORMANCE at the CHU Kara. Logistics are needed to make PERFORMANCE work. The real difficulty to start and perpetuate HIS project is linked to the human factor.
基金The National Natural Science Foundation of China under contract Nos 41576178 and 41630963the National Basic Research Program(973 program)of China under contract No.2015CB954004
文摘The Arctic sea ice cover has declined at an unprecedented pace since the late 20th century. As a result, the feedback of sea ice anomalies for atmospheric circulation has been increasingly evidenced. While climatic models almost consistently reproduced a decreasing trend of sea ice cover, the reported results show a large distribution. To evaluate the performance of models for simulating Arctic sea ice cover and its potential role in climate change, this study constructed a reasonable metric by synthesizing both linear trends and anomalies of sea ice. This study particularly focused on the Barents Sea and the Kara Sea, where sea ice anomalies have the highest potential to affect the atmosphere. The investigated models can be grouped into three categories according to their normalized skill scores. The strong contrast among the multi-model ensemble means of different groups demonstrates the robustness and rationality of this method. Potential factors that account for the different performances of climate models are further explored. The results show that model performance depends more on the ozone datasets that are prescribed by the model rather than on the chemical representation of ozone.
文摘Background: The urology department of the Teaching Hospital of Kara is the 2nd urology department in Togo, Kara being a semi-urban town located 400 km from Lomé the capital. While for a long time only open surgery was used, the acquisition of urological endoscopic equipment in February 2021, has revolutionized the urological management of patients. Objective: Report the results of the first 15 months of urological endoscopy practice at the Kara Teaching Hospital, identify the particularities, announce the prospects. Patients and Methods. This was a retrospective and descriptive study, which took place in the urology department of the Kara Teaching Hospital, from February 2021 to April 2022, i.e. a period of 15 months. The register of operative reports and patient records were used for data collection. The following parameters were studied: age, sex, diagnosis, indication, diagnostic or therapeutic nature of the procedure, and results. EPI INFO 7.2.4.0 software was used for data analysis. Results: A total of 102 urological procedures (endoscopic and non-endoscopic) were performed during the study period;of the 102 interventions, 62 were endoscopic urological interventions, i.e., 60.7% of the interventions. The average age of patients treated was 55.5 years (±16.4) with extremes ranging from 28 to 87 years. Men accounted for 84% of patients treated. Prostatic hypertrophy was the most common urological pathology in our study, requiring endoscopic intervention in 40% of cases. Transurethral resection of the prostate was the most performed endoscopic procedure in our study with 43.5% of cases. The various endoscopic interventions resulted in success in 96.7% of cases. Conclusion: Urology nowadays cannot be done without endoscopy. At the Kara Teaching Hospital, the results are already promising after less than 24 months of endoscopic practice in urology. Advocacy must be made to political decision-makers, so that the situation is even better, for the good of both urologists and patients.
文摘In the Arctic (mainly in its European sector) there is statistically detectable seasonal reversal wind pattern. The combination of seasonally warm (cold) land surfaces in arctic areas together with cool (cool) sea surface of Arctic seas not covered by ice is conducive to the formation of a monsoon like system. On the other hand, the predominance of the cyclonic regime during all seasons makes it difficult to answer the question of whether the Arctic region belongs to the monsoon type pattern. In this study, the monsoon features of atmospheric circulation over the Barents and Kara Seas were analysed. To extract specific monsoon signs, atmospheric circulation systems (separately for areas of each sea) were divided into ten weather types. Their appearance and statistics were compared with indicators of regional circulation. A significant part of intra-annual monsoon variability is associated with the configuration of such modes as the North Atlantic Oscillation and the <em>Scandinavia</em> teleconnection patterns. For example, during the winter season, the monsoon currents (from land to sea) occur only with a positive North Atlantic Oscillation index. With the prevalence of other modes of variability, the direction of the winds can be different, and the regular monsoon circulation pattern is changed by chaotic regime. In summer, northern streams (from sea to land) are realized on the western periphery of cyclones, regenerating and stabilizing over the Kara Sea. As for anomalies, the nature of the monsoons is manifested in the statistics of extreme winds even without selecting data on the regimes of variability. So, in winter, maximum speeds fall on the southern streams, and in the summer—on the northern ones. Large precipitation anomalies during all seasons, as one would expect, are encountered most often with the cyclonic type of circulation.
文摘<strong>Background:</strong> Large papillary excavations constitute a true differential diagnosis of glaucoma in our environments. <strong>Aim:</strong> To present a clinical case of large papillary excavation simulating glaucomatous optic neuropathy in a young subject. <strong>Case Presentation:</strong> The ophthalmologic examination made it possible to note a visual acuity of LogMar 0.00, ocular hypertonia and a large papillary excavation in both eyes. The visual field noted bilateral perimetric involvement suggesting optic neuropathy. Optical coherence tomography (OCT) of the ganglion complex revealed an absence of involvement of the ganglion complex and the ganglion ridge essential to evoke optic neuropathy. An ocular hypotonizing treatment made it possible to normalize the intraocular pressure. <strong>Conclusion:</strong> The particularity of this observation lies in the fact that the perimeter involvement that preceded any involvement can simulate a glaucomatous involvement. Functional damage to the visual field must be correlated with structural damage to suggest glaucomatous damage in our ophthalmic patients.
基金The National Key Research and Development Program of China under contract No.2016YFC1402705the National Natural Science Foundation of China under contract No.41576189
文摘Nonlinear internal waves(NIWs) are ubiquitous around the Kara Sea, a part of the Arctic Ocean that is north of Siberia. Three hot spot sources for internal waves, one of which is the Kara Strait, have been identified based on Envisat ASAR. The generation and evolution of the NIWs through the interactions of the tide and topography across the strait is studied based on a nonhydrostatic numerical model. The model captures most wave characteristics shown by satellite data. A typical inter-packets distance on the Barents Sea side is about 25 km in summer, with a phase speed about 0.65 m/s. A northward background current may intensify the accumulation of energy during generation, but it has little influence on the other properties of the generated waves. The single internal solitary wave(ISW) structure is a special phenomenon that follows major wave trains, with a distance about 5–8 km. This wave is generated with the leading wave packets during the same tidal period. When a steady current toward the Kara Sea is included, the basic generation process is similar, but the waves toward the Kara Sea weaken and display an internal bore-like structure with smaller amplitude than in the control experiment. In winter, due to the growth of sea ice, stratification across the Kara Strait is mainly determined by the salinity, with an almost uniform temperature close to freezing. A pycnocline deepens near the middle of the water depth(Barents Sea side), and the NIWs process is not as important as the NIWs process in summer. There is no fission process during the simulation.
文摘<strong>Background:</strong> Ocular coloboma is the product of an error in the fetal fissure closure, normally occurring between the fifth and sixth weeks of gestation <a href="#R1" target="_blank">[1]</a>. It may involve the cornea, iris, zonula, ciliary body, choroid, retina and optic nerve. The incidence of this syndrome is 0.7 per 10,000 live-births <a href="#R1" target="_blank">[1]</a>. The aim of this observation is to present the first case of bilateral coloboma of the iris <a href="#R1" target="_blank">[1]</a>. This case was associated with an ametropia causing a decrease in visual acuity. <strong>Case Presentation:</strong> This was a clinical observation concerning a young 12-year-old patient who consulted for blurring of vision which had progressed for approximately 2 years. The ophthalmologic examination revealed an ametropia with a bilateral notch of the pupillary rim suggesting a bilateral coloboma. There was no association with another coloboma such as chorioretinal coloboma which is quite common and is accompanied frequently by visual symptoms. <strong>Conclusion:</strong> A visual impairment of the child can indicate ametropia. However, other congenital anomalies can be discovered as was the case in this clinical observation.
文摘Extreme values of wind speed were studied based on the highly detailed ERA5 dataset covering the central part of the Kara Sea. Cases in which the ice coverage of the cells exceeded 15% were filtered. Our study shows that the wind speed extrema obtained from station observations, as well as from modelling results in the framework of mesoscale models, can be divided into two groups according to their probability distribution laws. One group is specifically designated as black swans, with the other referred to as dragons (or dragon-kings). In this study we determined that the data of ERA5 accurately described the swans, but did not fully reproduce extrema related to the dragons;these extrema were identified only in half of ERA5 grid points. Weibull probability distribution function (PDF) parameters were identified in only a quarter of the pixels. The parameters were connected almost deterministically. This converted the Weibull function into a one-parameter dependence. It was not clear whether this uniqueness was a consequence of the features of the calculation algorithm used in ERA5, or whether it was a consequence of a relatively small area being considered, which had the same wind regime. Extremes of wind speed arise as mesoscale features and are associated with hydrodynamic features of the wind flow. If the flow was non-geostrophic and if its trajectory had a substantial curvature, then the extreme velocities were distributed according to a rule similar to the Weibull law.
文摘<strong>Objectives:</strong> To evaluate the practice of self-care in diabetic patients monitored at the Kara Teaching Hospital, known as CHU Kara. <strong>Method:</strong> We conducted a quantitative, descriptive and cross-sectional study of 40 diabetic patients monitored at the Kara CHU. The data collection took place from February 20 to May 28, 2018 and the data was collected anonymously. <strong>Results:</strong> Out of the forty (40) respondents, 60% were male with a sex ratio of 1.5 and an average age of 56.15 years. Two-thirds (2/3) of the patients did not have the blood glucose meter. More than half (52%) did not know the normal blood glucose value and 82.5% were on a low carbohydrate diet. Eighty-two point fifty percent (82.50%) were under Oral antidiabetic (ADO). Forty percent (40%) of patients often forgot their medication. Forty-seven point-fifty percent reported frequent episodes of hypoglycaemia with dizziness (58%), tremors (53%), hunger (53%), sweat (37%), tingling (26%) and the most common gestures were: sugar ingestion (53%) and glycemic control (26%). Eighty-five (85%) said they used to feel hyperglycemia with fatigue (76%), polyuria (65%), polydipsia (44%) the most common precursors and the most frequent interventions were taking hypoglycemic drugs (74%) and controlling blood glucose (24%). <strong>Conclusion:</strong> The practice of self-care remains risky for diabetic patients. Hence the need for the establishment of adequate therapeutic education programs.
基金This work was supported by the National Key R&D Program of China (2018YFA0606401)NSFC (U1803341)+1 种基金the 2nd Scientific Expedition to the Qinghai-Tibet Plateau (No. 2019QZKK0102)the national youth talent support program
文摘A 606 year runoff reconstruction of the Kara Darya River was developed, based on the tree-ring width chronology of Turkestan juniper(Juniperus turkestanica) from the Pamir-Alai Mountains of Kyrgyzstan. Preliminary comparison between the snow cover variation and these climate/runoff reconstructions found that Central Asian snow cover may have strong associations with large-scale ocean-atmosphere-land circulations. The runoff reconstruction demonstrated that instrumental runoff was not representative of runoff over the past 606 years. The drought of the 1960 s-1990 s resulted in low runoff levels during the past 50 years;however, this probably does not represent a worst-case scenario for the Kara Darya because the runoff reconstruction showed additional extremely low runoff prior to the 20 th century. The reconstruction will provide a long-term perspective on runoff variation in the Kara Darya River basin, aid sustainable water resource management and be useful in guiding expectations of future variations and water resource planning.
基金Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(Grant 2019QZKK0103)National Natural Science Foundation of China(Grants 41790472,41805127)+1 种基金Youth Innovation Promotion Association Chinese Academy of Sciences(2020071,Chao You)Special Research Assistant Project of the Chinese Academy of Sciences(Chao Xu).
文摘The Tibetan Plateau(TP)is characterized by heavily local dust activities,however,the mechanism of interannual variations of winter dust frequency over the TP remain poorly understood.Previous studies showed the autumn Arctic sea ice could significantly influence the winter climate over Eurasia.Whether autumn sea ice affects winter dust activity over the TP or not?Here,we used an integrated surface database to investigate possible mechanisms for interannual variability in the frequency of winter dust events above the TP.This variability,which is thought to be mainly caused by local dust emissions,shows significant correlations with sea ice concentration(SIC)in the Barents and Kara Seas during the preceding autumn.Low Barents-Kara SIC is accompanied by reduced snow depth over northern Eurasia between autumn and winter,which can enhance the Eurasian mid-latitude westerly jet stream.This strengthening increases the cyclogenesis and occurrence of strong surface wind speeds in winter,especially over the TP.In addition,a lower SIC is closely associated with reduced precipitation and snow cover in late autumn and winter over the TP,which in turn enhances warming of the land surface and reduces the area of frozen ground.These anomalies in atmospheric circulation patterns and local surface conditions promote dust events above the TP during winter.The ensemble means of Atmospheric Model Intercomparison Project experiments from Phase 6 of the Coupled Model Inter-comparison Project and the Community Atmosphere Model version 4 can generally reproduce the atmospheric circulation anomalies associated with decreased Barents-Kara SIC.This study reveals the crucial effect that SIC anomalies in the Barents and Kara Seas have on winter dust activities over the TP.
