By using a surface air temperature index （SATI） averaged over the eastern Tibetan Plateau （TP）, investigation is conducted on the short-term climate variation associated with the interannual air warming （or cool...By using a surface air temperature index （SATI） averaged over the eastern Tibetan Plateau （TP）, investigation is conducted on the short-term climate variation associated with the interannual air warming （or cooling） over the TP in each summer month. Evidence suggests that the SATI is associated with a consistent teleconnection pattern extending from the TP to central-western Asia and southeastern Europe. Associated rainfall changes include, for a warming case, a drought in northern India in May and June, and a stronger mei-yu front in June. The latter is due to an intensified upper-level northeasterly in eastern China and a wetter and warmer condition over the eastern TP. In the East Asian regions, the time-space distributions of the correlation patterns between SATI and rainfall are more complex and exhibit large differences from month to month. Some studies have revealed a close relationship between the anomalous heating over the TP and the rainfall anomaly along the Yangtze River valley appearing in the summer on a seasonal mean time-scale, whereas in the present study, this relationship only appears in June and the signal＇s significance becomes weaker after the long-term trend in the data was excluded. Close correlations between SATI and the convection activity and SST also occur in the western Pacific in July and August： A zonally-elongated warm tone in the SST in the northwestern Pacific seems to be a passive response of the associated circulation related to a warm SATI. The SATI-associated teleconnection pattern provides a scenario consistently linking the broad summer rainfall anomalies in Europe, central-western Asia, India, and East Asia.展开更多
目的:探讨胎儿电子监护(CTG)计算机分析系统中短变异(Short term variation,STV)参数的临床界值及临床意义。方法:用CTG计算机分析系统FMExpert对637例足月、单胎孕妇的CTG记录共1579条进行分析,获取STV值及记录新生儿Apgar评分,并对其...目的:探讨胎儿电子监护(CTG)计算机分析系统中短变异(Short term variation,STV)参数的临床界值及临床意义。方法:用CTG计算机分析系统FMExpert对637例足月、单胎孕妇的CTG记录共1579条进行分析,获取STV值及记录新生儿Apgar评分,并对其中112例病例进行新生儿脐动脉血血气分析。结果:①1-Apgar评分和脐动脉血PH值与STV均有显著相关性(r=0.330,0.757;P<0.01);②STV≤3.5ms预测胎儿宫内窘迫的敏感性达100.00%,特异性达85.23%,假阳性率为14.77%,假阴性率为0,阳性预测价值为64.86%,阴性预测价值为100.00%。结论:①STV值与新生儿结局相关;②以STV≤3.5ms为临床界值对胎儿缺氧有较高的预测价值。展开更多
基金supported by the Key Laboratory of Meteorological Disaster of Ministry of Education (KLME050202 and 050205)the Jiangsu provincial 333 Talent Cultivation Projectthe Jiangsu provincial Qing-Lan Project and the Special Funds for Public Welfare of China [Grant No. GYHY(QX) 2007-6-26]Education Foundation, Hong Kong
文摘By using a surface air temperature index （SATI） averaged over the eastern Tibetan Plateau （TP）, investigation is conducted on the short-term climate variation associated with the interannual air warming （or cooling） over the TP in each summer month. Evidence suggests that the SATI is associated with a consistent teleconnection pattern extending from the TP to central-western Asia and southeastern Europe. Associated rainfall changes include, for a warming case, a drought in northern India in May and June, and a stronger mei-yu front in June. The latter is due to an intensified upper-level northeasterly in eastern China and a wetter and warmer condition over the eastern TP. In the East Asian regions, the time-space distributions of the correlation patterns between SATI and rainfall are more complex and exhibit large differences from month to month. Some studies have revealed a close relationship between the anomalous heating over the TP and the rainfall anomaly along the Yangtze River valley appearing in the summer on a seasonal mean time-scale, whereas in the present study, this relationship only appears in June and the signal＇s significance becomes weaker after the long-term trend in the data was excluded. Close correlations between SATI and the convection activity and SST also occur in the western Pacific in July and August： A zonally-elongated warm tone in the SST in the northwestern Pacific seems to be a passive response of the associated circulation related to a warm SATI. The SATI-associated teleconnection pattern provides a scenario consistently linking the broad summer rainfall anomalies in Europe, central-western Asia, India, and East Asia.
文摘目的:探讨胎儿电子监护(CTG)计算机分析系统中短变异(Short term variation,STV)参数的临床界值及临床意义。方法:用CTG计算机分析系统FMExpert对637例足月、单胎孕妇的CTG记录共1579条进行分析,获取STV值及记录新生儿Apgar评分,并对其中112例病例进行新生儿脐动脉血血气分析。结果:①1-Apgar评分和脐动脉血PH值与STV均有显著相关性(r=0.330,0.757;P<0.01);②STV≤3.5ms预测胎儿宫内窘迫的敏感性达100.00%,特异性达85.23%,假阳性率为14.77%,假阴性率为0,阳性预测价值为64.86%,阴性预测价值为100.00%。结论:①STV值与新生儿结局相关;②以STV≤3.5ms为临床界值对胎儿缺氧有较高的预测价值。
