摘要
利用臭氧观测仪(OMI)和扫描成像大气吸收光谱仪(SCIAMACHY)传感器反演的臭氧总量数据,结合从世界臭氧与紫外线辐射数据中心(WODUC)获取的地面观测臭氧总量数据进行验证,对比2种不同卫星遥感反演的臭氧总量产品优缺点,并分析亚洲地区臭氧总量的时空特征.结果表明,OMI反演的结果比SCIAMACHY的结果更好,而且具有更高的时间和空间分辨率.臭氧总量存在明显的季节变化,在低纬度地区最大值出现在4或5月,最小值在11或12月,而在高纬度地区则分别出现在2月或3月和8月或9月.臭氧总量纬度地带性分布明显,并随着纬度增加而逐渐上升,在10°N^30°N之间,臭氧总量增长平缓,在30°N^50°N之间,臭氧总量快速增大.在青藏高原地区出现臭氧低值区,并在青藏高原东面的横断山脉向低纬度延伸,隔断了臭氧总量的纬度地带性分布.臭氧总量变化在不同纬度呈现不同的模式,距平值随纬度的增大波动随之增大.纬度最低的站点(216)臭氧总量距平值变化最小,最大只有30 DU;而纬度最高的站点(326)臭氧总量距平值变化可达180 DU以上.
Using the total ozone products derived from ozone monitoring instrument（OMI） and scanning imaging absorption spectrometer for atmospheric chartography（SCIAMACHY）,and validated by the ground based measured total ozone data from WODUC.The temporal and spatial characteristics of total ozone over Asia region was analyzed based on the remotely sensed datasets.The validation result indicates that there are higher accurate of the OMI retrieved total ozone data than SCIAMACHY＇s,and OMI data has higher resolution both temporal and spatial-scales.The seasonal variation of total ozone presents obvious pattern,the largest value appear in April and May,and the smallest value often appear in November and December over lower latitude areas,respectively.But for the higher latitude areas;the largest and smallest appear in February or March and August or September respectively.The total ozone present latitudinal relied on distribution pattern and increasing with latitude raised.From 10oN ~30oN,the increasing rate is less,while from 30 oN ~50oN,the increasing rate is boosty.There is a lower value area over Tibetan Plateau and extend to the lower latitude areas along Hengduan Mountains of China.The variation of total ozone distribution pattern also alterative along with different latitudes,the trend is that with the mean total ozone value increase with latitude raised.The variation of total ozone in 216 lower latitude stations are smaller,with alternation for mean value is 30 DU.There are big variation of total ozone value in 326 higher latitude stations,with alternation for mean value is up to 180 DU.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2011年第4期529-539,共11页
China Environmental Science
基金
国家“973”项目(2010CB428503)
国家自然科学基金资助项目(4067113)
科技部重大国际合作项目(2008DFA31810)
科技部重大基础性项目(2007FY110300-8)
关键词
臭氧总量
亚洲地区
卫星遥感
臭氧观测仪
扫描成像大气吸收光谱仪
total ozone
eastern Asia
satellite remote sensing
ozone monitoring instrument（OMI）
scanning imaging absorption spectrometer for atmospheric chartography（SCIAMACHY）
