我国中部地区大气CO_2柱浓度时空分布  

Spatial and temporal distribution characteristics of atmospheric CO_2 in central China

作　　者：夏玲君 刘立新[2] 李柏贞 周凌晞[3] XIA Ling-jun;LIU Li-xin;LI Bo-zhen;ZHOU Ling-xi(Jiangxi Ecological Meteorology Center,Nanchang 330096,China;Meteorological Observation Center of China Meteorological Administration,Beijing 100081,China;Chinese Academy of Meteorological Sciences,Beijing 100081,China)

机构地区：[1]江西省生态气象中心,江西南昌330096 [2]中国气象局气象探测中心,北京100081 [3]中国气象科学研究院,北京100081

出　　处：《中国环境科学》2018年第8期2811-2819,共9页China Environmental Science

基　　金：国家国际科技合作专项(2015DFG21960);中国清洁发展机制基金赠款项目(2014102);国家自然科学基金资助项目(41775127);江西省气象科技面上项目

摘　　要：基于日本GOSAT及美国AIRS反演数据产品,对我国中部六省大气CO_2时空分布特征进行研究,结果表明:由GOSAT反演的中部地区2010～2013年大气CO_2年均柱浓度由389.36×10^(-6)增长到396.52×10^(-6),年均绝对增长率达2.39×10^(-6)/a,呈现出冬春季高值、夏秋季低值的季节变化特征,其柱浓度年均值及去长期趋势后的月均值均略低于长三角地区,高于京津冀和东三省地区;其CO_2柱浓度高值区集中在湖南、江西及周边一带,年均绝对增长率为2.01×10^(-6),其柱浓度年均值及去长期趋势后的月均值与长三角地区相当,略低于京津冀和东三省地区,由于受地面源汇影响较小,其与GOSAT反演结果相反,可能是由于AIRS反映了对流层中层大气状况,而GOSAT则更多地反映了近地面层大气CO_2变化.Based on retrieved CO2 products of GOSAT and AIRS, the spatial and temporal distribution characteristics of CO2 in central areas of China were analyzed. The annual CO2 retrieved from GOSAT range from 389.36×10^-6 in 2010 to 396.52×10^-6 in 2013, with a growth rate of 2.39×10^-6 per year. The annual mean in central areas of China were slightly lower than Yangze River Delta（YZD）, but higher than Jing-Jin-Ji area（JJJ） and Northeastern China region（NCR）. The CO2 in Hunan and Jiangxi province was with the highest values, and it was with the lowest values over north areas of Shanxi province. The annual CO2 retrieved from AIRS varied from 390.48×10^-6 in 2010 to 396.50×10^-6 in 2013, with a growth rate of 2.01×10^-6 per year, and the annual mean CO2 were similar with YZD, while slightly lower than JJJ and NCR. Due to small impact from ground sources and sinks, the CO2 seasonal amplitude retrieved from AIRS was smaller than that of GOSAT. On the contrary, high-value regions of CO2 from AIRS mainly distributed over Henan and Shanxi, and the low-value regions presented in Hunan and Jiangxi, which was likely due to that GOSAT and AIRS products represented CO2 variations over different height.

关 键 词：CO2柱浓度 中部地区 时空分布特征 GOSAT AIRS 

分 类 号：X511[环境科学与工程—环境工程]