| 我国对流层二氧化碳非均匀动态分布特征及其成因 |
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| 引用本文： | 符传博,丹利,冯锦明,彭静,营娜.我国对流层二氧化碳非均匀动态分布特征及其成因[J].地球物理学报,2018,61(11):4373-4382. |
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| 作者姓名： | 符传博 丹利 冯锦明 彭静 营娜 |
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| 作者单位： | 1. 中国科学院东亚区域气候-环境重点实验室, 中国科学院大气物理研究所, 北京 100029;2. 海南省气象台, 海口 570203;3. 北京师范大学, 地表过程与资源生态国家重点实验室, 北京 100875 |
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| 基金项目： | 国家重点研发计划课题"全球CO2非均匀动态分布与地表温度时空关系研究"（2016YFA0602501）；国家自然科学基金项目（41630532，41575093）资助. |
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| 摘 要： | 人类活动导致大气中温室气体浓度上升，是全球气候变暖的主要原因之一.本文针对已经连续运行13年的AIRS（Atmospheric Infrared Sounder）卫星反演的对流层中层CO2浓度资料，利用地基观测结果对其进行验证，同时结合多种相关资料对我国区域CO2浓度的时空分布及季节变化进行研究.结果显示：北半球30°N—60°N是CO2浓度高值带，低值中心主要出现在15°S—15°N，140°W向东至100°E的低纬地区.地基观测与AIRS卫星反演结果基本一致，年增长率约为1.926 ppmv·a-1.我国区域CO2浓度空间分布上呈现北高南低的非均匀分布特征，4个高值中心分别位于东北地区西南部、内蒙古西部、新疆地区东部和西部，低值中心在云南和西藏地区.我国区域CO2浓度有明显的季节变化特征，最高值出现在春季，冬夏季次之，秋季最低，其季节演变特点与风场的输送、降水量的清除和植被的吸收等密切相关.
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| 关 键 词： | CO2 卫星遥感 非均匀分布 季节变化 中国区域 |
| 收稿时间： | 2017-08-14 |
Temporal and spatial heterogeneous distribution of tropospheric CO2 over China and its possible genesis |
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| FU ChuanBo,DAN Li,FENG JinMing,PENG Jing,YING Na.Temporal and spatial heterogeneous distribution of tropospheric CO2 over China and its possible genesis[J].Chinese Journal of Geophysics,2018,61(11):4373-4382. |
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| Authors: | FU ChuanBo DAN Li FENG JinMing PENG Jing YING Na |
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| Affiliation: | 1. Institute of Atmospheric Physics, Chinese Academy of Sciences, Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Beijing 100029, China;2. Hainan Meteorological Observatory, Haikou 570203, China;3. Beijing Normal University, State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing 100875, China |
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| Abstract: | Increase of greenhouse gas generated by human activities is one of the primary causes for global warming. Mid-troposphere CO2 data retrieved by AIRS (atmospheric infrared sounder), which had been running for 13 years, were validated with ground-based stations observations in this study. Then the spatial and temporal distribution and seasonal variations of CO2 concentration in China were studied with a variety of related data. The results show that there was a high CO2 concentration zone between 30° to 60° over the northern hemisphere, and a low concentration center over low latitudes from 15° S to 15°N, 140°W eastward to 100°E. AIRS CO2 products show good agreement with ground observations, with a 1.926 ppmv·a-1 annual growth rate. Concentration of mid-troposphere CO2 was higher over northern China than over southern China, and there were four centers of high concentration located in the southwest of Northeast China, west Inner Mongolia, east and west Xinjiang, and low concentrations over Yunnan and the Tibetan area. There existed a significant seasonal CO2 variation with peak in spring, followed by winter and summer, and the lowest concentration occurs in autumn. The seasonal evolution of CO2 is closely related to the transport of the wind field, removal of precipitation and absorption of vegetation. |
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| Keywords: | CO2 Satellite remote sensing Heterogeneous distribution Seasonal variation China |
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