青藏高原大气CH4源汇及其浓度时空变化特征研究进展

王逸凡, 高晶, 胡迈, 姚檀栋, 牛晓伟, 赵爱斌, 申子恒

The source and sink of atmospheric methane and spatial-temporal variation of its concentration on the Qinghai-Tibet Plateau

Yifan WANG, Jing GAO, Mai HU, Tandong YAO, Xiaowei NIU, Aibin ZHAO, Ziheng SHEN

图3 基于地面观测和卫星遥感的CH4浓度增长率 注：地区500 hPa高度2011—2020年CH4浓度年均增长率插值瓦里关站CH4浓度月均数据下载自世界温室气体数据中心（https：//gaw.kishou.go.jp/），AIRS第七版三级标准产品的CH4月均浓度网格数据下载自美国宇航局地球科学数据和信息服务中心（https：//disc.gsfc.nasa.gov/）。

Fig. 3 The growth rate of CH4 concentration from ground observation and remote sensing ［Annual average concentration and linear regression of CH4 at Waliguan station from 2011 to 2020 （a）； Interpolation of annual average growth rate of CH4 concentration at 500 hPa height in East Asia retrieved by AIRS from 2011 to 2020 （b）］ Note：The monthly average CH4 concentration data of Waliguan station is downloaded from the world greenhouse gas data center（https：//gaw.kishou.go.jp/），the monthly average CH4 concentration grid data of the AIRS L3 V7.0 standard products is downloaded from NASA geoscience data and Information Service Center（https：//disc.gsfc.nasa.gov/）.