Ground-Based Atmospheric CO_(2),CH_(4),and CO Column Measurements at Golmud in the Qinghai-Tibetan Plateau and Comparisons with TROPOMI/S5P Satellite Observations  

作　　者：Minqiang ZHOU Qichen NI Zhaonan CAI Bavo LANGEROCK Jingyi JIANG Ke CHE Jiaxin WANG Weidong NAN Yi LIU Pucai WANG 

机构地区：[1]Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Royal Belgian Institute for Space Aeronomy(BIRA-IASB),Brussels 1180,Belgium [4]The College of Forestry,Beijing Forest University,Beijing 100091,China [5]Xianghe Observatory of Whole Atmosphere,Institute of Atmospheric Physics,Chinese Academy of Sciences,Langfang 065499,China

出　　处：《Advances in Atmospheric Sciences》2023年第2期223-234,共12页大气科学进展（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.42205140,41975035);the National Key Research and Development Program of China(2021YFB3901000).

摘　　要：Measurements of carbon dioxide(CO_(2)),methane(CH_(4)),and carbon monoxide(CO)are of great importance in the Qinghai-Tibetan region,as it is the highest and largest plateau in the world affecting global weather and climate systems.In this study,for the first time,we present CO_(2),CH_(4),and CO column measurements carried out by a Bruker EM27/SUN Fourier-transform infrared spectrometer(FTIR)at Golmud(36.42°E,94.91°N,2808 m)in August 2021.The mean and standard deviation of the column-average dry-air mixing ratio of CO_(2),CH_(4),and CO(XCO_(2),XCH_(4),and XCO)are 409.3±0.4 ppm,1905.5±19.4 ppb,and 103.1±7.7 ppb,respectively.The differences between the FTIR co-located TROPOMI/S5P satellite measurements at Golmud are 0.68±0.64%(13.1±12.2 ppb)for XCH_(4) and 9.81±3.48%(–10.7±3.8 ppb)for XCO,which are within their retrieval uncertainties.High correlations for both XCH_(4) and XCO are observed between the FTIR and S5P satellite measurements.Using the FLEXPART model and satellite measurements,we find that enhanced CH_(4) and CO columns in Golmud are affected by anthropogenic emissions transported from North India.This study provides an insight into the variations of the CO_(2),CH_(4),and CO columns in the Qinghai-Tibetan Plateau.

关 键 词：Ground-based FTIR greenhouse gas remote sensing TROPOMI/S5P Qinghai-Tibetan Plateau 

分 类 号：X831[环境科学与工程—环境工程]