Temporal and spatial characteristics of atmospheric methane in the Yangtze River basin and the analysis of the main environmental impact factors

Hongxiu Wan; Zhihao Qin; Yuanbo Liu; Yongming Xu; Xiuying Zhang

doi:10.1117/12.864907

14 October 2010 Temporal and spatial characteristics of atmospheric methane in the Yangtze River basin and the analysis of the main environmental impact factors

Hongxiu Wan, Zhihao Qin, Yuanbo Liu, Yongming Xu, Xiuying Zhang

Author Affiliations +

Proceedings Volume 7827, Remote Sensing of Clouds and the Atmosphere XV; 782711 (2010) https://doi.org/10.1117/12.864907
Event: SPIE Remote Sensing, 2010, Toulouse, France

Abstract

Methane (CH4), a significant atmospheric trace-gas, controls numerous chemical processes and species in the troposphere and stratosphere and is also a strong greenhouse gas with significantly adverse environmental impacts. Since the SCIAMACHY on the Envisat was in orbit since 2002, CH4 measurements at a regional scale became available. This study (1) firstly improved the spatial resolution of 0.5°×0.5° lat/lon grid data provided by University of Bremen IUP/IFE SCIAMACHY near-infrared nadir measurements using the scientific retrieval algorithm WFM-DOAS to 0.1°×0.1° lat/lon with the ordinary Kriging method, (2) then analyzed the spatial-temporal characteristics of atmospheric CH4 concentration in the Yangtze River basin (YRB), China from 2003 to 2005, (3) finally analyzed the relations with the main environmental factors: the precipitation from GSMaP MVK+ 0.1x 0.1 lat/lon degree grid data and the temperature from 147 meteorological stations in the YRB. The analysis shows that atmospheric methane concentration has significant and obvious characteristics of the spatial distribution of the inter-annual cycle fluctuations and seasonal characteristics during the year, and points out that the temperature is the main impact factor.

Citation Download Citation

Hongxiu Wan, Zhihao Qin, Yuanbo Liu, Yongming Xu, and Xiuying Zhang "Temporal and spatial characteristics of atmospheric methane in the Yangtze River basin and the analysis of the main environmental impact factors", Proc. SPIE 7827, Remote Sensing of Clouds and the Atmosphere XV, 782711 (14 October 2010); https://doi.org/10.1117/12.864907

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