Title :
A preliminary investigation of CO2 and CH4 concentration variations with the land use in Northern China by GOSAT
Author :
Lei, Liping ; Liu, Qing ; Zhang, Li ; Liu, Liangyun ; Zhang, Bing
Author_Institution :
Key Lab. of Digital Earth, Chinese Acad. of Sci., Beijing, China
Abstract :
It is not completely clear that the spatial change of the green house gases such as CO2 concentration, CH4 concentration and their changes with the land ecological variation because there are not enough observational data available. A preliminary result investigating the spatial distributions variation of CO2 and CH4 concentrations in China using observed data by The Greenhouse Gases Observing SATellite (GOSAT), were demonstrated. The 1-km grid landuse data and the CO2 dry air mixing ratios (XCO2) and CH4 dry air mixing ratios (XCH4) inversed from GOSAT FTS/SWIR data were used. The results showed that the total average of XCO2 is 371ppmv, XCH4 is 1.72ppmv based on statistics of the entire GOSAT observing points from April 2009 to March 2010 in China. XCO2 over the urban and built-up areas and farmlands showed larger concentrations than that over the forest and grasslands.
Keywords :
atmospheric chemistry; atmospheric techniques; carbon compounds; mixing; remote sensing; spatial variables measurement; vegetation; CO2; China; GOSAT FTS-SWIR data; dry air mixing ratios; farmlands; green house gases; greenhouse gases observing satellite; grid landuse data; land ecological variation; methane concentration; spatial distributions variation; urban area; Decision support systems; CH4 dry air mixing ratios; CO2 dry air mixing ratios; China; GOSAT;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5653471
