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

fYear

2010

fDate

25-30 July 2010

Firstpage

1141

Lastpage

1144

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International

Conference_Location

Honolulu, HI

ISSN

2153-6996

Print_ISBN

978-1-4244-9565-8

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2010.5653471

Filename

5653471