GOSAT CH4 and CO2, MODIS Evapotranspiration on the Northern Hemisphere June and July 2009, 2010 and 2011Report as inadecuate




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The Greenhouse gases Observing Satellite GOSAT affords an abilityto assess and monitor CH4 and CO2 near-surfaceatmospheric concentrations globally on monthly scales pertaining tobiogeochemical cycles and anthropogenic emissions. In addition to GOSAT ourinvestigation incorporates global-monthly estimates of evapotranspiration ETfrom the Moderate Resolution Spectroradiometer MODIS and fire-wildfirelocations for correspondence and comparison. We restrict the investigation tothe months of June and July in years 2009, 2010 and 2011. After processing andassessment on the northern hemisphere we focus on two regions in Eurasia for interrogation: 40? to 80?E by 50? to 58?N and100? to 140?E by 50? to 58?N. The regions allow for contrasting regionalsettings, an agricultural-industrial-urban west-region to a boreal-steppediscontinuous permafrost zone palsa and thaw lake east-region. Jointprobability density functions allow us to identify significant modes, thehighest probable values of background levels of CH4 and CO2 to ET and develop regressions for correlated relationships. We found thatbackground levels of CH4, CO2 and ET were not affected bythe wildfires of 2010. Regressions indicate significant inverse relationshipsof CH4 and CO2 to ET in the west-region and nosignificant relationships in the east-region. The east-region showssignificantly higher background levels of CH4, CO2 and ETowing to the heterogeneity of ecosystems, hydrology, physical processes andterrain in the discontinuous permafrost zone of the central Siberian Plateau.



KEYWORDS

GOSAT; CH4 ; CO2; MODIS; Evapotranspiration; Wildfire

Cite this paper

R. Muskett -GOSAT CH4 and CO2, MODIS Evapotranspiration on the Northern Hemisphere June and July 2009, 2010 and 2011,- Atmospheric and Climate Sciences, Vol. 3 No. 2, 2013, pp. 177-185. doi: 10.4236-acs.2013.32019.





Author: Reginald R. Muskett

Source: http://www.scirp.org/



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