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- Title
The covariation of Northern Hemisphere summertime CO<sub>2</sub> with surface temperature at boreal latitudes.
- Authors
Wunch, D.; Wennberg, P. O.; Messerschmidt, J.; Parazoo, N.; Toon, G. C.; Deutscher, N. M.; Keppel-Aleks, G.; Roehl, C. M.; Randerson, J. T.; Warneke, T.; Notholt, J.
- Abstract
We observe significant interannual variability in the strength of the seasonal cycle draw-down in northern midlatitudes from measurements of CO2 made by the Total Carbon Column Observing Network (TCCON) and the Greenhouse Gases Observing Satellite (GOSAT). This variability correlates with surface temperature in the real latitudes. The TCCON measurements give an average covariation between the XCO2 seasonal cycle minima and boreal surface temperature of 1.3±0.7 ppm K-1. Assimilations from CarbonTracker 2011 and CO2 simulations using the Simple Biosphere exchange Model (SiB) transported by GEOS-Chem underestimate this covariation. Both atmospheric transport and biospheric activity contribute to the observed covariation.
- Subjects
NORTHERN Hemisphere; ATMOSPHERIC carbon dioxide; ANALYSIS of variance; SUMMER; SURFACE temperature; LATITUDE; BIOSPHERE; ATMOSPHERIC transport
- Publication
Atmospheric Chemistry & Physics Discussions, 2013, Vol 13, Issue 4, p10263
- ISSN
1680-7367
- Publication type
Article
- DOI
10.5194/acpd-13-10263-2013