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Information about regional carbon sources and sinks can be derived from variations in observed atmospheric CO2 concentrations via inverse modelling with atmospheric tracer transport models. A consensus has not yet been reached regarding the size and distribution of regional carbon fluxes obtained using this approach, partly owing to the use of several(More)
  • A Z Shvidenko, E Gustafson, A D Mcguire, V I Kharuk, bullet N M Tchebakova, A A Onuchin +23 others
  • 2012
This chapter considers the current state of Siberian terrestrial ecosystems, their spatial distribution, and major biometric characteristics. Ongoing climate change and the dramatic increase of accompanying anthropogenic pressure provide different but mostly negative impacts on Siberian ecosystems. Future climates of the region may lead to substantial(More)
This is a preliminary PDF of the author-produced manuscript that has been peer-reviewed and accepted for publication. Since it is being posted so soon after acceptance, it has not yet been copyedited, formatted, or processed by AMS Publications. This preliminary version of the manuscript may be downloaded, distributed, and cited, but please be aware that(More)
The Amazon is a significant source of atmospheric methane, but little is known about the source response to increasing drought severity and frequency. We investigated satellite observations of atmospheric column-averaged methane for the 2010 drought and subsequent 2011 wet year in the Amazon using an atmospheric inversion scheme. Our analysis indicates an(More)
17 Chapter 1 Earth Science We have used the CCSR/NIES/FRCGC atmospheric general circulation model (AGCM) based transport model for simulations of greenhouse gases (GHGs), e.g., CO 2 , N 2 O, SF 6 , and a transport diagnostic tracer 222 Radon (half-life 3.8 days). These simulations are now being analyzed comparing with observations and preparing strategies(More)
We have incorporated a semi-mechanistic fire model into the SEVER Dynamic Global Vegetation Model (DGVM). The model produces estimates of net primary productivity (NPP), heterotrophic respiration (HR) and fire carbon emission (FE) for the globe. This model was run for the period 1957-2002 with the NCEP climate reanalysis data as an input. Results were(More)
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