DOI: 10.1002/jgrd.50127
论文题名: Carbon flux estimation for siberia by inverse modeling constrained by aircraft and tower co2 measurements
作者: Saeki T. ; Maksyutov S. ; Sasakawa M. ; Machida T. ; Arshinov M. ; Tans P. ; Conway T.J. ; Saito M. ; Valsala V. ; Oda T. ; Andres R.J. ; Belikov D.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 2 起始页码: 1100
结束页码: 1122
语种: 英语
Scopus关键词: Carbon
; Inverse problems
; Carbon reservoirs
; Forward simulation
; Independent measurement
; Interannual variability
; Inversion results
; National Oceanic and Atmospheric Administration
; Observation networks
; Uncertainty reduction
; Carbon dioxide
; aircraft
; annual variation
; carbon dioxide
; carbon flux
; estimation method
; flux measurement
; measurement method
; NOAA satellite
; numerical model
; satellite data
; Siberia
英文摘要: Being one of the largest carbon reservoirs in the world, the Siberian carbon sink however remains poorly understood due to the limited numbers of observation. We present the first results of atmospheric CO2 inversions utilizing measurements from a Siberian tower network (Japan-Russia Siberian Tall Tower Inland Observation Network; JR-STATION) and four aircraft sites, in addition to surface background flask measurements by the National Oceanic and Atmospheric Administration (NOAA). Our inversion with only the NOAA data yielded a boreal Eurasian CO2 flux of -0.56±0.79 GtC yr-1, whereas we obtained a weaker uptake of -0.35±0.61 GtC yr-1 when the Siberian data were also included. This difference is mainly explained by a weakened summer uptake, especially in East Siberia. We also found the inclusion of the Siberian data had significant impacts on inversion results over northeastern Europe as well as boreal Eurasia. The inversion with the Siberian data reduced the regional uncertainty by 22% on average in boreal Eurasia, and further uncertainty reductions up to 80% were found in eastern and western Siberia. Larger interannual variability was clearly seen in the inversion which includes the Siberia data than the inversion without the Siberia data. In the inversion with NOAA plus Siberia data, east Siberia showed a larger interannual variability than that in west and central Siberia. Finally, we conducted forward simulations using estimated fluxes and confirmed that the fit to independent measurements over central Siberia, which were not included in inversions, was greatly improved. © 2012. American Geophysical Union. 资助项目: DE-AC05-00OR22725
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64037
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba, Japan; V. E. Zuev Institute of Atmospheric Optics of Siberian Branch, Russian Academy of Sciences, Tomsk, Russian Federation; NOAA Earth System Research Laboratory, Boulder, CO, United States; Laboratoire des Sciences Du Climat et de L'Environnement, Gif sur Yvette, France; Indian Institute of Tropical Meteorology, Pune, India; Cooperative Institute for Research in Atmosphere, Colorado State University, Fort Collins, CO, United States; Oak Ridge National Laboratory, Oak Ridge, TN, United States
Recommended Citation:
Saeki T.,Maksyutov S.,Sasakawa M.,et al. Carbon flux estimation for siberia by inverse modeling constrained by aircraft and tower co2 measurements[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(2)