How Much CO2 Is Taken Up by the European Terrestrial Biosphere?

被引:28
|
作者
Reuter, M. [1 ]
Buchwitz, M. [1 ]
Hilker, M. [1 ]
Heymann, J. [1 ]
Bovensmann, H. [1 ]
Burrrrows, J. P. [1 ]
Houweling, S. [2 ]
Liu, Y. Y. [3 ,4 ]
Nassar, R. [5 ]
Chevallier, F. [6 ]
Ciais, P. [6 ]
Marshall, J. [7 ]
Reichstein, M. [7 ]
机构
[1] Univ Bremen, Inst Environm Phys, Bremen, Germany
[2] SRON Netherlands Inst Space Res, Utrecht, Netherlands
[3] Univ New South Wales, ARC Ctr Excellence Climate Syst Sci, Sydney, NSW, Australia
[4] Univ New South Wales, Climate Change Res Ctr, Sydney, NSW, Australia
[5] Environm & Climate Change Canada, Climate Res Div, Toronto, ON, Canada
[6] Lab Sci Climat & Environm, Gif Sur Yvette, France
[7] Max Planck Inst Biogeochem, Jena, Germany
关键词
ATMOSPHERIC CO2; CARBON; SATELLITE; GOSAT; RETRIEVALS; SCIAMACHY; SINKS; SPECTROMETER; INVERSIONS; EMISSIONS;
D O I
10.1175/BAMS-D-15-00310.1
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
The conventional and established estimates of the amount of carbon taken up by the European terrestrial biosphere from the Atlantic to the Urals rely on two conceptually different types of ground-based measurements. On the one hand, in situ measurements of atmospheric CO2 concentrations are globally obtained at about 100 sites on a regular basis. On the other hand, conventional bottom-up estimates of surface carbon fluxes are obtained from field measurements. Additional in situ measurement sites are needed to better constrain the surface fluxes of the northeastern part of Europe with inverse models, where the strongest uptake is expected. Field campaigns in this region, including flux and biomass measurements, can contribute to bottom-up estimates and serve as an additional anchor point for ABC satellite measurements. Regularly updated inventories and land cover classification are also essential for reliable bottom-up estimates. Likewise, reliable estimates of the flux uncertainties from bottom-up methods that should include all kinds of upscaling uncertainties and propagated measurement errors are essential. In addition to the continuation of existing satellite missions, new satellite missions are needed to provide denser and more accurate and precise measurements of the atmospheric CO2 concentration.
引用
收藏
页码:665 / 671
页数:7
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