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Mean European Carbon Sink Over 2010–2015 Estimated by Simultaneous Assimilation of Atmospheric CO2, Soil Moisture, and Vegetation Optical Depth

Scholze, M. LU ; Kaminski, T. ; Knorr, W. LU ; Voßbeck, M. ; Wu, M. LU ; Ferrazzoli, P. ; Kerr, Yann ; Mialon, A. ; Richaume, P. and Rodríguez-Fernández, N. , et al. (2019) In Geophysical Research Letters 46(23). p.13796-13796
Abstract

The northern land biosphere is believed to be the main global sink of CO2, but the contribution of Europe is uncertain. While bottom-up estimates and inverse atmospheric transport studies based on atmospheric CO2 observed in situ or from space by OCO-2 point to a moderate rate of uptake, some other inversions based on remotely sensed atmospheric CO2 from GOSAT/SCIAMACHY and biomass estimates from passive microwave satellite data point to a large sink of around 1 Gt C/yr. We present results from combining both approaches in a data assimilation framework, inverting a biosphere model against in situ atmospheric CO2 and passive microwave measurements. When assimilating all observations, we... (More)

The northern land biosphere is believed to be the main global sink of CO2, but the contribution of Europe is uncertain. While bottom-up estimates and inverse atmospheric transport studies based on atmospheric CO2 observed in situ or from space by OCO-2 point to a moderate rate of uptake, some other inversions based on remotely sensed atmospheric CO2 from GOSAT/SCIAMACHY and biomass estimates from passive microwave satellite data point to a large sink of around 1 Gt C/yr. We present results from combining both approaches in a data assimilation framework, inverting a biosphere model against in situ atmospheric CO2 and passive microwave measurements. When assimilating all observations, we estimate a European carbon sink of 0.303 ± 0.083 Gt C/yr for 2010–2015. The result agrees with other bottom-up studies and atmospheric inversions using in situ CO2 or OCO-2 observations pointing to potential data problems when using observations from GOSAT or SCIAMACHY to estimate the European CO2 sink.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
atmospheric CO concentration, carbon cycle data assimilation, European CO sink, SMOS soil moisture, SMOS VOD
in
Geophysical Research Letters
volume
46
issue
23
pages
13803 pages
publisher
American Geophysical Union (AGU)
external identifiers
  • scopus:85076094348
ISSN
0094-8276
DOI
10.1029/2019GL085725
language
English
LU publication?
yes
id
0903477c-3f6a-4dc4-b15f-8ac6d2c7b8cc
date added to LUP
2020-01-02 13:28:38
date last changed
2024-02-09 13:51:52
@article{0903477c-3f6a-4dc4-b15f-8ac6d2c7b8cc,
  abstract     = {{<p>The northern land biosphere is believed to be the main global sink of CO<sub>2</sub>, but the contribution of Europe is uncertain. While bottom-up estimates and inverse atmospheric transport studies based on atmospheric CO<sub>2</sub> observed in situ or from space by OCO-2 point to a moderate rate of uptake, some other inversions based on remotely sensed atmospheric CO<sub>2</sub> from GOSAT/SCIAMACHY and biomass estimates from passive microwave satellite data point to a large sink of around 1 Gt C/yr. We present results from combining both approaches in a data assimilation framework, inverting a biosphere model against in situ atmospheric CO<sub>2</sub> and passive microwave measurements. When assimilating all observations, we estimate a European carbon sink of 0.303 ± 0.083 Gt C/yr for 2010–2015. The result agrees with other bottom-up studies and atmospheric inversions using in situ CO<sub>2</sub> or OCO-2 observations pointing to potential data problems when using observations from GOSAT or SCIAMACHY to estimate the European CO<sub>2</sub> sink.</p>}},
  author       = {{Scholze, M. and Kaminski, T. and Knorr, W. and Voßbeck, M. and Wu, M. and Ferrazzoli, P. and Kerr, Yann and Mialon, A. and Richaume, P. and Rodríguez-Fernández, N. and Vittucci, C. and Wigneron, J. P. and Mecklenburg, S. and Drusch, M.}},
  issn         = {{0094-8276}},
  keywords     = {{atmospheric CO concentration; carbon cycle data assimilation; European CO sink; SMOS soil moisture; SMOS VOD}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{23}},
  pages        = {{13796--13796}},
  publisher    = {{American Geophysical Union (AGU)}},
  series       = {{Geophysical Research Letters}},
  title        = {{Mean European Carbon Sink Over 2010–2015 Estimated by Simultaneous Assimilation of Atmospheric CO<sub>2</sub>, Soil Moisture, and Vegetation Optical Depth}},
  url          = {{http://dx.doi.org/10.1029/2019GL085725}},
  doi          = {{10.1029/2019GL085725}},
  volume       = {{46}},
  year         = {{2019}},
}