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  The constraint of CO2 measurements made onboard passenger aircraft on surface–atmosphere fluxes: the impact of transport model errors in vertical mixing

Verma, S., Marshall, J., Gerbig, C., Rödenbeck, C., & Totsche, K. U. (2017). The constraint of CO2 measurements made onboard passenger aircraft on surface–atmosphere fluxes: the impact of transport model errors in vertical mixing. Atmospheric Chemistry and Physics, 17(9), 5665-5675. doi:10.5194/acp-17-5665-2017.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-416D-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-341A-E
Genre: Journal Article

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http://dx.doi.org/10.5194/acp-17-5665-2017 (Publisher version)
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 Creators:
Verma, Shreeya1, 2, Author              
Marshall, Julia2, Author              
Gerbig, Christoph3, Author              
Rödenbeck, Christian4, Author              
Totsche, Kai Uwe, Author
Affiliations:
1IMPRS International Max Planck Research School for Global Biogeochemical Cycles, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497757              
2Satellite-based Remote Sensing of Greenhouse Gases, Dr. J. Marshall, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497789              
3Airborne Trace Gas Measurements and Mesoscale Modelling, Dr. habil. C. Gerbig, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497784              
4Inverse Data-driven Estimation, Dr. C. Rödenbeck, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497785              

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 Abstract: Inaccurate representation of atmospheric processes by transport models is a dominant source of uncertainty in inverse analyses and can lead to large discrepancies in the retrieved flux estimates. We investigate the impact of uncertainties in vertical transport as simulated by atmospheric transport models on fluxes retrieved using vertical profiles from aircraft as an observational constraint. Our numerical experiments are based on synthetic data with realistic spatial and temporal sampling of aircraft measurements. The impact of such uncertainties on the flux retrieved using the ground-based network with those retrieved using the aircraft profiles are compared. We find that the posterior flux retrieved using aircraft profiles is less susceptible to errors in boundary layer height as compared to the ground- based network. This highlights the benefit of utilizing atmospheric observations made onboard aircraft over surface measurements for flux estimation using inverse methods. We further use synthetic vertical profiles of CO2 in an inversion to estimate the potential of these measurements, which will be made available through the IAGOS (In-Service Aircraft for a Global Observing System) project in future, in constraining the regional carbon budget. Our results show that the regions tropical Africa and temperate Eurasia, that are under constrained by the existing surface based network, will benefit the most from these measurements, the reduction of posterior flux uncertainty being about 7 to 10 %.

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 Dates: 2017-03-092017-05-05
 Publication Status: Published online
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 Identifiers: Other: BGC2504
DOI: 10.5194/acp-17-5665-2017
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Title: Atmospheric Chemistry and Physics
Source Genre: Journal
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Publ. Info: Katlenburg-Lindau, Germany : European Geosciences Union
Pages: - Volume / Issue: 17 (9) Sequence Number: - Start / End Page: 5665 - 5675 Identifier: ISSN: 1680-7316
CoNE: /journals/resource/111030403014016