Complementing XCO 2 imagery with ground-based CO 2 and 14 CO 2 measurements to monitor CO 2 emissions from fossil fuels on a regional to local scale
In: Atmospheric Measurement Techniques, Vol 15, Pp 5261-5288 (2022, 2022
Online
academicJournal
Zugriff:
Various satellite imagers of the vertically integrated column of carbon dioxide ( XCO 2 ) are under development to enhance the capabilities for the monitoring of fossil fuel (FF) CO 2 emissions. XCO 2 images can be used to detect plumes from cities and large industrial plants and to quantify the corresponding emission using atmospheric inversions techniques. However, this potential and the ability to catch the signal from more diffuse FF CO 2 sources can be hampered by the mix between these FF signals and a background signal from other types of CO 2 surface fluxes, and in particular of biogenic CO 2 fluxes. The deployment of dense ground-based air-sampling networks for CO 2 and radiocarbon ( 14 CO 2 ) could complement the spaceborne imagery by supporting the separation between the fossil fuel and biogenic or biofuel (BF) CO 2 signals. We evaluate this potential complementarity with a high-resolution analytical inversion system focused on northern France, western Germany, Belgium, Luxembourg, and a part of the Netherlands and with pseudo-data experiments. The inversion system controls the FF and BF emissions from the large urban areas and plants, in addition to regional budgets of more diffuse emissions or of biogenic fluxes (NEE, net ecosystem exchange), at an hourly scale over a whole day. The system provides results corresponding to the assimilation of pseudo-data from a single track of a 300 km swath XCO 2 imager at 2 km resolution and from surface ground-based CO 2 and/or 14 CO 2 networks. It represents the diversity of 14 CO 2 sources and sinks and not just the dilution of radiocarbon-free FF CO 2 emissions. The uncertainty in the resulting FF CO 2 emissions at local (urban area/plant) to regional scales is directly derived and used to assess the potential of the different combinations of observation systems. The assimilation of satellite observations yields estimates of the morning regional emissions with an uncertainty down to 10 % (1 σ ) in the satellite field of view, from an assumed uncertainty of 15 % ...
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Complementing XCO 2 imagery with ground-based CO 2 and 14 CO 2 measurements to monitor CO 2 emissions from fossil fuels on a regional to local scale
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Autor/in / Beteiligte Person: | Potier, E. ; Broquet, G. ; Wang, Y. ; Santaren, D. ; Berchet, A. ; Pison, I. ; Marshall, J. ; Ciais, P. ; Bréon, F.-M. ; Chevallier, F. |
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Zeitschrift: | Atmospheric Measurement Techniques, Vol 15, Pp 5261-5288 (2022, 2022 |
Veröffentlichung: | Copernicus Publications, 2022 |
Medientyp: | academicJournal |
ISSN: | 1867-1381 (print) ; 1867-8548 (print) |
DOI: | 10.5194/amt-15-5261-2022 |
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