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  2D data fusion of CAIRT, IASI-NG and Sentinel 5 to better resolve processes occurring in the troposphere and lower stratosphere

Tirelli, C., Ceccherini, S., Cortesi, U., Del Bianco, S., Errera, Q., Funke, B., Höpfner, M., Kujanpää, J., Poli, G., Preusse, P., Raspollini, P., Sinnhuber, B.-M., Ungermann, J. (2023): 2D data fusion of CAIRT, IASI-NG and Sentinel 5 to better resolve processes occurring in the troposphere and lower stratosphere, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4334

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021768 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021768_1
Genre: Conference Paper

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 Creators:
Tirelli, Cecilia1, Author
Ceccherini, Simone1, Author
Cortesi, Ugo1, Author
Del Bianco, Samuele1, Author
Errera, Quentin1, Author
Funke, Bernd1, Author
Höpfner, Michael1, Author
Kujanpää, Jukka1, Author
Poli, Gabriele1, Author
Preusse, Peter1, Author
Raspollini, Piera1, Author
Sinnhuber, Björn-Martin1, Author
Ungermann, Jörn1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: The Changing-Atmosphere Infra-Red Tomography Explorer (CAIRT) is one of the four candidates for ESA’s Earth Explorer 11, aimed to study the coupling between atmospheric composition, circulation and climate. By exploiting its imaging capabilities, CAIRT indeed can sound the atmosphere simultaneously from the middle troposphere to the lower thermosphere at 0.2 cm-1 spectral resolution and with horizontal sampling of 50 km along track, 50 km across track and vertical sampling of 1 km. Flying in loose formation with MetOp-SG mission allows to combine spatially resolved limb observations with horizontally resolved nadir measurements of IASI-NG and Sentinel-5 nadir spectrometers to extend limb observations down to the surface. An accurate knowledge of trace gas composition around the tropopause is particularly important to reduce significant uncertainties in projected future warming: changes in the surface air pollution and in the stratosphere-troposphere exchange may significantly affect it. Moreover quantifying the influence of stratospheric transport on near-surface tropospheric composition is important since it conditions attempts to derive emission fluxes from surface observations for important greenhouse gases. We evaluated advantages coming from the exploitation of the synergy between realistic simulations of CAIRT, IASI-NG and Sentinel 5 observations applying the rigorous approach of the two-dimensional complete data fusion. The synergistic products demonstrate a better quality in sounding both the troposphere and the Upper Troposphere - Lower Stratosphere region. Results will be shown for selected case studies involving ozone, methane and other pollutants.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4334
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -