Spectral sizing of a coarse-spectral-resolution satellite sensor for XCO2
<p><strong>Abstract.</strong> Verifying anthropogenic carbon dioxide (<span class="inline-formula">CO<sub>2</sub></span>) emissions globally is essential to inform about the progress of institutional efforts to mitigate anthropogenic climate forcin...
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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
13 February 2020
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| In: |
Atmospheric measurement techniques
Year: 2020, Volume: 13, Issue: 2, Pages: 731-745 |
| ISSN: | 1867-8548 |
| DOI: | 10.5194/amt-13-731-2020 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.5194/amt-13-731-2020 Verlag, lizenzpflichtig, Volltext: https://www.atmos-meas-tech.net/13/731/2020/ 
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| Author Notes: | Jonas Simon Wilzewski, Anke Roiger, Johan Strandgren, Jochen Landgraf, Dietrich G. Feist, Voltaire A. Velazco, Nicholas M. Deutscher, Isamu Morino, Hirofumi Ohyama, Yao Té, Rigel Kivi, Thorsten Warneke, Justus Notholt, Manvendra Dubey, Ralf Sussmann, Markus Rettinger, Frank Hase, Kei Shiomi, and André Butz |
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| 245 | 1 | 0 | |a Spectral sizing of a coarse-spectral-resolution satellite sensor for XCO2 |c Jonas Simon Wilzewski, Anke Roiger, Johan Strandgren, Jochen Landgraf, Dietrich G. Feist, Voltaire A. Velazco, Nicholas M. Deutscher, Isamu Morino, Hirofumi Ohyama, Yao Té, Rigel Kivi, Thorsten Warneke, Justus Notholt, Manvendra Dubey, Ralf Sussmann, Markus Rettinger, Frank Hase, Kei Shiomi, and André Butz |
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| 520 | |a <p><strong>Abstract.</strong> Verifying anthropogenic carbon dioxide (<span class="inline-formula">CO<sub>2</sub></span>) emissions globally is essential to inform about the progress of institutional efforts to mitigate anthropogenic climate forcing. To monitor localized emission sources, spectroscopic satellite sensors have been proposed that operate on the <span class="inline-formula">CO<sub>2</sub></span> absorption bands in the shortwave-infrared (SWIR) spectral range with ground resolution as fine as a few tens of meters to about a hundred meters. When designing such sensors, fine ground resolution requires a trade-off towards coarse spectral resolution in order to achieve sufficient noise performance. Since fine ground resolution also implies limited ground coverage, such sensors are envisioned to fly in fleets of satellites, requiring low-cost and simple design, e.g., by restricting the spectrometer to a single spectral band.</p> <p>Here, we use measurements of the Greenhouse Gases Observing Satellite (GOSAT) to evaluate the spectral resolution and spectral band selection of a prospective satellite sensor with fine ground resolution. To this end, we degrade GOSAT SWIR spectra of the <span class="inline-formula">CO<sub>2</sub></span> bands at 1.6 (SWIR-1) and 2.0 <span class="inline-formula">µ</span>m (SWIR-2) to coarse spectral resolution, without a further addition of noise, and we evaluate single-band retrievals of the column-averaged dry-air mole fractions of <span class="inline-formula">CO<sub>2</sub></span> (<span class="inline-formula">XCO<sub>2</sub></span>) by comparison to ground truth provided by the Total Carbon Column Observing Network (TCCON) and by comparison to global “native” GOSAT retrievals with native spectral resolution and spectral band selection. | ||
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| 700 | 1 | |a Shiomi, Kei |e VerfasserIn |4 aut | |
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