| Download | - View final version: Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions (PDF, 6.1 MiB)
- View supplementary information: Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions (PDF, 1.4 MiB)
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| DOI | Resolve DOI: https://doi.org/10.5194/amt-18-471-2025 |
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| Author | Search for: Liu, LeiORCID identifier: https://orcid.org/0000-0003-2983-6656; Search for: Bliankinshtein, Natalia1ORCID identifier: https://orcid.org/0000-0001-5780-8500; Search for: Huang, YiORCID identifier: https://orcid.org/0000-0002-5065-4198; Search for: Gyakum, John R.; Search for: Gabriel, Philip M.; Search for: Xu, Shiqi1; Search for: Wolde, Mengistu1ORCID identifier: https://orcid.org/0000-0002-4823-3108 |
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| Affiliation | - National Research Council of Canada. Aerospace
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| Funder | Search for: Canadian Space Agency; Search for: Fonds de recherche du Québec – Nature et technologies; Search for: European Space Agency; Search for: Canada Foundation for Innovation |
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| Format | Text, Article |
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| Abstract | Accurate observations of atmospheric temperature and water vapor profiles are essential for weather forecasting and climate change detection. Hyperspectral radiance measurements afford a useful means to retrieve these thermodynamic variable fields by harnessing the rich information contained in the electromagnetic wave spectrum of the atmospheric radiation. In contrast to infrared radiometry, microwave radiometry can penetrate clouds, making it a valuable tool for all-sky thermodynamic retrievals. Recent advancements have led to the fabrication of a hyperspectral microwave radiometer: the High Spectral Resolution Airborne Microwave Sounder (HiSRAMS). This study utilizes HiSRAMS to retrieve atmospheric temperature and water vapor profiles under clear-sky conditions; this is an initial assessment of one of the first hyperspectral microwave radiometers, comparing the results to those from an infrared hyperspectrometer, the Atmospheric Emitted Radiance Interferometer (AERI). HiSRAMS and AERI measurements under different viewing geometries have been acquired and compared for atmospheric retrieval. When both instruments are placed on the ground to acquire zenith-pointing measurements, the infrared hyperspectral measurements exhibit higher information content and greater vertical resolution for temperature and water vapor retrievals than the microwave hyperspectral measurements. A synergistic fusion of HiSRAMS and AERI measurements from the air and ground is tested. This “sandwich” sounding of the atmosphere takes advantage of the complementary information contents of the two instruments and is found to notably improve retrieval accuracy. |
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| Publication date | 2025-01-27 |
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| Publisher | Copernicus Publications
Europeam Geoscoences Union |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | c3bde130-add8-44ae-86a7-272b16993da7 |
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| Record created | 2025-06-04 |
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| Record modified | 2025-06-04 |
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