Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions
<p>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 containe...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2025-01-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/18/471/2025/amt-18-471-2025.pdf |
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| author | L. Liu N. Bliankinshtein Y. Huang J. R. Gyakum P. M. Gabriel S. Xu M. Wolde |
| author_facet | L. Liu N. Bliankinshtein Y. Huang J. R. Gyakum P. M. Gabriel S. Xu M. Wolde |
| author_sort | L. Liu |
| collection | DOAJ |
| description | <p>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.</p> |
| format | Article |
| id | doaj-art-96652cf5a42f4ca09792c35f8f09e9b1 |
| institution | Kabale University |
| issn | 1867-1381 1867-8548 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj-art-96652cf5a42f4ca09792c35f8f09e9b12025-01-27T09:11:11ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482025-01-011847148510.5194/amt-18-471-2025Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditionsL. Liu0N. Bliankinshtein1Y. Huang2J. R. Gyakum3P. M. Gabriel4S. Xu5M. Wolde6Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, CanadaFlight Research Laboratory, National Research Council Canada, Ottawa, Ontario, CanadaDepartment of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, CanadaDepartment of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, CanadaHorizon Science and Technology, Wolfville, Nova Scotia, CanadaFlight Research Laboratory, National Research Council Canada, Ottawa, Ontario, CanadaFlight Research Laboratory, National Research Council Canada, Ottawa, Ontario, Canada<p>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.</p>https://amt.copernicus.org/articles/18/471/2025/amt-18-471-2025.pdf |
| spellingShingle | L. Liu N. Bliankinshtein Y. Huang J. R. Gyakum P. M. Gabriel S. Xu M. Wolde Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions Atmospheric Measurement Techniques |
| title | Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions |
| title_full | Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions |
| title_fullStr | Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions |
| title_full_unstemmed | Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions |
| title_short | Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions |
| title_sort | comparative experimental validation of microwave hyperspectral atmospheric soundings in clear sky conditions |
| url | https://amt.copernicus.org/articles/18/471/2025/amt-18-471-2025.pdf |
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