Imaging Considerations From a Geostationary Orbit Using the Short Wavelength Side of the Mid‐Infrared Water Vapor Absorption Band
Abstract Historically, the long wavelength side (6–7.5 μm) of the mid‐infrared water vapor absorption band has been used for imaging from the geostationary perspective. This began with the 6.4 μm band on Europe's Meteosat‐1. While geostationary sounders for moisture profiling, including China&#...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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American Geophysical Union (AGU)
2022-01-01
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| Series: | Earth and Space Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2021EA002080 |
| _version_ | 1818952776892284928 |
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| author | N. B. Miller M. M. Gunshor A. J. Merrelli T. S. L'Ecuyer T. J. Schmit J. J. Gerth N. J. Gordillo |
| author_facet | N. B. Miller M. M. Gunshor A. J. Merrelli T. S. L'Ecuyer T. J. Schmit J. J. Gerth N. J. Gordillo |
| author_sort | N. B. Miller |
| collection | DOAJ |
| description | Abstract Historically, the long wavelength side (6–7.5 μm) of the mid‐infrared water vapor absorption band has been used for imaging from the geostationary perspective. This began with the 6.4 μm band on Europe's Meteosat‐1. While geostationary sounders for moisture profiling, including China's hyperspectral resolution infrared sounder and a planned sounder from Europe, are or will be measuring the short wavelength side of the water vapor band, this is not the case for geostationary imagers. Shorter wavelength (5–6 μm) spectral bands for imaging applications should be considered for observing moisture in the mid and lower troposphere because of several potential advantages offered by this spectral range. The short wavelength side of the water vapor band contains fewer additional absorbing gases that overlap the water vapor absorption lines. In addition, the shorter wavelengths would show less diffraction blurring which could enable finer spatial resolution for turbulence detection. This study considers some of the differences and potential advantages of the spectral information in the short wavelength side of the water vapor absorption band from the perspective of geostationary imaging. For dry conditions land heating could impact the qualitative use of observed brightness temperatures at 5.1 μm, while the solar reflection component over most clear‐sky scenes is small for a 5.1 μm band and essentially zero for a 5.6 μm band. |
| first_indexed | 2024-12-20T09:55:46Z |
| format | Article |
| id | doaj.art-efd149a58d0e41b595d473de6289f90d |
| institution | Directory Open Access Journal |
| issn | 2333-5084 |
| language | English |
| last_indexed | 2024-12-20T09:55:46Z |
| publishDate | 2022-01-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj.art-efd149a58d0e41b595d473de6289f90d2022-12-21T19:44:28ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842022-01-0191n/an/a10.1029/2021EA002080Imaging Considerations From a Geostationary Orbit Using the Short Wavelength Side of the Mid‐Infrared Water Vapor Absorption BandN. B. Miller0M. M. Gunshor1A. J. Merrelli2T. S. L'Ecuyer3T. J. Schmit4J. J. Gerth5N. J. Gordillo6Cooperative Institute for Meteorological Satellite Studies Madison WI USACooperative Institute for Meteorological Satellite Studies Madison WI USACooperative Institute for Meteorological Satellite Studies Madison WI USACooperative Institute for Meteorological Satellite Studies Madison WI USANOAA/NESDIS/Center for Satellite Applications and Research Madison WI USANOAA/NWS Office of Observations Silver Spring MD USACooperative Institute for Meteorological Satellite Studies Madison WI USAAbstract Historically, the long wavelength side (6–7.5 μm) of the mid‐infrared water vapor absorption band has been used for imaging from the geostationary perspective. This began with the 6.4 μm band on Europe's Meteosat‐1. While geostationary sounders for moisture profiling, including China's hyperspectral resolution infrared sounder and a planned sounder from Europe, are or will be measuring the short wavelength side of the water vapor band, this is not the case for geostationary imagers. Shorter wavelength (5–6 μm) spectral bands for imaging applications should be considered for observing moisture in the mid and lower troposphere because of several potential advantages offered by this spectral range. The short wavelength side of the water vapor band contains fewer additional absorbing gases that overlap the water vapor absorption lines. In addition, the shorter wavelengths would show less diffraction blurring which could enable finer spatial resolution for turbulence detection. This study considers some of the differences and potential advantages of the spectral information in the short wavelength side of the water vapor absorption band from the perspective of geostationary imaging. For dry conditions land heating could impact the qualitative use of observed brightness temperatures at 5.1 μm, while the solar reflection component over most clear‐sky scenes is small for a 5.1 μm band and essentially zero for a 5.6 μm band.https://doi.org/10.1029/2021EA002080imagingremote sensingwater vapor |
| spellingShingle | N. B. Miller M. M. Gunshor A. J. Merrelli T. S. L'Ecuyer T. J. Schmit J. J. Gerth N. J. Gordillo Imaging Considerations From a Geostationary Orbit Using the Short Wavelength Side of the Mid‐Infrared Water Vapor Absorption Band Earth and Space Science imaging remote sensing water vapor |
| title | Imaging Considerations From a Geostationary Orbit Using the Short Wavelength Side of the Mid‐Infrared Water Vapor Absorption Band |
| title_full | Imaging Considerations From a Geostationary Orbit Using the Short Wavelength Side of the Mid‐Infrared Water Vapor Absorption Band |
| title_fullStr | Imaging Considerations From a Geostationary Orbit Using the Short Wavelength Side of the Mid‐Infrared Water Vapor Absorption Band |
| title_full_unstemmed | Imaging Considerations From a Geostationary Orbit Using the Short Wavelength Side of the Mid‐Infrared Water Vapor Absorption Band |
| title_short | Imaging Considerations From a Geostationary Orbit Using the Short Wavelength Side of the Mid‐Infrared Water Vapor Absorption Band |
| title_sort | imaging considerations from a geostationary orbit using the short wavelength side of the mid infrared water vapor absorption band |
| topic | imaging remote sensing water vapor |
| url | https://doi.org/10.1029/2021EA002080 |
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