The Infrared Absolute Radiance Interferometer (ARI) for CLARREO
The Absolute Radiance Interferometer (ARI) is an infrared spectrometer designed to serve as an on-orbit radiometric reference with the ultra-high accuracy (better than 0.1 K 3‑σ or k = 3 brightness temperature at scene brightness temperature) needed to optimize measurement of the long-term changes o...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/12/12/1915 |
| _version_ | 1827715163021639680 |
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| author | Joe K. Taylor Henry E. Revercomb Fred A. Best David C. Tobin P. Jonathan Gero |
| author_facet | Joe K. Taylor Henry E. Revercomb Fred A. Best David C. Tobin P. Jonathan Gero |
| author_sort | Joe K. Taylor |
| collection | DOAJ |
| description | The Absolute Radiance Interferometer (ARI) is an infrared spectrometer designed to serve as an on-orbit radiometric reference with the ultra-high accuracy (better than 0.1 K 3‑σ or k = 3 brightness temperature at scene brightness temperature) needed to optimize measurement of the long-term changes of Earth’s atmosphere and surface. If flown in an orbit that frequently crosses sun-synchronous orbits, ARI could be used to inter-calibrate the international fleet of infrared (IR) hyperspectral sounders to similar measurement accuracy, thereby establishing an observing system capable of achieving sampling biases on high-information-content spectral radiance products that are also < 0.1 K 3‑σ. It has been shown that such a climate observing system with <0.1 K 2‑σ overall accuracy would make it possible to realize times to detect subtle trends of temperature and water vapor distributions that closely match those of an ideal system, given the limit set by the natural variability of the atmosphere. This paper presents the ARI sensor's overall design, the new technologies developed to allow on-orbit verification and test of its accuracy, and the laboratory results that demonstrate its capability. In addition, we describe the techniques and uncertainty estimates for transferring ARI accuracy to operational sounders, providing economical global coverage. Societal challenges posed by climate change suggest that a Pathfinder ARI should be deployed as soon as possible. |
| first_indexed | 2024-03-10T19:12:34Z |
| format | Article |
| id | doaj.art-e9c91fdb6f494d5381cfb18e4c24666a |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T19:12:34Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-e9c91fdb6f494d5381cfb18e4c24666a2023-11-20T03:41:41ZengMDPI AGRemote Sensing2072-42922020-06-011212191510.3390/rs12121915The Infrared Absolute Radiance Interferometer (ARI) for CLARREOJoe K. Taylor0Henry E. Revercomb1Fred A. Best2David C. Tobin3P. Jonathan Gero4Space Science and Engineering Center, University of Wisconsin-Madison, Madison, WI 53719, USASpace Science and Engineering Center, University of Wisconsin-Madison, Madison, WI 53719, USASpace Science and Engineering Center, University of Wisconsin-Madison, Madison, WI 53719, USASpace Science and Engineering Center, University of Wisconsin-Madison, Madison, WI 53719, USASpace Science and Engineering Center, University of Wisconsin-Madison, Madison, WI 53719, USAThe Absolute Radiance Interferometer (ARI) is an infrared spectrometer designed to serve as an on-orbit radiometric reference with the ultra-high accuracy (better than 0.1 K 3‑σ or k = 3 brightness temperature at scene brightness temperature) needed to optimize measurement of the long-term changes of Earth’s atmosphere and surface. If flown in an orbit that frequently crosses sun-synchronous orbits, ARI could be used to inter-calibrate the international fleet of infrared (IR) hyperspectral sounders to similar measurement accuracy, thereby establishing an observing system capable of achieving sampling biases on high-information-content spectral radiance products that are also < 0.1 K 3‑σ. It has been shown that such a climate observing system with <0.1 K 2‑σ overall accuracy would make it possible to realize times to detect subtle trends of temperature and water vapor distributions that closely match those of an ideal system, given the limit set by the natural variability of the atmosphere. This paper presents the ARI sensor's overall design, the new technologies developed to allow on-orbit verification and test of its accuracy, and the laboratory results that demonstrate its capability. In addition, we describe the techniques and uncertainty estimates for transferring ARI accuracy to operational sounders, providing economical global coverage. Societal challenges posed by climate change suggest that a Pathfinder ARI should be deployed as soon as possible.https://www.mdpi.com/2072-4292/12/12/1915fourier transform spectrometerclimate benchmark measurementinfraredfar-infraredinfrared sounderGSICS |
| spellingShingle | Joe K. Taylor Henry E. Revercomb Fred A. Best David C. Tobin P. Jonathan Gero The Infrared Absolute Radiance Interferometer (ARI) for CLARREO Remote Sensing fourier transform spectrometer climate benchmark measurement infrared far-infrared infrared sounder GSICS |
| title | The Infrared Absolute Radiance Interferometer (ARI) for CLARREO |
| title_full | The Infrared Absolute Radiance Interferometer (ARI) for CLARREO |
| title_fullStr | The Infrared Absolute Radiance Interferometer (ARI) for CLARREO |
| title_full_unstemmed | The Infrared Absolute Radiance Interferometer (ARI) for CLARREO |
| title_short | The Infrared Absolute Radiance Interferometer (ARI) for CLARREO |
| title_sort | infrared absolute radiance interferometer ari for clarreo |
| topic | fourier transform spectrometer climate benchmark measurement infrared far-infrared infrared sounder GSICS |
| url | https://www.mdpi.com/2072-4292/12/12/1915 |
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