Angular sampling of a monochromatic, wide-field-of-view camera to augment next-generation Earth radiation budget satellite observations
<p>Earth radiation budget (ERB) satellite observations require conversion of the measured radiance, which is a remotely sensed quantity, to a derived irradiance, which is the relevant energy balance quantity routinely used in modeling and analysis of the climate system. The state-of-the-art ap...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-08-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/16/3609/2023/amt-16-3609-2023.pdf |
| _version_ | 1797751927792992256 |
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| author | J. J. Gristey J. J. Gristey J. J. Gristey K. S. Schmidt K. S. Schmidt H. Chen D. R. Feldman B. C. Kindel J. Mauss J. Mauss M. van den Heever M. van den Heever M. Z. Hakuba P. Pilewskie P. Pilewskie |
| author_facet | J. J. Gristey J. J. Gristey J. J. Gristey K. S. Schmidt K. S. Schmidt H. Chen D. R. Feldman B. C. Kindel J. Mauss J. Mauss M. van den Heever M. van den Heever M. Z. Hakuba P. Pilewskie P. Pilewskie |
| author_sort | J. J. Gristey |
| collection | DOAJ |
| description | <p>Earth radiation budget (ERB) satellite observations
require conversion of the measured radiance, which is a remotely sensed
quantity, to a derived irradiance, which is the relevant energy balance
quantity routinely used in modeling and analysis of the climate system. The state-of-the-art approach for radiance-to-irradiance conversion taken by the
Clouds and the Earth's Radiant Energy System (CERES) benefits from the
exhaustive sampling of radiance anisotropy by multiple CERES instruments
across many years. Unfortunately, the CERES approach is not easily extended
to new ERB spectral channels that lack previous sampling, such as the
“split-shortwave” planned to be part of the next-generation ERB mission
Libera. As an alternative approach, the capability of a monochromatic,
wide-field-of-view camera to provide dense angular sampling in a much
shorter time frame is assessed. We present a general concept for how this can be achieved and quantify the proficiency of a camera to provide rapid
angular distribution model (ADM) generation for the new Libera
ultraviolet and visible (VIS) sub-band. A single mid-visible camera
wavelength (555 nm) is shown to be ideal for representing the VIS sub-band,
requiring only basic scene stratification for 555 nm to VIS conversion.
Synthetic camera sampling with realistic operating constraints also
demonstrates that the angular radiance field of various scenes can be well
populated within a single day of sampling, a notable advance over existing
approaches. These results provide a path for generating
observationally based VIS ADMs with minimal lag time following Libera's
launch. Coupled with efforts to utilize a camera for scene identification,
this may also pave the way for future ERB satellite systems to develop
stand-alone irradiance products for arbitrary sets of spectral channels,
opening up new measurement and science possibilities.</p> |
| first_indexed | 2024-03-12T16:55:46Z |
| format | Article |
| id | doaj.art-81d3e49d513547f5adfd830329acbb83 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-03-12T16:55:46Z |
| publishDate | 2023-08-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-81d3e49d513547f5adfd830329acbb832023-08-08T07:40:11ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482023-08-01163609363010.5194/amt-16-3609-2023Angular sampling of a monochromatic, wide-field-of-view camera to augment next-generation Earth radiation budget satellite observationsJ. J. Gristey0J. J. Gristey1J. J. Gristey2K. S. Schmidt3K. S. Schmidt4H. Chen5D. R. Feldman6B. C. Kindel7J. Mauss8J. Mauss9M. van den Heever10M. van den Heever11M. Z. Hakuba12P. Pilewskie13P. Pilewskie14Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USANOAA Chemical Sciences Laboratory, Boulder, CO, USALaboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USALaboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USADepartment of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, USALaboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USAEarth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, CA, USALaboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USALaboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USADepartment of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, USALaboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USADepartment of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, USANASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USALaboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USADepartment of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, USA<p>Earth radiation budget (ERB) satellite observations require conversion of the measured radiance, which is a remotely sensed quantity, to a derived irradiance, which is the relevant energy balance quantity routinely used in modeling and analysis of the climate system. The state-of-the-art approach for radiance-to-irradiance conversion taken by the Clouds and the Earth's Radiant Energy System (CERES) benefits from the exhaustive sampling of radiance anisotropy by multiple CERES instruments across many years. Unfortunately, the CERES approach is not easily extended to new ERB spectral channels that lack previous sampling, such as the “split-shortwave” planned to be part of the next-generation ERB mission Libera. As an alternative approach, the capability of a monochromatic, wide-field-of-view camera to provide dense angular sampling in a much shorter time frame is assessed. We present a general concept for how this can be achieved and quantify the proficiency of a camera to provide rapid angular distribution model (ADM) generation for the new Libera ultraviolet and visible (VIS) sub-band. A single mid-visible camera wavelength (555 nm) is shown to be ideal for representing the VIS sub-band, requiring only basic scene stratification for 555 nm to VIS conversion. Synthetic camera sampling with realistic operating constraints also demonstrates that the angular radiance field of various scenes can be well populated within a single day of sampling, a notable advance over existing approaches. These results provide a path for generating observationally based VIS ADMs with minimal lag time following Libera's launch. Coupled with efforts to utilize a camera for scene identification, this may also pave the way for future ERB satellite systems to develop stand-alone irradiance products for arbitrary sets of spectral channels, opening up new measurement and science possibilities.</p>https://amt.copernicus.org/articles/16/3609/2023/amt-16-3609-2023.pdf |
| spellingShingle | J. J. Gristey J. J. Gristey J. J. Gristey K. S. Schmidt K. S. Schmidt H. Chen D. R. Feldman B. C. Kindel J. Mauss J. Mauss M. van den Heever M. van den Heever M. Z. Hakuba P. Pilewskie P. Pilewskie Angular sampling of a monochromatic, wide-field-of-view camera to augment next-generation Earth radiation budget satellite observations Atmospheric Measurement Techniques |
| title | Angular sampling of a monochromatic, wide-field-of-view camera to augment next-generation Earth radiation budget satellite observations |
| title_full | Angular sampling of a monochromatic, wide-field-of-view camera to augment next-generation Earth radiation budget satellite observations |
| title_fullStr | Angular sampling of a monochromatic, wide-field-of-view camera to augment next-generation Earth radiation budget satellite observations |
| title_full_unstemmed | Angular sampling of a monochromatic, wide-field-of-view camera to augment next-generation Earth radiation budget satellite observations |
| title_short | Angular sampling of a monochromatic, wide-field-of-view camera to augment next-generation Earth radiation budget satellite observations |
| title_sort | angular sampling of a monochromatic wide field of view camera to augment next generation earth radiation budget satellite observations |
| url | https://amt.copernicus.org/articles/16/3609/2023/amt-16-3609-2023.pdf |
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