ICESat‐2 Atmospheric Channel Description, Data Processing and First Results
Abstract The Advanced Topographic Laser Altimeter System (ATLAS) was launched aboard the Ice Cloud and land‐Elevation Satellite‐2 (ICESat‐2) satellite in September 2018. ATLAS is a single wavelength (532 nm) lidar system designed to acquire high resolution measurements of the earth's surface wh...
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ftdoajarticles:oai:doaj.org/article:bde24b9e139b4f129ade650f45a9dd19 2023-05-15T17:14:20+02:00 ICESat‐2 Atmospheric Channel Description, Data Processing and First Results Stephen P. Palm Yuekui Yang Ute Herzfeld David Hancock Adam Hayes Patrick Selmer William Hart Dennis Hlavka 2021-08-01T00:00:00Z https://doi.org/10.1029/2020EA001470 https://doaj.org/article/bde24b9e139b4f129ade650f45a9dd19 EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2020EA001470 https://doaj.org/toc/2333-5084 2333-5084 doi:10.1029/2020EA001470 https://doaj.org/article/bde24b9e139b4f129ade650f45a9dd19 Earth and Space Science, Vol 8, Iss 8, Pp n/a-n/a (2021) lidar ICESat‐2 atmosphere clouds aerosols Astronomy QB1-991 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.1029/2020EA001470 2022-12-31T13:08:57Z Abstract The Advanced Topographic Laser Altimeter System (ATLAS) was launched aboard the Ice Cloud and land‐Elevation Satellite‐2 (ICESat‐2) satellite in September 2018. ATLAS is a single wavelength (532 nm) lidar system designed to acquire high resolution measurements of the earth's surface while also obtaining atmospheric backscatter from molecules, clouds, and aerosols. Because ATLAS is optimized for altimetry, the atmospheric data acquired is unique in many respects and requires non‐standard analysis techniques. For example, the high repetition rate laser limits the vertical extent of the profiles to just 14 km and causes atmospheric scattering from above 15 km to be added to the scattering in the lower 0–14 km profile. In addition, the limited vertical range of the acquired profiles renders it difficult to compute the magnitude of the solar background and hinders the application of standard calibration techniques. Despite these limitations, methods have been developed to successfully produce data products that have value to the atmospheric community for cloud and aerosol research and are currently available at the National Snow and Ice Data Center (NSIDC). In this paper we describe the ICESat‐2 atmospheric channel and the methods used to process the ATLAS raw photon count data to obtain calibrated backscatter and higher level products such as layer heights and type, blowing snow, column optical depth and apparent surface reflectance. Article in Journal/Newspaper National Snow and Ice Data Center Directory of Open Access Journals: DOAJ Articles Earth and Space Science 8 8 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
lidar ICESat‐2 atmosphere clouds aerosols Astronomy QB1-991 Geology QE1-996.5 |
spellingShingle |
lidar ICESat‐2 atmosphere clouds aerosols Astronomy QB1-991 Geology QE1-996.5 Stephen P. Palm Yuekui Yang Ute Herzfeld David Hancock Adam Hayes Patrick Selmer William Hart Dennis Hlavka ICESat‐2 Atmospheric Channel Description, Data Processing and First Results |
topic_facet |
lidar ICESat‐2 atmosphere clouds aerosols Astronomy QB1-991 Geology QE1-996.5 |
description |
Abstract The Advanced Topographic Laser Altimeter System (ATLAS) was launched aboard the Ice Cloud and land‐Elevation Satellite‐2 (ICESat‐2) satellite in September 2018. ATLAS is a single wavelength (532 nm) lidar system designed to acquire high resolution measurements of the earth's surface while also obtaining atmospheric backscatter from molecules, clouds, and aerosols. Because ATLAS is optimized for altimetry, the atmospheric data acquired is unique in many respects and requires non‐standard analysis techniques. For example, the high repetition rate laser limits the vertical extent of the profiles to just 14 km and causes atmospheric scattering from above 15 km to be added to the scattering in the lower 0–14 km profile. In addition, the limited vertical range of the acquired profiles renders it difficult to compute the magnitude of the solar background and hinders the application of standard calibration techniques. Despite these limitations, methods have been developed to successfully produce data products that have value to the atmospheric community for cloud and aerosol research and are currently available at the National Snow and Ice Data Center (NSIDC). In this paper we describe the ICESat‐2 atmospheric channel and the methods used to process the ATLAS raw photon count data to obtain calibrated backscatter and higher level products such as layer heights and type, blowing snow, column optical depth and apparent surface reflectance. |
format |
Article in Journal/Newspaper |
author |
Stephen P. Palm Yuekui Yang Ute Herzfeld David Hancock Adam Hayes Patrick Selmer William Hart Dennis Hlavka |
author_facet |
Stephen P. Palm Yuekui Yang Ute Herzfeld David Hancock Adam Hayes Patrick Selmer William Hart Dennis Hlavka |
author_sort |
Stephen P. Palm |
title |
ICESat‐2 Atmospheric Channel Description, Data Processing and First Results |
title_short |
ICESat‐2 Atmospheric Channel Description, Data Processing and First Results |
title_full |
ICESat‐2 Atmospheric Channel Description, Data Processing and First Results |
title_fullStr |
ICESat‐2 Atmospheric Channel Description, Data Processing and First Results |
title_full_unstemmed |
ICESat‐2 Atmospheric Channel Description, Data Processing and First Results |
title_sort |
icesat‐2 atmospheric channel description, data processing and first results |
publisher |
American Geophysical Union (AGU) |
publishDate |
2021 |
url |
https://doi.org/10.1029/2020EA001470 https://doaj.org/article/bde24b9e139b4f129ade650f45a9dd19 |
genre |
National Snow and Ice Data Center |
genre_facet |
National Snow and Ice Data Center |
op_source |
Earth and Space Science, Vol 8, Iss 8, Pp n/a-n/a (2021) |
op_relation |
https://doi.org/10.1029/2020EA001470 https://doaj.org/toc/2333-5084 2333-5084 doi:10.1029/2020EA001470 https://doaj.org/article/bde24b9e139b4f129ade650f45a9dd19 |
op_doi |
https://doi.org/10.1029/2020EA001470 |
container_title |
Earth and Space Science |
container_volume |
8 |
container_issue |
8 |
_version_ |
1766071700781268992 |