Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region
Commercial GNSS RO products are being touted for their coverage in polar regions where COSMIC-2 observations don’t reach. This study seeks to explore their value for Arctic PBL investigations where sufficient lower atmospheric penetration of GNSS RO is vital for representing the persistent...
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ftcopernicus:oai:publications.copernicus.org:amtd119806 2024-09-15T17:53:25+00:00 Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region Ganeshan, Manisha Wu, Dong L. Santanello, Joseph A. Gong, Jie Ao, Chi O. Vergados, Panagiotis Nelson, Kevin 2024-05-21 application/pdf https://doi.org/10.5194/amt-2024-83 https://amt.copernicus.org/preprints/amt-2024-83/ eng eng doi:10.5194/amt-2024-83 https://amt.copernicus.org/preprints/amt-2024-83/ eISSN: 1867-8548 Text 2024 ftcopernicus https://doi.org/10.5194/amt-2024-83 2024-08-28T05:24:15Z Commercial GNSS RO products are being touted for their coverage in polar regions where COSMIC-2 observations don’t reach. This study seeks to explore their value for Arctic PBL investigations where sufficient lower atmospheric penetration of GNSS RO is vital for representing the persistently shallow PBL. Both NASA purchased commercial RO products, Spire and GeoOptics, have improved lower tropospheric penetration probability over the Arctic Ocean compared to MetOp observations, with Spire having greater volume of observations (nearly two orders of magnitude) compared to GeoOptics. A seasonal cycle is evident in the RO penetration probability (except for Spire) that is found to be related to the water vapor pressure. For winter months, at the 500 m level, which is the standard cut-off threshold used for GNSS RO PBL studies, both products yield a penetration probability of ~80 % of total observations over the Arctic Ocean and up to ~100 % over the frozen sea ice region. As a result, both products are able to sufficiently represent the shallow Arctic PBLH (less than 300 m depth) which is comparable to the PBLH from MERRA-2 reanalysis, unlike MetOp observations which fails to capture PBL heights below 400 m. Text Arctic Ocean Sea ice Copernicus Publications: E-Journals |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Commercial GNSS RO products are being touted for their coverage in polar regions where COSMIC-2 observations don’t reach. This study seeks to explore their value for Arctic PBL investigations where sufficient lower atmospheric penetration of GNSS RO is vital for representing the persistently shallow PBL. Both NASA purchased commercial RO products, Spire and GeoOptics, have improved lower tropospheric penetration probability over the Arctic Ocean compared to MetOp observations, with Spire having greater volume of observations (nearly two orders of magnitude) compared to GeoOptics. A seasonal cycle is evident in the RO penetration probability (except for Spire) that is found to be related to the water vapor pressure. For winter months, at the 500 m level, which is the standard cut-off threshold used for GNSS RO PBL studies, both products yield a penetration probability of ~80 % of total observations over the Arctic Ocean and up to ~100 % over the frozen sea ice region. As a result, both products are able to sufficiently represent the shallow Arctic PBLH (less than 300 m depth) which is comparable to the PBLH from MERRA-2 reanalysis, unlike MetOp observations which fails to capture PBL heights below 400 m. |
format |
Text |
author |
Ganeshan, Manisha Wu, Dong L. Santanello, Joseph A. Gong, Jie Ao, Chi O. Vergados, Panagiotis Nelson, Kevin |
spellingShingle |
Ganeshan, Manisha Wu, Dong L. Santanello, Joseph A. Gong, Jie Ao, Chi O. Vergados, Panagiotis Nelson, Kevin Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region |
author_facet |
Ganeshan, Manisha Wu, Dong L. Santanello, Joseph A. Gong, Jie Ao, Chi O. Vergados, Panagiotis Nelson, Kevin |
author_sort |
Ganeshan, Manisha |
title |
Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region |
title_short |
Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region |
title_full |
Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region |
title_fullStr |
Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region |
title_full_unstemmed |
Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region |
title_sort |
exploring commercial gnss ro products for planetary boundary layer studies in the arctic region |
publishDate |
2024 |
url |
https://doi.org/10.5194/amt-2024-83 https://amt.copernicus.org/preprints/amt-2024-83/ |
genre |
Arctic Ocean Sea ice |
genre_facet |
Arctic Ocean Sea ice |
op_source |
eISSN: 1867-8548 |
op_relation |
doi:10.5194/amt-2024-83 https://amt.copernicus.org/preprints/amt-2024-83/ |
op_doi |
https://doi.org/10.5194/amt-2024-83 |
_version_ |
1810295512242323456 |