Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site
Specific humidity inversions are extremely frequent in the Arctic atmosphere, and they are strongly intertwined with the energy budget, by affecting downward longwave radiation and cloud processes. Despite their importance, they have been the focus of a limited number of studies, and our knowledge o...
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Alma Mater Studiorum - Università di Bologna
2020
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ftunivbollaurea:oai:amslaurea.cib.unibo.it:21760 2023-05-15T14:26:16+02:00 Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site Chellini, Giovanni Levizzani, Vincenzo Ebell, Kerstin Crewell, Susanne 2020-10-22 http://amslaurea.unibo.it/21760/ unknown Alma Mater Studiorum - Università di Bologna Chellini, Giovanni (2020) Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site. [Laurea magistrale], Università di Bologna, Corso di Studio in Fisica del sistema terra [LM-DM270] <http://amslaurea.unibo.it/view/cds/CDS8626/>, Documento full-text non disponibile specific humidity inversion,IASI,AIRS,ERA5,Ny-Ålesund Fisica del sistema terra [LM-DM270] PeerReviewed info:eu-repo/semantics/masterThesis 2020 ftunivbollaurea 2022-05-01T15:22:55Z Specific humidity inversions are extremely frequent in the Arctic atmosphere, and they are strongly intertwined with the energy budget, by affecting downward longwave radiation and cloud processes. Despite their importance, they have been the focus of a limited number of studies, and our knowledge of their characteristics is limited because of the lack of in situ data in the region, and the presence of large errors in moisture variables in reanalyses. Retrievals from satellite infrared sounders could fill this knowledge gap. In this thesis, the capability of two benchmark satellite sounders, the Infrared Atmospheric Sounding Interferometer (IASI) and the Atmospheric Infrared Sounder (AIRS), to detect specific humidity inversions at an Arctic site, Ny-Ålesund, is systematically assessed for the first time. Additionally, an accurate characterization of specific humidity inversions above Ny-Ålesund is performed employing radiosonde data, and the capability to detect Arctic specific humidity inversions of the next-generation reanalysis ERA5 is also assessed. The assessment is performed by comparing specific humidity inversion statistics from radiosondes to analogous statistics obtained from co-located IASI and AIRS retrievals, as well as ERA5 fields. Results show that ERA5 provides a good representation of specific humidity inversion characteristics, while IASI and AIRS retrievals display strong limitations in capturing Arctic specific humidity inversions. Master Thesis Arctic Arctic Ny Ålesund Ny-Ålesund Università di Bologna: AMS Tesi di Laurea (Alm@DL) Arctic Ny-Ålesund |
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Università di Bologna: AMS Tesi di Laurea (Alm@DL) |
op_collection_id |
ftunivbollaurea |
language |
unknown |
topic |
specific humidity inversion,IASI,AIRS,ERA5,Ny-Ålesund Fisica del sistema terra [LM-DM270] |
spellingShingle |
specific humidity inversion,IASI,AIRS,ERA5,Ny-Ålesund Fisica del sistema terra [LM-DM270] Chellini, Giovanni Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site |
topic_facet |
specific humidity inversion,IASI,AIRS,ERA5,Ny-Ålesund Fisica del sistema terra [LM-DM270] |
description |
Specific humidity inversions are extremely frequent in the Arctic atmosphere, and they are strongly intertwined with the energy budget, by affecting downward longwave radiation and cloud processes. Despite their importance, they have been the focus of a limited number of studies, and our knowledge of their characteristics is limited because of the lack of in situ data in the region, and the presence of large errors in moisture variables in reanalyses. Retrievals from satellite infrared sounders could fill this knowledge gap. In this thesis, the capability of two benchmark satellite sounders, the Infrared Atmospheric Sounding Interferometer (IASI) and the Atmospheric Infrared Sounder (AIRS), to detect specific humidity inversions at an Arctic site, Ny-Ålesund, is systematically assessed for the first time. Additionally, an accurate characterization of specific humidity inversions above Ny-Ålesund is performed employing radiosonde data, and the capability to detect Arctic specific humidity inversions of the next-generation reanalysis ERA5 is also assessed. The assessment is performed by comparing specific humidity inversion statistics from radiosondes to analogous statistics obtained from co-located IASI and AIRS retrievals, as well as ERA5 fields. Results show that ERA5 provides a good representation of specific humidity inversion characteristics, while IASI and AIRS retrievals display strong limitations in capturing Arctic specific humidity inversions. |
author2 |
Levizzani, Vincenzo Ebell, Kerstin Crewell, Susanne |
format |
Master Thesis |
author |
Chellini, Giovanni |
author_facet |
Chellini, Giovanni |
author_sort |
Chellini, Giovanni |
title |
Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site |
title_short |
Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site |
title_full |
Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site |
title_fullStr |
Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site |
title_full_unstemmed |
Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site |
title_sort |
assessment of the capability of the infrared atmospheric sounding interferometer (iasi), the atmospheric infrared sounder (airs), and the era5 reanalysis to detect specific humidity inversions at an arctic site |
publisher |
Alma Mater Studiorum - Università di Bologna |
publishDate |
2020 |
url |
http://amslaurea.unibo.it/21760/ |
geographic |
Arctic Ny-Ålesund |
geographic_facet |
Arctic Ny-Ålesund |
genre |
Arctic Arctic Ny Ålesund Ny-Ålesund |
genre_facet |
Arctic Arctic Ny Ålesund Ny-Ålesund |
op_relation |
Chellini, Giovanni (2020) Assessment of the capability of the Infrared Atmospheric Sounding Interferometer (IASI), the Atmospheric Infrared Sounder (AIRS), and the ERA5 reanalysis to detect specific humidity inversions at an Arctic site. [Laurea magistrale], Università di Bologna, Corso di Studio in Fisica del sistema terra [LM-DM270] <http://amslaurea.unibo.it/view/cds/CDS8626/>, Documento full-text non disponibile |
_version_ |
1766298749360930816 |