A climatology of cold pools distinct from background turbulence at the Eastern North Atlantic observations site
We develop an algorithm to identify cold pools at the DOE’s Eastern North Atlantic (ENA) site on Graciosa Island and examine the statistics of retrieved cold pools for the entire observational record from late 2016 to 2023. The retrieval strategy relies on leveraging above-background bivariate devia...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00073192 2024-05-19T07:44:47+00:00 A climatology of cold pools distinct from background turbulence at the Eastern North Atlantic observations site Smalley, Mark A. Witte, Mikael K. Jeong, Jong-Hoon Chinita, Maria J. 2024-04 electronic https://doi.org/10.5194/egusphere-2024-1098 https://noa.gwlb.de/receive/cop_mods_00073192 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071374/egusphere-2024-1098.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1098/egusphere-2024-1098.pdf eng eng Copernicus Publications https://doi.org/10.5194/egusphere-2024-1098 https://noa.gwlb.de/receive/cop_mods_00073192 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071374/egusphere-2024-1098.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1098/egusphere-2024-1098.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/egusphere-2024-1098 2024-04-29T23:46:10Z We develop an algorithm to identify cold pools at the DOE’s Eastern North Atlantic (ENA) site on Graciosa Island and examine the statistics of retrieved cold pools for the entire observational record from late 2016 to 2023. The retrieval strategy relies on leveraging above-background bivariate deviations in near-surface temperature and water vapor mixing ratio from the ENA station time series. Cold pools at ENA tend to be weak with a prominent annual cycle peaking in the cooler months and caused by reductions in the background turbulence during those months. Often, surface rain events are not associated with cold pools due to a combination of factors including but not limited to high background turbulence, high relative humidity, and low rain rate. The retrieval correctly identifies cold pools that are not associated with observed surface rain at the met station. Understanding the factors that lead to the formation of weak cold pools will lead to a greater understanding of the dynamics of the marine boundary layer at ENA and how those dynamics feed back to the cloud morphological structures. Article in Journal/Newspaper North Atlantic Niedersächsisches Online-Archiv NOA |
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language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Smalley, Mark A. Witte, Mikael K. Jeong, Jong-Hoon Chinita, Maria J. A climatology of cold pools distinct from background turbulence at the Eastern North Atlantic observations site |
topic_facet |
article Verlagsveröffentlichung |
description |
We develop an algorithm to identify cold pools at the DOE’s Eastern North Atlantic (ENA) site on Graciosa Island and examine the statistics of retrieved cold pools for the entire observational record from late 2016 to 2023. The retrieval strategy relies on leveraging above-background bivariate deviations in near-surface temperature and water vapor mixing ratio from the ENA station time series. Cold pools at ENA tend to be weak with a prominent annual cycle peaking in the cooler months and caused by reductions in the background turbulence during those months. Often, surface rain events are not associated with cold pools due to a combination of factors including but not limited to high background turbulence, high relative humidity, and low rain rate. The retrieval correctly identifies cold pools that are not associated with observed surface rain at the met station. Understanding the factors that lead to the formation of weak cold pools will lead to a greater understanding of the dynamics of the marine boundary layer at ENA and how those dynamics feed back to the cloud morphological structures. |
format |
Article in Journal/Newspaper |
author |
Smalley, Mark A. Witte, Mikael K. Jeong, Jong-Hoon Chinita, Maria J. |
author_facet |
Smalley, Mark A. Witte, Mikael K. Jeong, Jong-Hoon Chinita, Maria J. |
author_sort |
Smalley, Mark A. |
title |
A climatology of cold pools distinct from background turbulence at the Eastern North Atlantic observations site |
title_short |
A climatology of cold pools distinct from background turbulence at the Eastern North Atlantic observations site |
title_full |
A climatology of cold pools distinct from background turbulence at the Eastern North Atlantic observations site |
title_fullStr |
A climatology of cold pools distinct from background turbulence at the Eastern North Atlantic observations site |
title_full_unstemmed |
A climatology of cold pools distinct from background turbulence at the Eastern North Atlantic observations site |
title_sort |
climatology of cold pools distinct from background turbulence at the eastern north atlantic observations site |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/egusphere-2024-1098 https://noa.gwlb.de/receive/cop_mods_00073192 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071374/egusphere-2024-1098.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1098/egusphere-2024-1098.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://doi.org/10.5194/egusphere-2024-1098 https://noa.gwlb.de/receive/cop_mods_00073192 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071374/egusphere-2024-1098.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-1098/egusphere-2024-1098.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-2024-1098 |
_version_ |
1799484651233869824 |