Model sensitivity runs for Southern Ocean studies
The present generation of global climate models is characterized by insufficient reflection of short-wave radiation over the Southern Ocean due to misrepresentation of clouds. This is a significant concern as it leads to excessive heating of the ocean surface, sea surface temperature biases, and sub...
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ftzenodo:oai:zenodo.org:3229446 2023-05-15T18:24:05+02:00 Model sensitivity runs for Southern Ocean studies Varma, Vidya 2019-09-30 https://zenodo.org/record/3229446 https://doi.org/10.5281/zenodo.3229446 unknown doi:10.5281/zenodo.3229445 https://zenodo.org/record/3229446 https://doi.org/10.5281/zenodo.3229446 oai:zenodo.org:3229446 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode southern ocean short-wave radiation bias cloud micro-physics ice crystal shape info:eu-repo/semantics/other dataset 2019 ftzenodo https://doi.org/10.5281/zenodo.322944610.5281/zenodo.3229445 2023-03-11T01:40:26Z The present generation of global climate models is characterized by insufficient reflection of short-wave radiation over the Southern Ocean due to misrepresentation of clouds. This is a significant concern as it leads to excessive heating of the ocean surface, sea surface temperature biases, and subsequent problems with atmospheric dynamics. Using the recent version of the Met Office's Unified Model, we show that modifying the cloud micro-physics scheme with a more realistic value for the shape parameter of atmospheric ice-crystals suggested by theory and observations, benefits the simulation of short-wave radiation. In the control model, for calculating the growth rate through deposition process, it is assumed that all ice particles are spherical in shape. By approximating the value for plates or aggregates of ice crystals, along with modified ice nucleation temperatures, we show that there is a reduction in the annual-mean short-wave cloud radiative effect over the Southern Ocean. Dataset Southern Ocean Zenodo Southern Ocean |
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Zenodo |
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ftzenodo |
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unknown |
topic |
southern ocean short-wave radiation bias cloud micro-physics ice crystal shape |
spellingShingle |
southern ocean short-wave radiation bias cloud micro-physics ice crystal shape Varma, Vidya Model sensitivity runs for Southern Ocean studies |
topic_facet |
southern ocean short-wave radiation bias cloud micro-physics ice crystal shape |
description |
The present generation of global climate models is characterized by insufficient reflection of short-wave radiation over the Southern Ocean due to misrepresentation of clouds. This is a significant concern as it leads to excessive heating of the ocean surface, sea surface temperature biases, and subsequent problems with atmospheric dynamics. Using the recent version of the Met Office's Unified Model, we show that modifying the cloud micro-physics scheme with a more realistic value for the shape parameter of atmospheric ice-crystals suggested by theory and observations, benefits the simulation of short-wave radiation. In the control model, for calculating the growth rate through deposition process, it is assumed that all ice particles are spherical in shape. By approximating the value for plates or aggregates of ice crystals, along with modified ice nucleation temperatures, we show that there is a reduction in the annual-mean short-wave cloud radiative effect over the Southern Ocean. |
format |
Dataset |
author |
Varma, Vidya |
author_facet |
Varma, Vidya |
author_sort |
Varma, Vidya |
title |
Model sensitivity runs for Southern Ocean studies |
title_short |
Model sensitivity runs for Southern Ocean studies |
title_full |
Model sensitivity runs for Southern Ocean studies |
title_fullStr |
Model sensitivity runs for Southern Ocean studies |
title_full_unstemmed |
Model sensitivity runs for Southern Ocean studies |
title_sort |
model sensitivity runs for southern ocean studies |
publishDate |
2019 |
url |
https://zenodo.org/record/3229446 https://doi.org/10.5281/zenodo.3229446 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
doi:10.5281/zenodo.3229445 https://zenodo.org/record/3229446 https://doi.org/10.5281/zenodo.3229446 oai:zenodo.org:3229446 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.322944610.5281/zenodo.3229445 |
_version_ |
1766204374363668480 |