Modelling the Caspian Sea and its catchment area using a coupled regional atmosphere-ocean model (RegCM4-ROMS): model design and preliminary results
We describe the development of a coupled regional atmosphere-ocean model (RegCM4-ROMS) and its implementation over the Caspian Sea basin. The coupled model is run for the period 1999–2008 (after a spin up of 4 yr) and it is compared to corresponding stand alone model simulations and a simulation in...
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Copernicus Publications
2013
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00023218 2023-05-15T18:18:04+02:00 Modelling the Caspian Sea and its catchment area using a coupled regional atmosphere-ocean model (RegCM4-ROMS): model design and preliminary results Turuncoglu, U. U. Giuliani, G. Elguindi, N. Giorgi, F. 2013-03 electronic https://doi.org/10.5194/gmd-6-283-2013 https://noa.gwlb.de/receive/cop_mods_00023218 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023173/gmd-6-283-2013.pdf https://gmd.copernicus.org/articles/6/283/2013/gmd-6-283-2013.pdf eng eng Copernicus Publications Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-6-283-2013 https://noa.gwlb.de/receive/cop_mods_00023218 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023173/gmd-6-283-2013.pdf https://gmd.copernicus.org/articles/6/283/2013/gmd-6-283-2013.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2013 ftnonlinearchiv https://doi.org/10.5194/gmd-6-283-2013 2022-02-08T22:50:44Z We describe the development of a coupled regional atmosphere-ocean model (RegCM4-ROMS) and its implementation over the Caspian Sea basin. The coupled model is run for the period 1999–2008 (after a spin up of 4 yr) and it is compared to corresponding stand alone model simulations and a simulation in which a distributed 1d lake model is run for the Caspian Sea. All model versions show a good performance in reproducing the climatology of the Caspian Sea basin, with relatively minor differences across them. The coupled ROMS produces realistic, although somewhat overestimated, Caspian Sea Surface Temperature (SST), with a considerable improvement compared to the use of the simpler coupled lake model. Simulated near surface salinity and sea currents are also realistic, although the upwelling over the eastern coastal regions is underestimated. The sea ice extent over the shallow northern shelf of the Caspian Sea and its seasonal evolution are well reproduced, however, a significant negative bias in sea-ice fraction exists due to the relatively poor representation of the bathymetry. ROMS also calculates the Caspian Sea Level (CSL), showing that for the present experiment excessive evaporation over the lake area leads to a drift in estimated CSL. Despite this problem, which requires further analysis due to many uncertainties in the estimation of CSL, overall the coupled RegCM4-ROMS system shows encouraging results in reproducing both the climatology of the region and the basic characteristics of the Caspian Sea. Article in Journal/Newspaper Sea ice Niedersächsisches Online-Archiv NOA Geoscientific Model Development 6 2 283 299 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Turuncoglu, U. U. Giuliani, G. Elguindi, N. Giorgi, F. Modelling the Caspian Sea and its catchment area using a coupled regional atmosphere-ocean model (RegCM4-ROMS): model design and preliminary results |
topic_facet |
article Verlagsveröffentlichung |
description |
We describe the development of a coupled regional atmosphere-ocean model (RegCM4-ROMS) and its implementation over the Caspian Sea basin. The coupled model is run for the period 1999–2008 (after a spin up of 4 yr) and it is compared to corresponding stand alone model simulations and a simulation in which a distributed 1d lake model is run for the Caspian Sea. All model versions show a good performance in reproducing the climatology of the Caspian Sea basin, with relatively minor differences across them. The coupled ROMS produces realistic, although somewhat overestimated, Caspian Sea Surface Temperature (SST), with a considerable improvement compared to the use of the simpler coupled lake model. Simulated near surface salinity and sea currents are also realistic, although the upwelling over the eastern coastal regions is underestimated. The sea ice extent over the shallow northern shelf of the Caspian Sea and its seasonal evolution are well reproduced, however, a significant negative bias in sea-ice fraction exists due to the relatively poor representation of the bathymetry. ROMS also calculates the Caspian Sea Level (CSL), showing that for the present experiment excessive evaporation over the lake area leads to a drift in estimated CSL. Despite this problem, which requires further analysis due to many uncertainties in the estimation of CSL, overall the coupled RegCM4-ROMS system shows encouraging results in reproducing both the climatology of the region and the basic characteristics of the Caspian Sea. |
format |
Article in Journal/Newspaper |
author |
Turuncoglu, U. U. Giuliani, G. Elguindi, N. Giorgi, F. |
author_facet |
Turuncoglu, U. U. Giuliani, G. Elguindi, N. Giorgi, F. |
author_sort |
Turuncoglu, U. U. |
title |
Modelling the Caspian Sea and its catchment area using a coupled regional atmosphere-ocean model (RegCM4-ROMS): model design and preliminary results |
title_short |
Modelling the Caspian Sea and its catchment area using a coupled regional atmosphere-ocean model (RegCM4-ROMS): model design and preliminary results |
title_full |
Modelling the Caspian Sea and its catchment area using a coupled regional atmosphere-ocean model (RegCM4-ROMS): model design and preliminary results |
title_fullStr |
Modelling the Caspian Sea and its catchment area using a coupled regional atmosphere-ocean model (RegCM4-ROMS): model design and preliminary results |
title_full_unstemmed |
Modelling the Caspian Sea and its catchment area using a coupled regional atmosphere-ocean model (RegCM4-ROMS): model design and preliminary results |
title_sort |
modelling the caspian sea and its catchment area using a coupled regional atmosphere-ocean model (regcm4-roms): model design and preliminary results |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/gmd-6-283-2013 https://noa.gwlb.de/receive/cop_mods_00023218 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023173/gmd-6-283-2013.pdf https://gmd.copernicus.org/articles/6/283/2013/gmd-6-283-2013.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-6-283-2013 https://noa.gwlb.de/receive/cop_mods_00023218 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00023173/gmd-6-283-2013.pdf https://gmd.copernicus.org/articles/6/283/2013/gmd-6-283-2013.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/gmd-6-283-2013 |
container_title |
Geoscientific Model Development |
container_volume |
6 |
container_issue |
2 |
container_start_page |
283 |
op_container_end_page |
299 |
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1766194310651314176 |