The importance of thermal and topographic forcing for the European climate
In this thesis I have studied several factors influencing the time average atmospheric circulation. The study introduced changes to the thermal and orographic forcing by altering and removing the heat sources and topography. The particular focus has been on Europe and the North Atlantic, to understa...
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ftoslouniv:oai:www.duo.uio.no:10852/12470 2024-09-30T14:38:59+00:00 The importance of thermal and topographic forcing for the European climate Ager-Wick, Anita Joe LaCasce 2008 http://hdl.handle.net/10852/12470 http://urn.nb.no/URN:NBN:no-18861 eng eng http://urn.nb.no/URN:NBN:no-18861 Ager-Wick, Anita. The importance of thermal and topographic forcing for the European climate. Masteroppgave, University of Oslo, 2008 http://hdl.handle.net/10852/12470 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.au=Ager-Wick, Anita&rft.title=The importance of thermal and topographic forcing for the European climate&rft.inst=University of Oslo&rft.date=2008&rft.degree=Masteroppgave URN:NBN:no-18861 71151 080651356 Fulltext https://www.duo.uio.no/bitstream/handle/10852/12470/1/main2b.pdf meteorologi oseanografi Europa klima golfstrømmen stasjonære Rossby bølger havstrømmer varmetransport VDP::450 Master thesis Masteroppgave 2008 ftoslouniv 2024-09-12T05:43:54Z In this thesis I have studied several factors influencing the time average atmospheric circulation. The study introduced changes to the thermal and orographic forcing by altering and removing the heat sources and topography. The particular focus has been on Europe and the North Atlantic, to understand better what determines Europe's wintertime climate. The model used in my work is the NCAR CAM3 model, in default and slab ocean model (SOM) mode. I did one control run and five modified runs, checking for the climatic effect of both the ocean and atmosphere. In the first modified run, I removed the surface temperature signature due to the ocean surface currents, and in the next run I removed the topography of the northern hemisphere. I then conducted two more runs similar to these two: one with zonal SST's, but with extended sea-ice cover, and another with altered topography in North America. Finally, the model was run in SOM mode and the ocean heat transport was shut-off. The orientation of the isotherms of sea surface temperature SST, and the presence of topography have only a weak effect on the temperature of Europe. Sea-ice proved to have a dramatic cooling effect and the oceanic heat transport keeps the Nordic Seas ice free. This means that although OHT only accounts for about one fifth of the total heat transport, it is crucial for European climate. Master Thesis Nordic Seas North Atlantic Sea ice Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
topic |
meteorologi oseanografi Europa klima golfstrømmen stasjonære Rossby bølger havstrømmer varmetransport VDP::450 |
spellingShingle |
meteorologi oseanografi Europa klima golfstrømmen stasjonære Rossby bølger havstrømmer varmetransport VDP::450 Ager-Wick, Anita The importance of thermal and topographic forcing for the European climate |
topic_facet |
meteorologi oseanografi Europa klima golfstrømmen stasjonære Rossby bølger havstrømmer varmetransport VDP::450 |
description |
In this thesis I have studied several factors influencing the time average atmospheric circulation. The study introduced changes to the thermal and orographic forcing by altering and removing the heat sources and topography. The particular focus has been on Europe and the North Atlantic, to understand better what determines Europe's wintertime climate. The model used in my work is the NCAR CAM3 model, in default and slab ocean model (SOM) mode. I did one control run and five modified runs, checking for the climatic effect of both the ocean and atmosphere. In the first modified run, I removed the surface temperature signature due to the ocean surface currents, and in the next run I removed the topography of the northern hemisphere. I then conducted two more runs similar to these two: one with zonal SST's, but with extended sea-ice cover, and another with altered topography in North America. Finally, the model was run in SOM mode and the ocean heat transport was shut-off. The orientation of the isotherms of sea surface temperature SST, and the presence of topography have only a weak effect on the temperature of Europe. Sea-ice proved to have a dramatic cooling effect and the oceanic heat transport keeps the Nordic Seas ice free. This means that although OHT only accounts for about one fifth of the total heat transport, it is crucial for European climate. |
author2 |
Joe LaCasce |
format |
Master Thesis |
author |
Ager-Wick, Anita |
author_facet |
Ager-Wick, Anita |
author_sort |
Ager-Wick, Anita |
title |
The importance of thermal and topographic forcing for the European climate |
title_short |
The importance of thermal and topographic forcing for the European climate |
title_full |
The importance of thermal and topographic forcing for the European climate |
title_fullStr |
The importance of thermal and topographic forcing for the European climate |
title_full_unstemmed |
The importance of thermal and topographic forcing for the European climate |
title_sort |
importance of thermal and topographic forcing for the european climate |
publishDate |
2008 |
url |
http://hdl.handle.net/10852/12470 http://urn.nb.no/URN:NBN:no-18861 |
genre |
Nordic Seas North Atlantic Sea ice |
genre_facet |
Nordic Seas North Atlantic Sea ice |
op_relation |
http://urn.nb.no/URN:NBN:no-18861 Ager-Wick, Anita. The importance of thermal and topographic forcing for the European climate. Masteroppgave, University of Oslo, 2008 http://hdl.handle.net/10852/12470 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.au=Ager-Wick, Anita&rft.title=The importance of thermal and topographic forcing for the European climate&rft.inst=University of Oslo&rft.date=2008&rft.degree=Masteroppgave URN:NBN:no-18861 71151 080651356 Fulltext https://www.duo.uio.no/bitstream/handle/10852/12470/1/main2b.pdf |
_version_ |
1811641550172585984 |