Tropical impact on the East Asian Winter Monsoon
The tropical impact on the East Asian winter monsoon (EAWM) is examined in an ensemble of atmospheric general circulation model runs that use relaxation towards the ERA-40 reanalysis in the tropics for winters between 1960/61 and 2001/02 and performed with a recent version of the European Centre for...
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ftoceanrep:oai:oceanrep.geomar.de:24624 2023-05-15T18:18:14+02:00 Tropical impact on the East Asian Winter Monsoon Gollan, Gereon Greatbatch, Richard John Jung, Thomas 2013 slideshow https://oceanrep.geomar.de/id/eprint/24624/ https://oceanrep.geomar.de/id/eprint/24624/1/GG_EAWM_EGU_13.pdf en eng https://oceanrep.geomar.de/id/eprint/24624/1/GG_EAWM_EGU_13.pdf Gollan, G. , Greatbatch, R. J. and Jung, T. (2013) Tropical impact on the East Asian Winter Monsoon . [Talk] In: EGU General Assembly 2013. , 07.-12.04.2013, Vienna, Austria . Conference or Workshop Item NonPeerReviewed 2013 ftoceanrep 2023-04-07T15:13:27Z The tropical impact on the East Asian winter monsoon (EAWM) is examined in an ensemble of atmospheric general circulation model runs that use relaxation towards the ERA-40 reanalysis in the tropics for winters between 1960/61 and 2001/02 and performed with a recent version of the European Centre for Medium-Range Weather Forecasts model. 25% of the interannual variance of the EAWM can be reproduced by the model experiments with relaxation in the ensemble mean, even though the influence from ENSO appears to be weak. The implication is that there is the possibility of enhanced predictability for the EAWM resulting from improved forecast skill in the tropics as a whole. Prescribing observed sea surface temperature and sea ice without using relaxation cannot reproduce the interannual variability of the EAWM in our experiments, questioning the usefulness of uncoupled atmosphere models in this region, consistent with previous studies. Conference Object Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The tropical impact on the East Asian winter monsoon (EAWM) is examined in an ensemble of atmospheric general circulation model runs that use relaxation towards the ERA-40 reanalysis in the tropics for winters between 1960/61 and 2001/02 and performed with a recent version of the European Centre for Medium-Range Weather Forecasts model. 25% of the interannual variance of the EAWM can be reproduced by the model experiments with relaxation in the ensemble mean, even though the influence from ENSO appears to be weak. The implication is that there is the possibility of enhanced predictability for the EAWM resulting from improved forecast skill in the tropics as a whole. Prescribing observed sea surface temperature and sea ice without using relaxation cannot reproduce the interannual variability of the EAWM in our experiments, questioning the usefulness of uncoupled atmosphere models in this region, consistent with previous studies. |
format |
Conference Object |
author |
Gollan, Gereon Greatbatch, Richard John Jung, Thomas |
spellingShingle |
Gollan, Gereon Greatbatch, Richard John Jung, Thomas Tropical impact on the East Asian Winter Monsoon |
author_facet |
Gollan, Gereon Greatbatch, Richard John Jung, Thomas |
author_sort |
Gollan, Gereon |
title |
Tropical impact on the East Asian Winter Monsoon |
title_short |
Tropical impact on the East Asian Winter Monsoon |
title_full |
Tropical impact on the East Asian Winter Monsoon |
title_fullStr |
Tropical impact on the East Asian Winter Monsoon |
title_full_unstemmed |
Tropical impact on the East Asian Winter Monsoon |
title_sort |
tropical impact on the east asian winter monsoon |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/24624/ https://oceanrep.geomar.de/id/eprint/24624/1/GG_EAWM_EGU_13.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/24624/1/GG_EAWM_EGU_13.pdf Gollan, G. , Greatbatch, R. J. and Jung, T. (2013) Tropical impact on the East Asian Winter Monsoon . [Talk] In: EGU General Assembly 2013. , 07.-12.04.2013, Vienna, Austria . |
_version_ |
1766194751461130240 |