Effects of Tropical Cyclones on Ocean Heat Transport in a High-Resolution Coupled General Circulation Model
In this paper the interplay between tropical cyclones (TCs) and the Northern Hemispheric ocean heat transport (OHT) is investigated. In particular, results from a numerical simulation of the twentieth-century and twenty-first-century climates, following the Intergovernmental Panel on Climate Change...
Published in: | Journal of Climate |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/11585/789421 https://doi.org/10.1175/2011JCLI4104.1 |
id |
ftunibolognairis:oai:cris.unibo.it:11585/789421 |
---|---|
record_format |
openpolar |
spelling |
ftunibolognairis:oai:cris.unibo.it:11585/789421 2024-09-15T18:35:37+00:00 Effects of Tropical Cyclones on Ocean Heat Transport in a High-Resolution Coupled General Circulation Model Scoccimarro E Gualdi S Bellucci A Sanna A Fogli PG Manzini E Vichi M Oddo P Navarra A Scoccimarro E Gualdi S Bellucci A Sanna A Fogli PG Manzini E Vichi M Oddo P Navarra A 2011 ELETTRONICO http://hdl.handle.net/11585/789421 https://doi.org/10.1175/2011JCLI4104.1 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000294490600010 volume:24 issue:16 firstpage:4368 lastpage:4384 numberofpages:17 journal:JOURNAL OF CLIMATE http://hdl.handle.net/11585/789421 doi:10.1175/2011JCLI4104.1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-80052618190 Tropical cyclone climate info:eu-repo/semantics/article 2011 ftunibolognairis https://doi.org/10.1175/2011JCLI4104.1 2024-06-24T14:24:59Z In this paper the interplay between tropical cyclones (TCs) and the Northern Hemispheric ocean heat transport (OHT) is investigated. In particular, results from a numerical simulation of the twentieth-century and twenty-first-century climates, following the Intergovernmental Panel on Climate Change (IPCC) twentieth-century run (20C3M) and A1B scenario protocols, respectively, have been analyzed. The numerical simulations have been performed using a state-of-the-art global atmosphere-ocean-sea ice coupled general circulation model (CGCM) with relatively high-resolution (T159) in the atmosphere. The CGCM skill in reproducing a realistic TC climatology has been assessed by comparing the model results from the simulation of the twentieth century with available observations. The model simulates tropical cyclone-like vortices with many features similar to the observed TCs. Specifically, the simulated TCs exhibit realistic structure, geographical distribution, and interannual variability, indicating that the model is able to capture the basic mechanisms linking the TC activity with the large-scale circulation. The cooling of the surface ocean observed in correspondence of the TCs is well simulated by the model. TC activity is shown to significantly increase the poleward OHT out of the tropics and decrease the poleward OHT from the deep tropics on short time scales. This effect, investigated by looking at the 100 most intense Northern Hemisphere TCs, is strongly correlated with the TC-induced momentum flux at the ocean surface, where the winds associated with the TCs significantly weaken (strengthen) the trade winds in the 5 degrees-18 degrees N (18 degrees-30 degrees N) latitude belt. However, the induced perturbation does not impact the yearly averaged OHT. The frequency and intensity of the TCs appear to be substantially stationary through the entire 1950-2069 simulated period, as does the effect of the TCs on the OHT. Article in Journal/Newspaper Sea ice IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Journal of Climate 24 16 4368 4384 |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
Tropical cyclone climate |
spellingShingle |
Tropical cyclone climate Scoccimarro E Gualdi S Bellucci A Sanna A Fogli PG Manzini E Vichi M Oddo P Navarra A Effects of Tropical Cyclones on Ocean Heat Transport in a High-Resolution Coupled General Circulation Model |
topic_facet |
Tropical cyclone climate |
description |
In this paper the interplay between tropical cyclones (TCs) and the Northern Hemispheric ocean heat transport (OHT) is investigated. In particular, results from a numerical simulation of the twentieth-century and twenty-first-century climates, following the Intergovernmental Panel on Climate Change (IPCC) twentieth-century run (20C3M) and A1B scenario protocols, respectively, have been analyzed. The numerical simulations have been performed using a state-of-the-art global atmosphere-ocean-sea ice coupled general circulation model (CGCM) with relatively high-resolution (T159) in the atmosphere. The CGCM skill in reproducing a realistic TC climatology has been assessed by comparing the model results from the simulation of the twentieth century with available observations. The model simulates tropical cyclone-like vortices with many features similar to the observed TCs. Specifically, the simulated TCs exhibit realistic structure, geographical distribution, and interannual variability, indicating that the model is able to capture the basic mechanisms linking the TC activity with the large-scale circulation. The cooling of the surface ocean observed in correspondence of the TCs is well simulated by the model. TC activity is shown to significantly increase the poleward OHT out of the tropics and decrease the poleward OHT from the deep tropics on short time scales. This effect, investigated by looking at the 100 most intense Northern Hemisphere TCs, is strongly correlated with the TC-induced momentum flux at the ocean surface, where the winds associated with the TCs significantly weaken (strengthen) the trade winds in the 5 degrees-18 degrees N (18 degrees-30 degrees N) latitude belt. However, the induced perturbation does not impact the yearly averaged OHT. The frequency and intensity of the TCs appear to be substantially stationary through the entire 1950-2069 simulated period, as does the effect of the TCs on the OHT. |
author2 |
Scoccimarro E Gualdi S Bellucci A Sanna A Fogli PG Manzini E Vichi M Oddo P Navarra A |
format |
Article in Journal/Newspaper |
author |
Scoccimarro E Gualdi S Bellucci A Sanna A Fogli PG Manzini E Vichi M Oddo P Navarra A |
author_facet |
Scoccimarro E Gualdi S Bellucci A Sanna A Fogli PG Manzini E Vichi M Oddo P Navarra A |
author_sort |
Scoccimarro E |
title |
Effects of Tropical Cyclones on Ocean Heat Transport in a High-Resolution Coupled General Circulation Model |
title_short |
Effects of Tropical Cyclones on Ocean Heat Transport in a High-Resolution Coupled General Circulation Model |
title_full |
Effects of Tropical Cyclones on Ocean Heat Transport in a High-Resolution Coupled General Circulation Model |
title_fullStr |
Effects of Tropical Cyclones on Ocean Heat Transport in a High-Resolution Coupled General Circulation Model |
title_full_unstemmed |
Effects of Tropical Cyclones on Ocean Heat Transport in a High-Resolution Coupled General Circulation Model |
title_sort |
effects of tropical cyclones on ocean heat transport in a high-resolution coupled general circulation model |
publishDate |
2011 |
url |
http://hdl.handle.net/11585/789421 https://doi.org/10.1175/2011JCLI4104.1 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000294490600010 volume:24 issue:16 firstpage:4368 lastpage:4384 numberofpages:17 journal:JOURNAL OF CLIMATE http://hdl.handle.net/11585/789421 doi:10.1175/2011JCLI4104.1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-80052618190 |
op_doi |
https://doi.org/10.1175/2011JCLI4104.1 |
container_title |
Journal of Climate |
container_volume |
24 |
container_issue |
16 |
container_start_page |
4368 |
op_container_end_page |
4384 |
_version_ |
1810478810095681536 |