North Pacific Gyre Oscillation and the occurrence of western North Pacific tropical cyclones

This study examines links between the North Pacific Gyre Oscillation (NPGO) and the occurrence of tropical cyclones (TCs) in the western North Pacific (WNP) at both interannual and decadal scales. The major findings are summarized as follows: (1) NPGO makes significant impacts on the WNP TC frequenc...

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Main Authors: Zhang, W., Leung, Yee-Hong, Min, J.
Format: Journal Article
Published: American Geophysical Union 2013
Online Access:http://hdl.handle.net/20.500.11937/55855
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author Zhang, W.
Leung, Yee-Hong
Min, J.
author_facet Zhang, W.
Leung, Yee-Hong
Min, J.
author_sort Zhang, W.
building Curtin Institutional Repository
collection Online Access
description This study examines links between the North Pacific Gyre Oscillation (NPGO) and the occurrence of tropical cyclones (TCs) in the western North Pacific (WNP) at both interannual and decadal scales. The major findings are summarized as follows: (1) NPGO makes significant impacts on the WNP TC frequency at both interannual and decadal time scales. The impacts of NPGO on the TC activity are more profound than those exerted by the Pacific Decadal Oscillation and the El Niño Southern Oscillation. (2) Niño 3 plays a more important role than Niño 3.4 and Niño 4 in modulating the decadal WNP TC activity. (3) Positive low-level relative vorticity and weak zonal vertical wind shear are responsible for the increase in the WNP TC activity in negative NPGO phases. This study indicates that the NPGO and Niño 3 indices should be key factors for building a scheme for decadal prediction of occurrences of WNP TCs. Key Points NPGO makes significant impacts on the inter-annual and decadal WNP TC frequency The impacts of NPGO on TC activity are more profound than those by PDO and ENSO Nino 3 plays a more important role in decadal WNP TCs than Nino 3.4 and Nino 4 ©2013. American Geophysical Union. All Rights Reserved.
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spelling curtin-20.500.11937-558552017-09-13T16:10:52Z North Pacific Gyre Oscillation and the occurrence of western North Pacific tropical cyclones Zhang, W. Leung, Yee-Hong Min, J. This study examines links between the North Pacific Gyre Oscillation (NPGO) and the occurrence of tropical cyclones (TCs) in the western North Pacific (WNP) at both interannual and decadal scales. The major findings are summarized as follows: (1) NPGO makes significant impacts on the WNP TC frequency at both interannual and decadal time scales. The impacts of NPGO on the TC activity are more profound than those exerted by the Pacific Decadal Oscillation and the El Niño Southern Oscillation. (2) Niño 3 plays a more important role than Niño 3.4 and Niño 4 in modulating the decadal WNP TC activity. (3) Positive low-level relative vorticity and weak zonal vertical wind shear are responsible for the increase in the WNP TC activity in negative NPGO phases. This study indicates that the NPGO and Niño 3 indices should be key factors for building a scheme for decadal prediction of occurrences of WNP TCs. Key Points NPGO makes significant impacts on the inter-annual and decadal WNP TC frequency The impacts of NPGO on TC activity are more profound than those by PDO and ENSO Nino 3 plays a more important role in decadal WNP TCs than Nino 3.4 and Nino 4 ©2013. American Geophysical Union. All Rights Reserved. 2013 Journal Article http://hdl.handle.net/20.500.11937/55855 10.1002/grl.50955 American Geophysical Union unknown
spellingShingle Zhang, W.
Leung, Yee-Hong
Min, J.
North Pacific Gyre Oscillation and the occurrence of western North Pacific tropical cyclones
title North Pacific Gyre Oscillation and the occurrence of western North Pacific tropical cyclones
title_full North Pacific Gyre Oscillation and the occurrence of western North Pacific tropical cyclones
title_fullStr North Pacific Gyre Oscillation and the occurrence of western North Pacific tropical cyclones
title_full_unstemmed North Pacific Gyre Oscillation and the occurrence of western North Pacific tropical cyclones
title_short North Pacific Gyre Oscillation and the occurrence of western North Pacific tropical cyclones
title_sort north pacific gyre oscillation and the occurrence of western north pacific tropical cyclones
url http://hdl.handle.net/20.500.11937/55855