1404 JOURNAL OF CLIMATE VOLUME 16 Covariations of Sea Surface Temperature and Wind over the Kuroshio and Its Extension: Evidence for Ocean-to-Atmosphere Feedback*
Satellite microwave measurements are analyzed, revealing robust covariability in sea surface temperature (SST) and wind speed over the Kuroshio Extension (KE) east of Japan. Ocean hydrodynamic instabilities cause the KE to meander and result in large SST variations. Increased (reduced) wind speeds a...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.145.7697 2023-05-15T13:15:01+02:00 1404 JOURNAL OF CLIMATE VOLUME 16 Covariations of Sea Surface Temperature and Wind over the Kuroshio and Its Extension: Evidence for Ocean-to-Atmosphere Feedback* Masami Nonaka Shang-ping Xie The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.7697 http://iprc.soest.hawaii.edu/~xie/nona_KE03.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.7697 http://iprc.soest.hawaii.edu/~xie/nona_KE03.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://iprc.soest.hawaii.edu/~xie/nona_KE03.pdf text 2002 ftciteseerx 2016-01-07T15:08:04Z Satellite microwave measurements are analyzed, revealing robust covariability in sea surface temperature (SST) and wind speed over the Kuroshio Extension (KE) east of Japan. Ocean hydrodynamic instabilities cause the KE to meander and result in large SST variations. Increased (reduced) wind speeds are found to be associated with warm (cold) SST anomalies. This positive SST–wind correlation in KE is confirmed by in situ buoy measurements and is consistent with a vertical shear adjustment mechanism. Namely, an increase in SST reduces the static stability of the near-surface atmosphere, intensifying the vertical turbulence mixing and bringing fastmoving air from aloft to the sea surface. South of Japan, the Kuroshio is known to vary between nearshore and offshore paths. These paths are very persistent and can last for months to years. As the Kuroshio shifts its path, coherent wind changes are detected from satellite data. In particular, winds are high south of Tokyo when the Kuroshio takes the nearshore path while they are greatly reduced when this warm current leaves the coast in the offshore path. The positive SST–wind correlation over the strong Kuroshio Current and its extension is opposite to the negative one often observed in regions of weak currents such as south of the Aleutian low. The latter correlation is considered to be indicative of atmosphere-to-ocean forcing. 1. Text aleutian low Unknown |
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ftciteseerx |
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English |
description |
Satellite microwave measurements are analyzed, revealing robust covariability in sea surface temperature (SST) and wind speed over the Kuroshio Extension (KE) east of Japan. Ocean hydrodynamic instabilities cause the KE to meander and result in large SST variations. Increased (reduced) wind speeds are found to be associated with warm (cold) SST anomalies. This positive SST–wind correlation in KE is confirmed by in situ buoy measurements and is consistent with a vertical shear adjustment mechanism. Namely, an increase in SST reduces the static stability of the near-surface atmosphere, intensifying the vertical turbulence mixing and bringing fastmoving air from aloft to the sea surface. South of Japan, the Kuroshio is known to vary between nearshore and offshore paths. These paths are very persistent and can last for months to years. As the Kuroshio shifts its path, coherent wind changes are detected from satellite data. In particular, winds are high south of Tokyo when the Kuroshio takes the nearshore path while they are greatly reduced when this warm current leaves the coast in the offshore path. The positive SST–wind correlation over the strong Kuroshio Current and its extension is opposite to the negative one often observed in regions of weak currents such as south of the Aleutian low. The latter correlation is considered to be indicative of atmosphere-to-ocean forcing. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Masami Nonaka Shang-ping Xie |
spellingShingle |
Masami Nonaka Shang-ping Xie 1404 JOURNAL OF CLIMATE VOLUME 16 Covariations of Sea Surface Temperature and Wind over the Kuroshio and Its Extension: Evidence for Ocean-to-Atmosphere Feedback* |
author_facet |
Masami Nonaka Shang-ping Xie |
author_sort |
Masami Nonaka |
title |
1404 JOURNAL OF CLIMATE VOLUME 16 Covariations of Sea Surface Temperature and Wind over the Kuroshio and Its Extension: Evidence for Ocean-to-Atmosphere Feedback* |
title_short |
1404 JOURNAL OF CLIMATE VOLUME 16 Covariations of Sea Surface Temperature and Wind over the Kuroshio and Its Extension: Evidence for Ocean-to-Atmosphere Feedback* |
title_full |
1404 JOURNAL OF CLIMATE VOLUME 16 Covariations of Sea Surface Temperature and Wind over the Kuroshio and Its Extension: Evidence for Ocean-to-Atmosphere Feedback* |
title_fullStr |
1404 JOURNAL OF CLIMATE VOLUME 16 Covariations of Sea Surface Temperature and Wind over the Kuroshio and Its Extension: Evidence for Ocean-to-Atmosphere Feedback* |
title_full_unstemmed |
1404 JOURNAL OF CLIMATE VOLUME 16 Covariations of Sea Surface Temperature and Wind over the Kuroshio and Its Extension: Evidence for Ocean-to-Atmosphere Feedback* |
title_sort |
1404 journal of climate volume 16 covariations of sea surface temperature and wind over the kuroshio and its extension: evidence for ocean-to-atmosphere feedback* |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.7697 http://iprc.soest.hawaii.edu/~xie/nona_KE03.pdf |
genre |
aleutian low |
genre_facet |
aleutian low |
op_source |
http://iprc.soest.hawaii.edu/~xie/nona_KE03.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.145.7697 http://iprc.soest.hawaii.edu/~xie/nona_KE03.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766266510123204608 |