Observational evidence of a warm ocean current preceding a winter teleconnection pattern in the northwestern Pacific

Naoki Hirose, Kazuya Nishimura, Masaru Yamamoto

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The role of the extratropical ocean in climate remains unclear due to the complexities in air-sea interaction processes. We have found robust evidence for the Tsushima Warm Current (TWC) preceding the western Pacific (WP) teleconnection pattern by conducting an analysis over the past 30 years. The WP index in winter sharply succeeds the volume transport of the TWC in autumn, but rather smoothly connects with the El Niño indices, indicating a considerable role of the ocean current in the climate system. Correlation patterns of seasonal precipitation over the Japanese Islands are also consistent with this relationship. The significant lead-lag correlations with the coherent structures of surface temperature indicate ocean-to-atmosphere feedback in which the interannual variation of the wind-driven current, represented by the TWC transport, influences the regional climate conditions associated with the WP pattern in winter.

Original languageEnglish
Article numberL09705
JournalGeophysical Research Letters
Volume36
Issue number9
DOIs
Publication statusPublished - May 16 2009

Fingerprint

ocean currents
teleconnection
winter
wind-driven current
climate
volume transport
air-sea interaction
ocean
climate conditions
regional climate
annual variation
oceans
surface temperature
autumn
air water interactions
atmosphere
annual variations
time lag
conduction
atmospheres

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

@article{d29ba1f47c444dba804c16f1315828cc,
title = "Observational evidence of a warm ocean current preceding a winter teleconnection pattern in the northwestern Pacific",
abstract = "The role of the extratropical ocean in climate remains unclear due to the complexities in air-sea interaction processes. We have found robust evidence for the Tsushima Warm Current (TWC) preceding the western Pacific (WP) teleconnection pattern by conducting an analysis over the past 30 years. The WP index in winter sharply succeeds the volume transport of the TWC in autumn, but rather smoothly connects with the El Ni{\~n}o indices, indicating a considerable role of the ocean current in the climate system. Correlation patterns of seasonal precipitation over the Japanese Islands are also consistent with this relationship. The significant lead-lag correlations with the coherent structures of surface temperature indicate ocean-to-atmosphere feedback in which the interannual variation of the wind-driven current, represented by the TWC transport, influences the regional climate conditions associated with the WP pattern in winter.",
author = "Naoki Hirose and Kazuya Nishimura and Masaru Yamamoto",
year = "2009",
month = "5",
day = "16",
doi = "10.1029/2009GL037448",
language = "English",
volume = "36",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "9",

}

TY - JOUR

T1 - Observational evidence of a warm ocean current preceding a winter teleconnection pattern in the northwestern Pacific

AU - Hirose, Naoki

AU - Nishimura, Kazuya

AU - Yamamoto, Masaru

PY - 2009/5/16

Y1 - 2009/5/16

N2 - The role of the extratropical ocean in climate remains unclear due to the complexities in air-sea interaction processes. We have found robust evidence for the Tsushima Warm Current (TWC) preceding the western Pacific (WP) teleconnection pattern by conducting an analysis over the past 30 years. The WP index in winter sharply succeeds the volume transport of the TWC in autumn, but rather smoothly connects with the El Niño indices, indicating a considerable role of the ocean current in the climate system. Correlation patterns of seasonal precipitation over the Japanese Islands are also consistent with this relationship. The significant lead-lag correlations with the coherent structures of surface temperature indicate ocean-to-atmosphere feedback in which the interannual variation of the wind-driven current, represented by the TWC transport, influences the regional climate conditions associated with the WP pattern in winter.

AB - The role of the extratropical ocean in climate remains unclear due to the complexities in air-sea interaction processes. We have found robust evidence for the Tsushima Warm Current (TWC) preceding the western Pacific (WP) teleconnection pattern by conducting an analysis over the past 30 years. The WP index in winter sharply succeeds the volume transport of the TWC in autumn, but rather smoothly connects with the El Niño indices, indicating a considerable role of the ocean current in the climate system. Correlation patterns of seasonal precipitation over the Japanese Islands are also consistent with this relationship. The significant lead-lag correlations with the coherent structures of surface temperature indicate ocean-to-atmosphere feedback in which the interannual variation of the wind-driven current, represented by the TWC transport, influences the regional climate conditions associated with the WP pattern in winter.

UR - http://www.scopus.com/inward/record.url?scp=68249156608&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=68249156608&partnerID=8YFLogxK

U2 - 10.1029/2009GL037448

DO - 10.1029/2009GL037448

M3 - Article

AN - SCOPUS:68249156608

VL - 36

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 9

M1 - L09705

ER -