Open AccessComplex assessment of variability for the sea surface temperature in the North-West Pacific in July-September 1950-2014
Author(s) -
Т. А. Шатилина,
Гурам Шалвович Цициашвили,
Т. В. Радченкова
Publication year - 2016
Publication title -
izvestiâ tinro/izvestiâ tihookeanskogo naučno-issledovatelʹskogo rybohozâjstvennogo centra
Language(s) - English
Resource type - Journals
eISSN - 2658-5510
pISSN - 1606-9919
DOI - 10.26428/1606-9919-2016-184-120-134
Subject(s) - climatology , anticyclone , sea surface temperature , subtropics , subtropical ridge , environmental science , north pacific high , series (stratigraphy) , monsoon , atmospheric circulation , pacific decadal oscillation , oceanography , atmospheric sciences , geography , geology , precipitation , meteorology , paleontology , fishery , biology
Trend significance is evaluated and periodicities are revealed for time series of the sea surface temperature in the North-West Pacific. The dominant periods are selected using Fourier method under the assumption of linear trend existing over sufficiently large fluctuations. On the background of rapid warming in the 1983-2014, increasing fluctuations of summer SST were observed, with 7-year cycle domination, which were gradually shifted to August-September. Patterns of atmospheric circulation preceding to events of extreme thermal regime in summer are identified using the method of interval recognition: the extreme warm thermal regimes are formed mainly by subtropical anticyclones having a tendency to strengthen, and the extreme cold regimes are conditioned by strengthening of summer monsoon in its first stage.