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Southern hemisphere sea‐level pressure data: An analysis and reconstructions back to 1951 and 1911
Author(s) -
Jones P. D.
Publication year - 1991
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.3370110603
Subject(s) - southern hemisphere , climatology , westerlies , geology , anticyclone , northern hemisphere , subtropics , data set , sea level , oceanography , statistics , mathematics , fishery , biology
Abstract The reliability of Australian (1972–1985) and NOTOS (1951–1962) gridded monthly mean sea‐level pressure data sets over the Southern Hemisphere (15‐60°S) is examined by comparison with station mean sea‐level pressure data from 77 sites. The station data are used in a principal components regression scheme to reconstruct gridded data back to 1951 and to 1911 using different sets of station data. The reconstructions are best near the continental areas but useful reconstructions are possible near the many ocean islands that have data since 1951. The reconstructions that extend back to 1911 are only useful near the continental areas and over the south‐western Pacific Ocean. The reconstructions are used to compare the Australian, NOTOS data sets and a New Zealand gridded set available for the Southern Hemisphere (60°E‐150°W) since 1954, and to assess changes in the strength of the three subtropical anticyclones and the southern westerlies since 1951.