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Spatio‐temporal patterns of drought in Morocco
Author(s) -
Chbouki Nabil,
Stockton Charles W.,
Myers Donald E.
Publication year - 1995
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.3370150205
Subject(s) - climatology , cyclogenesis , atmospheric circulation , common spatial pattern , spatial ecology , dendrochronology , geology , environmental science , geography , mathematics , cyclone (programming language) , ecology , paleontology , statistics , field programmable gate array , computer science , computer hardware , biology
Past climatic moisture anomalies can be reconstructed from climatically sensitive tree‐ring chronologies of Cedrus atlantica in Morocco. A map‐pattern technique was utilized to derive 10 patterns of variability for the period 1845–1974. The individual patterns were examined, in space using geostatistical techniques, and in time using correlation coefficients. The results indicate a clear alternation of favourable‐unfavourable climatic regimes lasting 20–25 years. The spatial extent of the climatic moisture anomalies can be explained by a combination of three factors of the atmospheric circulation related to the Azores High, local cyclogenesis, and north‐eastern perturbations.