Open AccessChanges and trends in maximum, minimum and mean temperature series in Iran
Author(s) -
Ghasemi Ahmad Reza
Publication year - 2015
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl2.569
Subject(s) - climatology , maximum temperature , climate change , mean radiant temperature , environmental science , global warming , series (stratigraphy) , spring (device) , atmospheric sciences , geology , thermodynamics , oceanography , physics , paleontology
Abstract The variations of Iran temperature is studied during 1961–2010. Mann–Kendall tests show a general dominating positive temperature trend over most parts of Iran with the rate of change varying from 0.09 to 0.38 °C decade −1 . Also, the minimum temperature increase (0.34 °C decade −1 ) is greater than maximum temperature (0.15 °C decade −1 ). A more definite trend of warming occurs in summer and spring than winter and autumn. Moreover, the results show that the warm climate regions in Iran are warming at a higher rate than cold climate regions. Pettitt's test also suggesting the abrupt upward change in mean annual temperature, occurs in the late 1990s.