2023-01-01 RUSSIAN METEOROLOGY AND HYDROLOGY 2023 48(卷), 1(期), (53-62页)
In this study, monthly meteorological parameters of temperature, precipitation, and wind speed re corded at 104 synoptic weather stations scattered across Iran were analyzed to con struct annual time series of the meteorological data for a 30-year period (1988-2017) using the Mann-Kend all test and the Sen's slopeestimator. Based on the de Martonnearidity index (IDM) classification, Iran climate is mostly categorized as dry and semi-dry. The results indicated annual temperature significantly increased at about 61% of stations and annual precipitation significantly de creased at 21% of stations (at the 95% and 99% significance level). The de cline in precipitation occurred in mostly the dry (27%) and semi-dry (21%) regions of Iran. Approximately half of the stations experienced significant in creases in wind speed with arid areas experiencing its broadest increase. Prediction of future impacts of cli mate change is needed for this re gion to mitigate negative effects.