Detection and analysis of the trend of climate change (precipitation and temperature) within the boundaries of Sari

Given the impact that climate change has on the planet, which is currently one of the most important challenges facing the international community, efforts to understand climate change events as much as possible are certain. The purpose of this study is to detect and analyze the trend of climate change, especially climatic elements of precipitation and temperature in the city of Sari in Mazandaran province. 

The method of this study was to analyze the statistical process of climatic factors of precipitation and temperature at 4 stations (Sari, Amol, Gharakhil and Babolsar) in the period of 20 and 30 years (1987-2017) using non-parametric Mann-Kendall test and climate sensing software of the Meteorological Organization of Iran. Also, to determine the location of climate change more precisely, Arc statistics was used in Arc GIS software.

The Kendall test showed that 3 stations (Gharakhil, Babolsar and Sari) had a significant leakage trend in terms of temperature rise over the 30-year period with U + (3.87, 3.80, 1.75). But it does not show significant trends in precipitation. The Climate Change Detector also emphasizes that the temperature rise at these stations is tangible and this has led to climate change in this area. Earth statistic test also revealed that most climate change occurred in the area of Sari and changed from a mild to moderate state.

The area under study has undergone severe climate change, and this climate change directly affects the water balance of the region, increasing water requirements, decreasing soil moisture, vegetation density, rangeland capacity and agricultural products, and considering that groundwater resources are the most important source of supply Water is needed in different parts of the region, it also reduces the level of water table and reduces the quality of groundwater resources. In addition, this means reducing the frequency of precipitation, increasing rainfall, soil erosion and natural resources.