Impact of climate changes on Arizona State precipitation patterns using high-resolution climatic gridded datasets  

作　　者：Hayder H.Kareem Shahla Abdulqader Nassrullah 

机构地区：[1]Structures and Water Resources Engineering Department,Faculty of Engineering,University of Kufa,Al-Najaf,Iraq [2]Institute of Technology,Middle Technical University,Baghdad,Iraq

出　　处：《Journal of Groundwater Science and Engineering》2025年第1期34-46,共13页地下水科学与工程(英文版)

摘　　要：Climate change significantly affects environment,ecosystems,communities,and economies.These impacts often result in quick and gradual changes in water resources,environmental conditions,and weather patterns.A geographical study was conducted in Arizona State,USA,to examine monthly precipi-tation concentration rates over time.This analysis used a high-resolution 0.50×0.50 grid for monthly precip-itation data from 1961 to 2022,Provided by the Climatic Research Unit.The study aimed to analyze climatic changes affected the first and last five years of each decade,as well as the entire decade,during the specified period.GIS was used to meet the objectives of this study.Arizona experienced 51–568 mm,67–560 mm,63–622 mm,and 52–590 mm of rainfall in the sixth,seventh,eighth,and ninth decades of the second millennium,respectively.Both the first and second five year periods of each decade showed accept-able rainfall amounts despite fluctuations.However,rainfall decreased in the first and second decades of the third millennium.and in the first two years of the third decade.Rainfall amounts dropped to 42–472 mm,55–469 mm,and 74–498 mm,respectively,indicating a downward trend in precipitation.The central part of the state received the highest rainfall,while the eastern and western regions(spanning north to south)had significantly less.Over the decades of the third millennium,the average annual rainfall every five years was relatively low,showing a declining trend due to severe climate changes,generally ranging between 35 mm and 498 mm.The central regions consistently received more rainfall than the eastern and western outskirts.Arizona is currently experiencing a decrease in rainfall due to climate change,a situation that could deterio-rate further.This highlights the need to optimize the use of existing rainfall and explore alternative water sources.

关 键 词：Spatial Analysis Climate Impact Precipitation Rates CRU Dataset GIS Arizona State USA 

分 类 号：P333[天文地球—水文科学] P642.14[水利工程—水文学及水资源]