Projection of Climate Changes in Yazd Province in both the Near and Distant Future using SDSM Linear Multiple Model

Document Type : Original Article

Authors

1 Assistant Professor, Faculty of Natural Resources, Department of Ecological Engineering, University of Jiroft, Jiroft, Iran.

2 Assistant Professor, Faculty of Literature and Humanities, Department of Geography, University of Jiroft, Jiroft, Iran.

3 Ph.D., Faculty of Natural Resources, University of Hormozgan, Bandar Abbas, Iran.

4 PhD student, Faculty of Natural Resources, University of Tehran, Karaj, Iran

Abstract

In recent decades, the increase in temperature has caused widespread climate change all over the world, especially in arid and semi-arid regions of Iran and Yazd province. The purpose of this study is to project climate change in Yazd province using the CanESM2 model and new emission scenarios (RCP) during 2021-2050 (near future) and 2051-2080 (distant future) and to study the trend of changes in the baseline period using the Mann-Kendall test. The statistical indices of R2, RMSE, and NSE were used to evaluate the performance of the CanESM2 model. According to the results, the model had an appropriate performance for projecting precipitation and temperature in the future period and was classified into good and very good classes in terms of capability. Investigating the trend of the annual change of temperature and precipitation in the baseline period showed that the temperature had an increasing trend under most scenarios and stations, while the trend of the change of precipitation was no significant. The results of temperature changes in Yazd province indicated an increase of 2.2, 1.2, and 2.5 °C during 2021-2050 and 2.28, 3.19, and 4.77°C during 2051-2080 under RCP2, RCP4.5, and RCP8.5 scenarios, respectively. Changes in precipitation in Yazad province during the winter season showed a decrease in precipitation by 32, 26, and 34% during 2021-2050 and by 32, 32, and 5% during 2051-2080 under RCP2.6, RCP4.5, and RCP8.5 scenarios, respectively.

Keywords

References

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Desert Management
Volume 9, Issue 2 - Serial Number 18
7 Articles
September 2021
Pages 31-46

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History

  • Receive Date: 10 May 2021
  • Revise Date: 23 June 2021
  • Accept Date: 30 June 2021

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