Forecast Comparative of Rainfall and Temperature in Kerman County Using LARS-WG6 Models

Document Type : Research Article

Authors

1 MSc Watershed Science and Engineering, Faculty of Natural Resource, University of Tehran

2 Professor, Faculty of Natural Resource, University of Tehran

3 Msc Student of Nature Engineering, Faculty of New Sciences and Technologies, University of Tehran

Abstract

Assessment of climate change in arid and semiarid areas where water crisis is taken it is a matter of special importance. Therefore, the purpose of this study was to investigate climate change forecasting in Kerman city using general atmospheric circulation models available in LARS-WG6 software (EC-EARTH, GFDL-CM, HadGEM2-ES, MIROC5 and MPI-ESM-MR) under scenarios RCP4.5 and RCP8.5 for the period (2020–2050) and estimate its maximum precipitation over the various return periods during the base period (1961–2010) and future (2020–2050) using the Gamble distribution. The results showed that all five models have the same response in increasing the minimum and maximum temperatures in the city so that the maximum increase in the minimum temperature in GFDL-CM, HadGEM2-ES, MIROC5 and MPI-ESM-MR models is the results were 3.56, 2.73, 2.33 and 2.30 degrees Celsius, respectively. Also, the maximum temperature in the RCP4.5 scenario in May, September, May, September and July, respectively, in EC-EARTH, GFDL-CM, HadGEM2-ES, MIROC5 and MPI-ESM-MR models, respectively, increased by 2.20, 2.82, 2.46, 1.98 and 2.38 °C, respectively. Precipitation decreased by 19.05% and 4.62% in EC-EARTH and MIROC5 models, respectively. The results show that maximum precipitation will occur with higher rainfall in all models except MPI-ESM-MR. Finally, it can be concluded that with increasing return period, the maximum amount of probable precipitation increased under RCP4.5 and RCP8.5 scenarios and was more severe under RCP8.5 scenario.

Keywords

References

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Iranian journal of Ecohydrology
Volume 7, Issue 2
July 2020
Pages 529-538

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History

  • Receive Date: 05 February 2020
  • Revise Date: 11 May 2020
  • Accept Date: 11 May 2020
  • First Publish Date: 21 June 2020
  • Publish Date: 21 June 2020

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