The Impact of Climate Change on Severity, Duration and Magnitude of Drought using SPI and RDI in Semnan Region

Journal Title: Journal of Drought and Climate change Research (JDCR) - Year 2023, Vol 1, Issue 1

Abstract

Drought monitoring is an essential component of drought risk management. This paper presents characteristics of droughts simulated by 13 global climate models (GCMs) under two greenhouse gases emission (RCP4.5 and RCP8.5) at three levels of risk (0.25, 0.50, and 0.75) in the Semnan region. For this purpose, the Reconnaissance Drought Index (RDI) and standardized precipitation index (SPI) were calculated for three future periods 2010-2039, 2040-2069, and 2070-2099 at different time scales. The calculated RDI and SPI for different climate change scenarios were compared with those of the past period (1965-2009). The results revealed that as compared to the RCP4.5 scenario, in the RCP8.5 scenario, there will be more dry and wet periods. Drought duration predicted by RDI index compared to SPI index (at 1-year and 3-mon time scales), under both emission scenarios in the future period (2010-2099) has decreased compared to the past period (1965-2009), but the number of droughts has increased. Additionally, increases and decreases in the drought magnitude and severity were found at time scales 3-month and annually, respectively. These results provide observational evidence for the increasing risk of droughts as anthropogenic global warming progresses.

Authors and Affiliations

Mahdi Delghandi; Sanaz Joorablou; Zahra Ganji Nowroozi

Keywords

Related Articles

Efficiency of Machine Learning Techniques for Predicting Vapor Pressure Deficit in Arid and Semi-Arid Regions (Case Study: South Khorasan Province)

Climate change, as one of the global challenges of the present century, has profound impacts on water resources and agriculture. The increase in temperature and decrease in rainfall in arid and semi-arid regions have mad...

The Use of Time Series and Artificial Neural Networks in Drought Simulation (Case Study: Bojnourd City)

Drought is a climatic phenomenon and is actually considered a part of the climate of a region. Drought has a hidden nature and the duration of its occurrence is long, and its effects appear in a non-structural way and as...

Investigating the Effect of Precipitation Series Decomposition on the Simulation of Electrical Conductivity of River Flow (Case Study: Eskandari Sub-Basin)

In this study, the effect of time series decomposition of precipitation in the simulation of electrical conductivity values of the surface water in Eskandari sub-basin in the northwest of the of Zayandeh Rood Dam Basin i...

Monitoring Changes in Rice Cultivation Area using Multi-Temporal Satellite images (Case Study: Beiranshahr Region, Iran)

The cultivation of crops with high water demand in arid and semi-arid regions can seriously threaten water resources. In the Beiranshahr region, western Iran, based on various factors, including high profit and short gro...

The Feasibility of Underground Greenhouses Construction as an Action to Reduce Climate Change Impacts

In this study, as an action to reduce energy consumption and mitigate climate change impacts, creating a safer greenhouse structure, reducing the cost of construction and better management of greenhouses, the use of unde...

Download PDF file
  • EP ID EP754875
  • DOI https://doi.org/10.22077/jdcr.2023.5909.1004
  • Views 30
  • Downloads 0

How To Cite

Mahdi Delghandi; Sanaz Joorablou; Zahra Ganji Nowroozi (2023). The Impact of Climate Change on Severity, Duration and Magnitude of Drought using SPI and RDI in Semnan Region. Journal of Drought and Climate change Research (JDCR), 1(1), -. https://europub.co.uk/articles/-A-754875