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Updated: Oct 25, 2025

A Protocol for Conducting Rainfall Simulation to Study Soil Runoff
Published on: April 3, 2014
21st century precipitation and monsoonal shift over Pakistan and Upper Indus Basin (UIB) using high-resolution
Shaukat Ali1, Michelle S Reboita2, Rida Sehar Kiani3
1Global Change Impact Studies Centre (GCISC), Ministry of Climate Change, Islamabad, Pakistan; Earth System Physics, The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy.
Abstract:
There is research evidence that due to global warming, global precipitation and monsoon area have shown a shift which needs to be analyzed at regional scale. This study analyses future precipitation and monsoon spatial shift over Pakistan and Upper Indus Basin (UIB) based on latest Coordinated Regional Climate Downscaling Experiment - Coordinated Output for Regional Evaluations (CORDEX-CORE) high resolution projections (25 km) for the South Asian domain. Three global climate models from Coupled Model Intercomparison Project Phase 5 (CMIP5) (MIROC5, NorESM1-M and MPI-ESM-MR) provided the lateral boundary conditions for the Regional Climate Model (RegCM4) under Representative Concentration Pathways 2.6 (RCP2.6) and RCP8.5 scenarios. Results indicate that JJA precipitation over Upper Indus Basin (UIB which also includes North Pakistan) is projected to increase more under RCP8.5 and less under RCP2.6 while for Pakistan it shows slightly increase (decrease) in RCP2.6 (RCP8.5). The results also show a projected expansion in monsoon area in UIB and northward shift of MCR which corresponds with future precipitation changes in the area and hence indicate the penetration of monsoon system over UIB under higher warming scenario. The changes in monsoon precipitation and domain are related to the changes in wind circulation patterns at 850 hPa and 200 hPa atmospheric levels.
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