Fletcher, JK orcid.org/0000-0002-4892-3344, Birch, CE orcid.org/0000-0001-9384-2810, Keane, RJ orcid.org/0000-0002-7506-7352 et al. (2 more authors) (2022) The effect of Ganges river basin irrigation on pre-monsoon rainfall. Quarterly Journal of the Royal Meteorological Society, 148 (747). pp. 3056-3070. ISSN 0035-9009
Abstract
The first experiment studying the effect of irrigation on pre-monsoon rainfall in India using a high-resolution convection-permitting model has been carried out. This study includes both short (3-day) experiments and month-long free-running simulations, enabling investigation of the effect of irrigation on mesoscale circulations and associated rainfall.
In the pre-monsoon, it is found that irrigation increases rainfall in our simulations. Intriguingly, the rainfall increase found in the high-resolution model mostly occurs on the mountains near the irrigation rather than over the irrigated region itself. This is because our applied irrigation is in low-lying regions, and so it enhances the mountain-valley flows leading to enhancement of diurnally driven orographic rainfall. Because Ganges basin irrigation occurs near mountains which already have some of the highest rainfall rates in the world, and which are subject to flash flooding and landslides, this has significant implications for hazards in mountainous regions during the pre-monsoon and early monsoon period.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2021 The Authors. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | convection, India, irrigation, monsoon, precipitation |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > National Centre for Atmos Science (NCAS) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 10 Mar 2023 12:53 |
Last Modified: | 25 Jun 2023 23:16 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/qj.4218 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:197055 |