Roles of irrigation and reservoir operations in modulating terrestrial water and energy budgets in the Indian sub?continental river basins

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dc.contributor.author Shah, Harsh L.
dc.contributor.author Zhou, Tian
dc.contributor.author Huang, Maoyi
dc.contributor.author Mishra, Vimal
dc.date.accessioned 2019-12-03T14:21:43Z
dc.date.available 2019-12-03T14:21:43Z
dc.date.issued 2019-12
dc.identifier.citation Shah, Harsh L.; Zhou, Tian; Huang, Maoyi and Mishra, Vimal, “Roles of irrigation and reservoir operations in modulating terrestrial water and energy budgets in the Indian sub‐continental river basins”, Journal of Geophysical Research: Atmospheres, DOI: 10.1029/2019JD031059, vol. 124, no. 23, pp. 12915-12936, Dec. 2019. en_US
dc.identifier.isbn `
dc.identifier.issn 2169-897X
dc.identifier.issn 2169-8996
dc.identifier.uri https://doi.org/10.1029/2019JD031059
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/4987
dc.description.abstract Water management activities affect the terrestrial water cycle by increasing water supply and redistributing the water and energy budgets over irrigated agricultural land. However, the dynamics of how water management activities interact with the terrestrial water and energy budgets have not been sufficiently studied over Indian sub?continental Basins. In this study, we applied a well?evaluated water management model, coupled with a large?scale land surface hydrological model with irrigation and reservoir operation schemes to examine the impacts of irrigation and reservoir operations on terrestrial water and energy budgets over the Indian sub?continental basins. We conducted two simulations: NATURAL (i.e., no irrigation and no reservoirs) and water management scenario (i.e., with irrigation and with reservoir regulations, referred to as MANAGED) over 18 basins from 1951 to 2012. The water management impacts were evaluated by comparing a number of key water and energy budget terms such as evapotranspiration (ET), total runoff (TR), land surface temperature (LST), latent heat flux (LHF), sensible heat flux (SHF), reservoir storage, and discharge. Our results show that water management activities have significant (p?value < 0.05) impacts on ET, LHF, and LST in most of the river basins during the pre?monsoon season (February?May). Comparing to the NATURAL scenario, ET and LHF under the MANAGED scenario are significantly increased in most basins during pre? and post?monsoon seasons, especially in semi?arid regions. Therefore, the influence of irrigation on water and energy budget can be an overestimation in comparison to the constrained irrigation, which is a more realistic scenario.
dc.description.statementofresponsibility by Harsh L. Shah,Tian Zhou, Ning Sun, Maoyi Huang and Vimal Mishra
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.title Roles of irrigation and reservoir operations in modulating terrestrial water and energy budgets in the Indian sub?continental river basins en_US
dc.type Article en_US
dc.relation.journal Journal of Geophysical Research: Atmospheres


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