Irrigation eﬀects on hydro-climatic change: Basin-wise water balance-constrained quantiﬁcation and cross-regional comparison
2014 (English)In: Surveys in geophysics, ISSN 0169-3298, E-ISSN 1573-0956, Vol. 35, no 3, 879-895 p.Article in journal (Refereed) Published
Hydro-climatic changes driven by human land and water use, including water use for irrigation, may be diﬃcult to distinguish fromthe eﬀects of global, natural and anthropogenic climate change. This paper quantiﬁes and compares the hydro-climatic change eﬀects ofirrigation using a data-driven, basin-wise quantiﬁcation approach in two diﬀerent irrigated world regions: the Aral Sea drainage basinin Central Asia, and the Indian Mahanadi River Basin draining into the Bay of Bengal. Results show that irrigation-driven changesin evapotranspiration and latent heat ﬂuxes and associated temperature changes at the land surface may be greater in regions withsmall relative irrigation impacts on water availability in the landscape (here represented by the MRB) than in regions with severe suchimpacts (here represented by the Aral region). Diﬀerent perspectives on the continental part of Earth’s hydrological cycle may thus implydiﬀerent importance assessment of various drivers and impacts of hydro-climatic change. Regardless of perspective, however, actualbasin-wise water balance constraints should be accounted to realistically understand and accurately quantify continental water change.
Place, publisher, year, edition, pages
2014. Vol. 35, no 3, 879-895 p.
hydro-climatic change, irrigation, evapotranspiration, surface temperature, hydrological cycle, hydrological catchment, Aral Sea, India
Climate Research Physical Geography
Research subject Physical Geography
IdentifiersURN: urn:nbn:se:su:diva-87957DOI: 10.1007/s10712-013-9223-5ISI: 000333700700018OAI: oai:DiVA.org:su-87957DiVA: diva2:608309