eprintid: 14339
rev_number: 19
eprint_status: archive
userid: 5
dir: disk0/00/01/43/39
datestamp: 2017-01-26 09:28:46
lastmod: 2021-08-27 17:28:29
status_changed: 2017-01-26 09:28:46
type: article
metadata_visibility: show
creators_name: He, X.
creators_name: Wada, Y.
creators_name: Wanders, N.
creators_name: Sheffield, J.
creators_id: 8940
creators_orcid: 0000-0003-4770-2539
title: Intensification of hydrological drought in California by human water management
ispublished: pub
divisions: prog_wat
abstract: We analyze the contribution of human water management to the intensification and mitigation of hydrological drought over California using the PCR-GLOBWB hydrological model for the period 1979-2014. We demonstrate that considering water management results in more accurate discharge representation. During the severe 2014 drought, water management alleviated the drought deficit by ∼50% in Southern California through reservoir operation during low flow periods. However, human water consumption (mostly irrigation) in the Central Valley increased drought duration and deficit by 50% and 50-100%, respectively. Return level analysis indicates that there is more than 50% chance that the probability of occurrence of an extreme 2014-magnitude drought event was at least doubled under the influence of human activities compared to natural variability. This impact is most significant over the San Joaquin Drainage basin with a 50% and 75% likelihood that the return period is more than 3.5 and 1.5 times larger, respectively, because of human activities.
date: 2017-02-28
date_type: published
publisher: American Geophysical Union
id_number: 10.1002/2016GL071665
creators_browse_id: 2601
full_text_status: public
publication: Geophysical Research Letters
volume: 24
number: 4
pagerange: 1777-1785
refereed: TRUE
issn: 00948276
coversheets_dirty: FALSE
fp7_project: no
fp7_type: info:eu-repo/semantics/article
citation:   He, X., Wada, Y. <https://pure.iiasa.ac.at/view/iiasa/2601.html> ORCID: https://orcid.org/0000-0003-4770-2539 <https://orcid.org/0000-0003-4770-2539>, Wanders, N., & Sheffield, J.  (2017).  Intensification of hydrological drought in California by human water management.   Geophysical Research Letters 24 (4) 1777-1785. 10.1002/2016GL071665 <https://doi.org/10.1002/2016GL071665>.       
document_url: https://pure.iiasa.ac.at/id/eprint/14339/1/grl55488.pdf