Effects of climate variability on water storage in the Colorado river basin

Ruud Hurkmans, Peter A Troch, Remko Uijlenhoet, Paul Torfs, Matej Durcik

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Understanding the long-term (interannual-decadal) variability of water availability in river basins is paramount for water resources management. Here, the authors analyze time series of simulated terrestrial water storage components, observed precipitation, and discharge spanning 74 yr in the Colorado River basin and relate them to climate indices that describe variability of sea surface temperature and sea level pressure in the tropical and extratropical Pacific. El Niño-Southern Oscillation (ENSO) indices in winter [January-March (JFM)] are related to winter precipitation as well as to soil moisture and discharge in the lower Colorado River basin. The low-frequency mode of the Pacific decadal oscillation (PDO) appears to be strongly correlated with deep soil moisture. During the negative PDO phase, saturated storage anomalies tend to be negative and the "amplitudes" (mean absolute anomalies) of shallow soil moisture, snow, and discharge are slightly lower compared to periods of positive PDO phases. Predicting interannual variability, therefore, strongly depends on the capability of predicting PDO regime shifts. If indeed a shift to a cool PDO phase occurred in the mid-1990s, as data suggest, the current dry conditions in the Colorado River basin may persist.

Original languageEnglish (US)
Pages (from-to)1257-1270
Number of pages14
JournalJournal of Hydrometeorology
Volume10
Issue number5
DOIs
StatePublished - Oct 2009

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Pacific Decadal Oscillation
water storage
river basin
climate
soil moisture
anomaly
shallow soil
winter
Southern Oscillation
sea level pressure
water availability
sea surface temperature
snow
effect
time series

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Effects of climate variability on water storage in the Colorado river basin. / Hurkmans, Ruud; Troch, Peter A; Uijlenhoet, Remko; Torfs, Paul; Durcik, Matej.

In: Journal of Hydrometeorology, Vol. 10, No. 5, 10.2009, p. 1257-1270.

Research output: Contribution to journalArticle

Hurkmans, Ruud ; Troch, Peter A ; Uijlenhoet, Remko ; Torfs, Paul ; Durcik, Matej. / Effects of climate variability on water storage in the Colorado river basin. In: Journal of Hydrometeorology. 2009 ; Vol. 10, No. 5. pp. 1257-1270.
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