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A drought index acc...
A drought index accounting for snow
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- Staudinger, Maria (författare)
- University of Zurich
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- Stahl, Kerstin (författare)
- University of Freiburg
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- Seibert, Jan, 1968- (författare)
- Uppsala universitet,Luft-, vatten- och landskapslära,Luft-, vatten- och landskapslära
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: Water resources research. - 0043-1397 .- 1944-7973. ; 50:10, s. 7861-7872
- Relaterad länk:
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The Standardized Precipitation Index (SPI) is the most widely used index to characterize droughts that are related to precipitation deficiencies. However, the SPI does not always deliver the relevant information for hydrological drought management particularly in snow-influenced catchments. If precipitation is temporarily stored as snow, then there is a significant difference between meteorological and hydrological drought because the delayed release of melt water to the stream. We introduce an extension to the SPI, the Standardized Snow Melt and Rain Index (SMRI), that accounts for rain and snow melt deficits, which effectively influence streamflow. The SMRI can be derived without snow data, using temperature and precipitation to model snow. The value of the new index is illustrated for seven Swiss catchments with different degrees of snow influence. In particular for catchments with a larger component of snowmelt in runoff generation, the SMRI was found to be a worthwhile complementary index to the SPI to characterize streamflow droughts.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
Nyckelord
- 1812 Drought
- 1840 Hydrometeorology
- 1863 Snow and ice
- drought index
- snow-dominated basins
- Hydrology
- Hydrologi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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