uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
A drought index accounting for snow
University of Zurich.
University of Freiburg.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL. (Luft-, vatten- och landskapslära)ORCID iD: 0000-0002-6314-2124
2014 (English)In: Water resources research, ISSN 0043-1397, E-ISSN 1944-7973, Vol. 50, no 10, 7861-7872 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2014. Vol. 50, no 10, 7861-7872 p.
Keyword [en]
1812 Drought, 1840 Hydrometeorology, 1863 Snow and ice, drought index, snow-dominated basins
National Category
Oceanography, Hydrology, Water Resources
Research subject
URN: urn:nbn:se:uu:diva-239405DOI: 10.1002/2013WR015143ISI: 000344783800019OAI: oai:DiVA.org:uu-239405DiVA: diva2:774391
Available from: 2014-12-22 Created: 2014-12-22 Last updated: 2015-01-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full texthttp://dx.doi.org/10.1002/2013WR015143

Search in DiVA

By author/editor
Seibert, Jan
By organisation
In the same journal
Water resources research
Oceanography, Hydrology, Water Resources

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 129 hits
ReferencesLink to record
Permanent link

Direct link