An aggregate drought index: Assessing drought severity based on fluctuations in the hydrologic cycle and surface water storage
Identifieur interne : 000630 ( Istex/Corpus ); précédent : 000629; suivant : 000631An aggregate drought index: Assessing drought severity based on fluctuations in the hydrologic cycle and surface water storage
Auteurs : John A. Keyantash ; John A. DracupSource :
- Water Resources Research [ 0043-1397 ] ; 2004-09.
Abstract
An aggregate drought index (ADI) has been developed, and evaluated within three diverse climate divisions in California. The ADI comprehensively considers all physical forms of drought (meteorological, hydrological, and agricultural) through selection of variables that are related to each drought type. Water stored in large surface water reservoirs was also included. Hydroclimatic monthly data for each climate division underwent correlation‐based principal component analysis (PCA), and the first principal component was deseasonalized to arrive at a single ADI value for each month. ADI time series were compared against the Palmer Drought Severity Index (PDSI) to describe two important droughts in California, the 1976–1977 and 1987–1992 events, from a hydroclimatological perspective. The ADI methodology provides a clear, objective approach for describing the intensity of drought and can be readily adapted to characterize drought on an operational basis.
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DOI: 10.1029/2003WR002610
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<front><div type="abstract">An aggregate drought index (ADI) has been developed, and evaluated within three diverse climate divisions in California. The ADI comprehensively considers all physical forms of drought (meteorological, hydrological, and agricultural) through selection of variables that are related to each drought type. Water stored in large surface water reservoirs was also included. Hydroclimatic monthly data for each climate division underwent correlation‐based principal component analysis (PCA), and the first principal component was deseasonalized to arrive at a single ADI value for each month. ADI time series were compared against the Palmer Drought Severity Index (PDSI) to describe two important droughts in California, the 1976–1977 and 1987–1992 events, from a hydroclimatological perspective. The ADI methodology provides a clear, objective approach for describing the intensity of drought and can be readily adapted to characterize drought on an operational basis.</div>
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<titleInfo type="abbreviated"><title>Water Resour. Res.</title>
</titleInfo>
<genre type="journal">journal</genre>
<subject><genre>index-terms</genre>
<topic authorityURI="http://psi.agu.org/taxonomy5/1800">HYDROLOGY</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1812">Drought</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1894">Instruments and techniques: modeling</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1895">Instruments and techniques: monitoring</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/1833">Hydroclimatology</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4300">NATURAL HAZARDS</topic>
<topic authorityURI="http://psi.agu.org/taxonomy5/4303">Hydrological</topic>
</subject>
<subject><genre>article-category</genre>
<topic>Surface Water and Climate</topic>
</subject>
<identifier type="ISSN">0043-1397</identifier>
<identifier type="eISSN">1944-7973</identifier>
<identifier type="DOI">10.1002/(ISSN)1944-7973</identifier>
<identifier type="CODEN">WRERAQ</identifier>
<identifier type="PublisherID">WRCR</identifier>
<part><date>2004</date>
<detail type="volume"><caption>vol.</caption>
<number>40</number>
</detail>
<detail type="issue"><caption>no.</caption>
<number>9</number>
</detail>
<extent unit="pages"><start>n/a</start>
<end>n/a</end>
<total>13</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">3CAC38A185586D5851C4EBA5E90A51781B95DB23</identifier>
<identifier type="DOI">10.1029/2003WR002610</identifier>
<identifier type="ArticleID">2003WR002610</identifier>
<accessCondition type="use and reproduction" contentType="copyright">Copyright 2004 by the American Geophysical Union.</accessCondition>
<recordInfo><recordContentSource>WILEY</recordContentSource>
</recordInfo>
</mods>
</metadata>
<serie></serie>
</istex>
</record>
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