Arid
DOI10.1175/JAMC-D-16-0270.1
Discerning "Flavors’’ of Drought Using Climate Extremes Indices
Crimmins, Michael A.1; Ferguson, Daniel B.2; Meadow, Alison M.2; Weiss, Jeremy L.3
通讯作者Crimmins, Michael A.
来源期刊JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
ISSN1558-8424
EISSN1558-8432
出版年2017
卷号56期号:4页码:989-1001
英文摘要

Monitoring drought conditions in arid and semiarid regions characterized by high levels of intra-and interannual hydroclimatic variability is a challenging task. Typical drought-monitoring indices that are based on monthly-scale data lack sufficient temporal resolution to detect hydroclimatic extremes and, when used operationally, may not provide adequate indication of drought status. In a case study focused on the Four Corners region of the southwestern United States, the authors used recently standardized World Meteorological Organization climate extremes indices to discern intra-annual hydroclimatic extremes and diagnose potential drought status in conjunction with the simple metric of annual total precipitation. By applying datareduction methods to a suite of metrics calculated using daily data for 1950-2014, the authors identified five extremes indices that provided additional insight into interannual hydroclimatic variability. Annual time series of these indices revealed anomalous years characterized by shifts in the seasonal distribution of precipitation and in the intensity and frequency of individual events. The driest 4-yr intervals over the study period, characterized by similar annual and interval total precipitation anomalies, represent dramatically different assemblages of index values, which are interpreted as different "flavors’’ of drought. In turn, it is expected that varying drought impacts on ecosystems, agricultural systems, and water resources would emerge under these different flavors of drought. Results from this study indicate that operational drought monitoring and historical drought assessments in arid and semiarid regions would benefit from the additional insight that daily-based hydroclimatic extremes indices provide, especially in light of expected climate change-driven changes to the hydrologic cycle.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000399680900020
WOS关键词UNITED-STATES ; PRECIPITATION VARIABILITY ; SOIL-MOISTURE ; PERSPECTIVE ; RAINFALL ; PATTERNS ; SOUTHERN ; HISTORY ; RIVER
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
来源机构University of Arizona
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/200042
作者单位1.Univ Arizona, Dept Soil Water & Environm Sci, Tucson, AZ 85721 USA;
2.Univ Arizona, Inst Environm, Tucson, AZ USA;
3.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA
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Crimmins, Michael A.,Ferguson, Daniel B.,Meadow, Alison M.,等. Discerning "Flavors’’ of Drought Using Climate Extremes Indices[J]. University of Arizona,2017,56(4):989-1001.
APA Crimmins, Michael A.,Ferguson, Daniel B.,Meadow, Alison M.,&Weiss, Jeremy L..(2017).Discerning "Flavors’’ of Drought Using Climate Extremes Indices.JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY,56(4),989-1001.
MLA Crimmins, Michael A.,et al."Discerning "Flavors’’ of Drought Using Climate Extremes Indices".JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY 56.4(2017):989-1001.
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