Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1175/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
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ISSN | 1558-8424 |
EISSN | 1558-8432 |
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 |
推荐引用方式 GB/T 7714 | 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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