Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5439 |
Effect of hydroclimatological teleconnections on the watershed-scale drought predictability in the southeastern United States | |
Sehgal, Vinit1,2; Sridhar, Venkataramana1 | |
2018-04-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38页码:E1139-E1157 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Large-scale atmospheric circulation patterns have a strong influence on hydrologic variability in the southeastern United States (SEUS). These climatic indices are often linked with anomalous climatic conditions and thus can be useful to forecast either water surplus or deficit conditions over the region. This study provides an assessment of the watershed-scale influence of hydroclimatological teleconnections in the context of drought predictability. The interrelationship between several climate indices is assessed with the monthly percentiles of soil water storage (SW), precipitation (PCP), surface run-off (SURQ), and potential evapotranspiration (PET) for 50 watersheds in the South Atlantic Gulf region of the SEUS. The hydrologic variables are simulated by implementing SWAT models for each watershed at a HUC-12 resolution for a period of January 1982 through December 2013. The study highlights the strong correlation between the climate indices and watershed-scale hydrologic variables and provides important insights on the effect of seasonality and the dynamics of water balance components on the predictability of drought at watershed-scale. Among all hydrologic variables evaluated, soil moisture shows a stronger relationship with the climate indices compared to PCP, SW, and SURQ. The interrelationship between watershed hydrology and climate indices is found to be stronger during fall (September-November) and winter seasons (December-February) with high correlation of SW and PCP with the climate indices, especially in the Carolinas, Georgia, and parts of Florida. Simulated SW corresponds strongly with the Palmer drought severity index (PDSI) in terms of its response to climate indices, indicating that SW can be an effective predictor of drought in the region. |
英文关键词 | hydroclimatology drought predictability teleconnections ENSO PDSI SWAT southeastern United States |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431999600076 |
WOS关键词 | ATLANTIC MULTIDECADAL OSCILLATION ; NINO-SOUTHERN-OSCILLATION ; SEA-SURFACE TEMPERATURES ; TROPICAL CYCLONES ; RIVER-BASIN ; TRANSPORT PARAMETERS ; MODEL PERFORMANCE ; VARIABILITY ; CLIMATE ; ENSO |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37153 |
专题 | 气候变化 |
作者单位 | 1.Virginia Polytech Inst & State Univ, Dept Biol Syst Engn, Blacksburg, VA 24060 USA; 2.Texas A&M Univ, Water Management & Hydrol Sci, College Stn, TX USA |
推荐引用方式 GB/T 7714 | Sehgal, Vinit,Sridhar, Venkataramana. Effect of hydroclimatological teleconnections on the watershed-scale drought predictability in the southeastern United States[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38:E1139-E1157. |
APA | Sehgal, Vinit,&Sridhar, Venkataramana.(2018).Effect of hydroclimatological teleconnections on the watershed-scale drought predictability in the southeastern United States.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38,E1139-E1157. |
MLA | Sehgal, Vinit,et al."Effect of hydroclimatological teleconnections on the watershed-scale drought predictability in the southeastern United States".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38(2018):E1139-E1157. |
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