| DOI: | 10.1002/2016GL070302
|
| 论文题名: | A drought index based on actual evapotranspiration from the Bouchet hypothesis |
| 作者: | Kim D.; Rhee J.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8570
|
| EISSN: | 1944-8301
|
| 出版年: | 2016
|
| 卷: | 43, 期:19 | | 起始页码: | 10277
|
| 结束页码: | 10285
|
| 语种: | 英语
|
| 英文关键词: | Bouchet hypothesis
; drought identification
; ET deficit
; modified Granger and Gray method
; vegetative drought
|
| Scopus关键词: | Evapotranspiration
; Bouchet hypothesis
; ET deficit
; Land-atmosphere couplings
; Modified Granger and Gray method
; Palmer drought severity indices
; Potential evapotranspiration
; Standardized precipitation index
; Vegetation health indices
; Drought
|
| 英文摘要: | Global drought assessment has mainly depended on precipitation-based drought indices that may also take into account potential evapotranspiration (ETp). In this study, we combined the actual evapotranspiration (ETa) estimated from the Bouchet hypothesis and the structure of the Standardized Precipitation-Evapotranspiration Index to develop a fully ET-based drought index, the Standardized Evapotranspiration Deficit Index (SEDI). We found that SEDI, without using precipitation data, produces results that are consistent with the Palmer Drought Severity Index (PDSI) and the Standardized Precipitation Index (SPI) for drought identification in the South-Central United States. We also found a competitive performance of SEDI through comparisons between the Vegetation Health Index with SEDI, PDSI, and SPI. We suggest the high applicability of the SEDI based on the Bouchet hypothesis as an independent drought index for regions with strong land-atmosphere coupling or as an alternative drought index to fully precipitation-dependent indices for assessing agricultural droughts. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991044378&doi=10.1002%2f2016GL070302&partnerID=40&md5=0247790132d32c97b69c997ec3c9762f
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9533
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Climate Application Department, APEC Climate Center, Busan, South Korea
|
| Recommended Citation: | |
Kim D.,Rhee J.. A drought index based on actual evapotranspiration from the Bouchet hypothesis[J]. Geophysical Research Letters,2016-01-01,43(19).
|
|
|