Hydrological Drought Assessment of Energy-Based Water Deficit Index (EWDI) at Different Geographical Regions
Joint Authors
Kim, Dongkyun
Lee, Joo-Heon
Choi, Minha
Sur, Chanyang
Iqbal, Muhammad Mazhar
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-29
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
This study applied the remote sensing-based drought index, namely, the Energy-Based Water Deficit Index (EWDI), across Mongolia, Australia, and Korean Peninsula for the period between 2000 and 2010.
The EWDI is estimated based on the hydrometeorological variables such as evapotranspiration, soil moisture, solar radiation, and vegetation activity which are derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) imageries.
The estimated EWDI was compared with the Evaporative Stress Index (ESI), the Vegetation Condition Index (VCI), and the Standardized Precipitation Index (SPI).
The correlation coefficients between the drought indices are as follows: 0.73–0.76 (EWDI vs ESI), 0.64–0.71 (EWDI vs VCI), 0.54–0.64 (EWDI vs SPI-3), 0.69–0.71 (ESI vs VCI), 0.55–0.62 (ESI vs SPI-3), and 0.53–0.57 (VCI vs SPI-3).
The drought prediction accuracy of each index according to error matrix analysis is as follows: 83.33–94.17% (EWDI), 70.00–91.67% (ESI), 47.50–85.00% (VCI), and 61.67–88.33% (SPI-3).
Based on the results, the EWDI and ESI were found to be more accurate in capturing moderate drought conditions than the SPI at different geographical regions.
American Psychological Association (APA)
Sur, Chanyang& Kim, Dongkyun& Lee, Joo-Heon& Iqbal, Muhammad Mazhar& Choi, Minha. 2019. Hydrological Drought Assessment of Energy-Based Water Deficit Index (EWDI) at Different Geographical Regions. Advances in Meteorology،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1118792
Modern Language Association (MLA)
Sur, Chanyang…[et al.]. Hydrological Drought Assessment of Energy-Based Water Deficit Index (EWDI) at Different Geographical Regions. Advances in Meteorology No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1118792
American Medical Association (AMA)
Sur, Chanyang& Kim, Dongkyun& Lee, Joo-Heon& Iqbal, Muhammad Mazhar& Choi, Minha. Hydrological Drought Assessment of Energy-Based Water Deficit Index (EWDI) at Different Geographical Regions. Advances in Meteorology. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1118792
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118792