A comprehensive assessment of remote sensing and traditional based drought monitoring indices at global and regional scale

被引:94
作者
Alahacoon, Niranga [1 ,2 ]
Edirisinghe, Mahesh [1 ]
机构
[1] Univ Colombo, Dept Phys, Colombo, Sri Lanka
[2] Int Water Management Inst IWMI, Colombo, Sri Lanka
关键词
Drought indices; drought; drought monitoring; drought forecasting; remote sensing; TEMPERATURE CONDITION INDEX; LAND-SURFACE TEMPERATURE; WATER-STRESS INDEX; VEGETATION INDEX; AGRICULTURAL DROUGHT; METEOROLOGICAL DROUGHT; SOIL-MOISTURE; MODIS; SEVERITY; PRODUCTS;
D O I
10.1080/19475705.2022.2044394
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
This study reports a comprehensive review on drought indices used in monitoring meteorological, agricultural, hydrological, and socio-economic drought. Drought indices have been introduced as an important approach to quantitative and qualitative calculations of drought's severity and impact. There were 111 drought indices reviewed in this study, which fall into two categories: traditional (location-specific/model) and remote sensing (RS). Out of 111 indices, 44 belong to the traditional indices and 67 belong to the RS section. This study shows that meteorological drought monitoring has the highest number (22) of traditional indices, about 20% overall, while the lowest (7) agricultural drought monitoring is 6.3%. The specialty is that when considering remote sensing-based drought indices, 90% are used for agricultural drought monitoring and 10% for hydrological and meteorological drought monitoring. However, the study found that advances in satellite technology have accelerated the design of new drought indices and that replacing traditional location-specific data with satellite observation makes it easier to calculate more spatial distribution and resolution.
引用
收藏
页码:762 / 799
页数:38
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