Skip to content

Keetch-Byram Drought Index (KBDI) in Mekong Region

Keetch-Byram Drought Index (KBDI) is a continuous reference scale for estimating the dryness of the soil and duff layers. The index increases for each day without rain (the amount of increase depends on the daily high temperature) and decreases when it rains. This system is based primarily on recent rainfall patterns. It is a measure of meteorological drought; it reflects water gain or loss within the soil.

The scale ranges from 0 (no moisture deficit) to 800 (extreme drought). The range of the index is determined by assuming that there is 20 cm of moisture in a saturated soil that is readily available to the vegetation (Keetch and Byram, 1968). KBDI is world widely used for drought monitoring for national weather forecast, wildfire prevention and usefully especially in regions with rain-fed crops.

Data Resources (1)

Data Resource Preview - Explore this and other data in the Geospatial Data Explorer (TerriaJS)

Additional Info

Field Value
Dataset topic category
  • Drought
  • SDG13 Climate Action
  • English
Dataset reference date April 9, 2021
Temporal extent's start date January 1, 2020
Temporal extent's end date December 31, 2020
  • Cambodia
  • Lao People's Democratic Republic
  • Myanmar
  • Thailand
  • Viet Nam
West bounding coordinates 86.37301456809199
East bounding coordinates 119.86220836006775
South bounding coordinates -6.4813447749223485
North bounding coordinates 30.15644408789234
Spatial Reference System WGS 84 (EPSG:4326) (CRS:84)
Lineage Wataru Takeuchi, Soni Darmawan, Rizatus Shofiyati, Mai Van Khiem, Kyaw San Oo, Uday Pimple and Suthy Heng, 2015. Near-real time meteorological drought monitoring and early warning system for croplands in Asia. 36th Asian conference on remote sensing (ACRS): Manila, Philippines, Oct. 20, 2015.
License Creative Commons Attribution
Copyright Yes
Keywords drought index
Date uploaded April 9, 2021, 18:28 (UTC)
Date modified May 15, 2021, 07:45 (UTC)