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.
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.
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 …
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["The Keetch-Byram Drought Index (KBDI) dataset provides a continuous scale (0-800) for estimating the dryness of soil and duff layers, reflecting recent rainfall patterns and meteorological drought."],["KBDI values increase daily without rain (influenced by temperature) and decrease with rainfall, offering insights into soil moisture deficits."],["This dataset, available from 2007-01-01 to 2024-12-11, is valuable for drought monitoring, wildfire prevention, and agricultural planning, especially in rain-fed regions."],["Provided by the Institute of Industrial Science at the University of Tokyo, the dataset is accessible through Google Earth Engine with a resolution of 4000 meters."],["Licensed under CC-BY-4.0, the KBDI dataset encourages research, education, and non-profit use for drought analysis and applications."]]],["The dataset provides the Keetch-Byram Drought Index (KBDI), a measure of soil and duff layer dryness, ranging from 0 (no deficit) to 800 (extreme drought). The index increases during dry periods and decreases with rainfall, reflecting meteorological drought conditions. The data, provided by the University of Tokyo, is updated daily from 2007-01-01 to 2025-02-21 and is available via Google Earth Engine. Pixel size is 4000 meters. It is tagged for drought and rainfall.\n"]]
