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Drought hazard in Kazakhstan in 2000-2016: a remote sensing perspective
Olena Dubovyk1,2, Gohar Ghazaryan3,4, Javier González3
1Center for Remote Sensing of Land Surfaces (ZFL), University of Bonn, Genscherallee 3, 53113, Bonn, Germany. odubovyk@uni-bonn.de.
Kazakhstan experienced significant drought hazard events from 2000-2016, impacting over half the country in several years. Satellite remote sensing data is crucial for effective drought monitoring and mitigation strategies.
Area of Science:
- Environmental Science
- Remote Sensing
- Earth Observation
Background:
- Droughts pose substantial risks to Kazakhstan's economy and population.
- Understanding drought patterns is vital for national resilience.
Purpose of the Study:
- To assess and characterize drought hazard events in Kazakhstan from 2000 to 2016.
- To analyze the spatial and temporal distribution of drought-affected areas.
Main Methods:
- Utilized Moderate Resolution Imaging Spectroradiometer (MODIS) Enhanced Vegetation Index (EVI) time series data.
- Calculated Vegetation Condition Index (VCI) and Standardized Enhanced Vegetation Index anomalies (Z_EVI).
- Assessed vegetation cover changes and analyzed drought hazard characteristics.
Main Results:
- Drought conditions were prevalent annually across Kazakhstan between 2000 and 2016.
- In 2012 and 2014, the largest drought-affected areas were recorded, impacting over 50% of the country.
- Drought severity and spatial extent varied significantly year by year.
Conclusions:
- Spatially explicit and timely drought information is essential for successful mitigation.
- Integrating remote sensing-based drought data into national monitoring systems is necessary for Kazakhstan.
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