Climate Resilience Dashboard
Note: The analysis is still ungoing and results will change in subsequent versions of this platform. Hence, conclusions should be drawn with caution at this point in time.
Using climate information derived from different satellites we can look at droughts across Kenya over time. This allows us to identify current areas of drought and compare to histroic 'normal' conditions. Based on literature, we have included the following drought indicators:
• Vegetation Condition Index (VCI): Uses the NDVI to assess the current state of the vegetation relative to long-term minimum and maximum NDVI values at a location. The VCI gives an indication of agricultural drought.
• Temperature Condition Index (TCI): Based on temperature at a location. Similar to the VCI, the TCI uses the current temperature data and compares it to long-term minimum and maximum values which given and indication of a meteorological drought.
• Standardised Precipitation Index (SPI): The SPI is computed based on measurements of precipitation anomalies at a given location, from a comparison of observed total precipitation amounts for an accumulation period of interest with the long-term historic rainfall record for that period. The lower the SPI, the higher the precipitation-induced drought severity.
• Soil Moisture Deficit Index (SMDI): Uses soil moisture data, collected by the Soil Moisture Active Passive (SMAP) satellite mission, to gauge the severity and duration of agricultural drought conditions. It quantifies the deviation of soil moisture from expected levels, with negative deviations indicating drought.
• Composite Drought Index (CDI): The CDI integrates the VCI, TCI, SPI and SMDI into a single index which is the weighted avgerage of the four. In this case, the assigned weights to the VCI, TCI, SPI and SMDI are 0.25, 0.25, 0.25 and 0.25, respectively.
| Drought category | VCI | TCI | SPI | SMDI | CDI |
|---|---|---|---|---|---|
| No drought | >35 | >35 | >-1 | >0 | >35 |
| Moderate drought | 20 - 35 | 20 - 35 | -1 - -1.5 | 0 - -5 | 25 - 35 |
| Severe drought | 10 - 20 | 10 - 20 | -1.5 - -2 | -5 - -10 | 20 - 25 |
| Extreme drought | <10 | <10 | <-2 | <-10 | <20 |
Latest Data - {{latestDate}}
Selected month: {{selected_month}}
Dryland areas are highly dependent on rainfall and go through a natural cycle of wet and dry periods. While, periods of drought are natural occurance in large parts of Kenya, the recent severity and duration of droughts is increasing. This page gives an insight in the drought dynamics over time at various spatial scales: landscape, county, sub-county and ward level.
This plot shows the several drought indicators (VCI, SPI, TCI and SMDI) over time for the selected area. The bars indicate the separate indicators while the red line shows the weighted average of this indicators. Note: the indicators are normalised between 0-100 for visualisation purposes.
Below you can find the satellite-derived drought indicators data from all wards under TWENDE for the last three months. The full dataset, including all climatic variables and the full time series, can be downloaded as CSV below.
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