We have made several improvements to the DHIS2 Climate app in the last months. You can download the latest release on the DHIS2 App Hub.
Vegetation data (NDVI, EVI)
Normalized Difference Vegetation Index (NDVI) is widely used to measure and monitor plant growth, vegetation cover, and overall health of plants. Vegetation provides favourable environments for mosquitoes, especially Anopheles mosquitoes, which transmit malaria.
NDVI values range from -1 to 1, with higher values indicating denser vegetation. The dataset is from NASA MODIS with a spatial resolution of 250 meters for 16-days intervals.
When you import the data to DHIS2 you can select between weekly (recommended) and monthly period types. Linear interpolation is used to resample the data.
Elevation data
Elevation data has been available in DHIS2 Maps for many years, and now you can import the mean, lowest and highest elevation for your org units with the Climate app.
Showing the same elevation data DHIS2 Climate app (elevation distribution) and the Maps app. The data source is NASA SRTM.
Land cover data
Our latest inclusion is land cover data for 17 different categories (e.g. cropland, wetlands, urban and built-up). There is a significant correlation between land use and land cover and distribution of mosquito species. The data source is NASA MODIS with spatial resolution of 500 meters at yearly intervals from 2002.
Land cover data for Kathmandu district in DHIS2 Climate app and Maps app.
Import weather and climate data for weekly and monthly periods
Previously you had to import climate data from ERA5 and CHIRPS as daily values, and then the built-in aggregation support in DHIS2 could translate this into other period types. Not everyone need daily values, and now you can import the same data as weekly or monthly values with the Climate app.
Select the period type and the Climate app will aggregate the data before importing to DHIS2.
Simplified setup page
Select the data you want to import, and the app shows you the recommended configuration steps in the DHIS2 Maintenance app.
See the recommended configuration (data element, data set, data element group and legend) before importing data to DHIS2.