Africa Adaptation Atlas Hazards - NexGDDP CMIP6

The Adaptation Atlas NexGDDP hazards dataset provides 0.25° resolution historical and future climate-related hazard indicators derived from the NASA NexGDDP CMIP6 projections. The dataset covers 4 Shared Socioeconomic Pathways (SSP1-2.6, SSP2-4.5, SSP3-7.0, SSP5-8.5) and four future periods between 2021 and 2100, based on 18 global climate models (ACCESS-CM2, ACCESS-ESM1-5, CMCC-ESM2, CanESM5, EC-Earth3, EC-Earth3-Veg-LR, GFDL-ESM4, INM-CM4-8, INM-CM5-0, IPSL-CM6A-LR, KACE-1-0-G, MIROC6, MPI-ESM1-2-HR, MPI-ESM1-2-LR, MRI-ESM2-0, NorESM2-LM, NorESM2-MM, TaiESM1) and their multi-model ensemble mean. Using daily projections of temperature, precipitation, solar radiation, and relative humidity, the dataset includes ten hazard indices spanning drought stress, heat stress for crops, humans, and livestock, and waterlogging and flooding conditions.

These hazards include:

• NDD: Number of dry days

• NDWS: Number of soil moisture stress days

• TAI: Thornthwaite’s aridity index

• NTx35: Number of heat stress days for crops (Tmax > 35 °C)

• NTx40: Number of extreme heat stress days for crops (Tmax > 40 °C)

• HSM_NTx35: Number of heat stress days for maize during the crop growing season

• HSH: Human heat stress index

• THI: Cattle thermal humidity index

• NDWL0: Number of days with soil waterlogging at saturation or above

• NDWL50: Number of days with soil waterlogging at 50% between field capacity and saturation