South Africa Warm Spell Duration Index (WSDI)

Annual number of days with at least six consecutive days when daytime temperatues > 90th percentile. The baseline is calculated for 2001–2020, with projections for 2021–2040 and 2041–2060 under two climate scenarios: RCP 4.5 (moderate emissions) and RCP 8.5 (high emissions).

Resources

Warm Spell Duration Index - Johannebsurg & Ekurhuleni (2001-2020) geotiff (Details)

Annual number of days with at least six consecutive days when daytime temperatures exceed the 90th percentile for the period 2001-2020.

Reference coordinate system	EPSG:4326

Warm Spell Duration Index - Johannebsurg & Ekurhuleni (2021-2040, RCP4.5 & RCP8.5) geotiff (Details)

Projected annual number of days with at least six consecutive days when daytime temperatures exceed the 90th percentile under the RCP 4.5 and 8.5 scenario for 2021-2040.

Reference coordinate system	EPSG:4326

Warm Spell Duration Index - Johannebsurg & Ekurhuleni (2041-2060, RCP4.5 & RCP8.5) geotiff (Details)

Projected annual number of days with at least six consecutive days when daytime temperatures exceed the 90th percentile under the RCP 4.5 and 8.5 scenario for 2041-2060.

Reference coordinate system	EPSG:4326

Metadata markdown
Metadata json

RDL Hazard Info

Hazard type	Extreme Temperature
Processes	Extreme heat
Intensity	Wet Bulb Globe Temperature in Celsius
Hazard Analysis Type	Probabilistic
Calculation Method	Simulated

Additional Info

ID of dataset	WSDI.zip
Publisher of dataset	GFDRR; VITO
Dataset version	30 March 2022
Data purpose	This dataset is part of the scientific paper: Souverijns, N., De Ridder, K., Veldeman, N., Lefebre, F., Kusambiza-Kiingi, F., Memela, W., Jones, N.K.W., 2022. Urban heat in Johannesburg and Ekurhuleni, South Africa: A meter-scale assessment and vulnerability analysis. Urban Climate, 46, 101331. https://doi.org/10.1016/j.uclim.2022.101352
Project that produced the dataset	Future Heat Stress Indicators for Johannesburg and Ekurhuleni
Additional details	Heat stress indicators for present and future climates for the cities of Johannesburg and Ekurhuleni (South Africa) at 30m spatial resolution calculated with UrbClim (De Ridder et al., 2015) for the following scenarios: 2001-2020: present time (ERA5 input data), 2021-2040 RCP4.5 (CMIP5 ensemble), 2021-2040 RCP8.5 (CMIP5 ensemble), 2041-2060 RCP4.5 (CMIP5 ensemble), and 2041-2060 RCP8.5 (CMIP5 ensemble)
Creator	GFDRR
Contact Point	Bradley Riley
License	CC-BY-4.0