Type of resources
Contact for the resource
Met Office NWP high resolution model data for use by African National Meteorological & Hydrological Services to carry out their Public Task.
Forecast maps of sea surface height (SSH), are generated by the ECOWAS Coastal and Marine Resources Management Centre from data obtained from the Operational Mercator global Ocean analysis system via the Copernicus programme at a resolution of 1/12 (0.08) degree. Forecasting of ocean weather is done for a 7-day period including a nowcast product for the present day. The forecast products are generated daily with a geographical area coverage of latitude 10 degrees south to 30 degrees north and longitude 35 degrees west to 15 degrees east. This covers the coastal and oceanic waters of western Africa. Forecast products are updated daily for the seventh day (number of files per day = 1). Further information about this forecast data can be obtained from www.marine.copernicus.eu
The decadal Normalised Difference Vegetation Index product is derived from the daily NDVI products. The NDVD is an aggregated product based on the daily NDVI products using the following aggregation periods: Aggregated NDVD product covering Days 1 to 10 of each month, Days 11 to 20 of each month and covering Day 21 to the last day of each month. The NDVD product estimates the land surface characteristics derived from satellite data. It is widely used to characterise the density and vigour of the given vegetation cover as well as to identify vegetation stress and drought. Applications and Users: Land surface applications. Used Input Data: Reflectances from the SEVIRI Level 1.5 image data for the VIS0.6 µm and the VIS0.8 µm channels.
Total density of ozone in atmospheric column for each image segment, based on the SEVIRI 9.7 micron Ozone channel and other IR and WV channels. Applications and Users: Numerical Weather Prediction Centres, Ozone Monitoring Services and Research Institutes.
The Operational Geophysical Data Record (OGDR) is a near real-time operational product delivered to users within 3 - 5 hours from instrument sensing. The main geophysical parameters in the OGDR product, derived from the Poseidon altimeter on-board the Jason2 satellite, are significant wave height and ocean surface wind speed. Additionally, all necessary magnitudes contributing to the estimation of the sea surface height are provided as well, such altimeter ranges, orbit data (altitude), water vapour correction, geophysical corrections and geophysical references. Finally, other important parameters, intended to help with the interpretation and use of the data for different applications, are provided as well, such as for example backscatter coefficients and a range of instrument and processing quality flags. Both 1Hz and 20Hz sampling data are included. This product is mainly targeting operational weather and ocean forecasting applications. This data set is jointly generated by NOAA and EUMETSAT.
The MODIS active fire products form part of the Advanced Fire Information System (AFIS) that provides fire relation information to people in Southern Africa. The CSIR (South Africa) produce MODIS active fire products from two MODIS direct readout receiving stations located in Pretoria and Hartbeeshoek. The MODIS active fire products consist of the following parameters: Latitude, Longitude, Brightness temperature, Fire Radiative Power, Scan, Date, Time, Satellite and Confidence.
The Fire Radiative Power product (FRP, in megawatts) provides information on the measured radiant heat output of detected fires. It has been demonstrated in small-scale experimental fires that the amount of radiant heat energy liberated per unit time (the Fire Radiative Power) is related to the rate at which fuel is being consumed. This is a direct result of the combustion process, whereby carbon-based fuel is oxidised to CO2 with the release of a certain heat yield. Therefore, measuring this FRP and integrating it over the lifetime of the fire provides an estimate of the total Fire Radiative Energy (FRE), which for wildfires should be proportional to the total mass of fuel biomass combusted. Geostationary observations allow high temporal frequency FRP measurements, and thus a much-improved ability to estimate FRE via temporal integration when compared to the far less-frequent observations made from systems in low-Earth orbit. The FRP product is derived every 15 min at the native SEVIRI pixel resolution. The disseminated product includes for each processed pixel, the FRP (MW), the corresponding uncertainty in the FRP retrieval based on the variability of the background radiance estimation, and a confidence measure (representing the level of confidence that the observation is indeed a true fire). Applications: The FRP product is intended to support emerging operational atmosphere and climate-related applications, such as Air quality forecasting, Carbon cycle assessment and modelling, and Fire activity models.
MODIS Aqua SST and Ocean Colour products. Daily at 1 km resolution, OC3v6 default products: Chlorophyll-A, Kd490, fluorescence line height. Regional data available for Angola, Ivory Coast, South Africa (East), Guinea, Namibia, Somalia (North), Senegal, South Africa (South), Tanzania or South Africa (West).