fc1f9f9a-b214-48dc-8db0-a64ab4766dcf e69a1f55-222e-4e4c-b329-92eb7523ee7f Jessica Ferner ferner@uni-bonn.de 2021-03-18T17:17:50 ISO 19115:2003/19139 1.0 Time Series of Forage Provision Maps (Green Biomass) covering the Vea Catchment (Ghana, Burkina Faso), 2015-16 2017-01-12T16:00:00 1 The time series of maps is showing three differnt forage parameters (green biomass, metabolisable energy, metabolisable energy yield) from 04.12.2015 to 29.09.2016. The covered area matches the Vea catchment at the border region of Ghana and Burkina Faso. For model calibration, data was collected during the rainy season 2012 at 21 sites spread along a north-south climate gradient reaching from northern Ghana to central Burkina Faso. Spectral reflectance measurements of vegetation plots were performed using a FieldSpec 3 Hi-Res Portable Spectroradiometer (ASD Inc., Boulder, CO, USA). Partial least squares regression was used to calibrate spectral models between reflectance data and forage characteristics (green biomass & metabolisable energy). Metabolisable enrgy yield was calculated based on the other two forage parameters. For more details regarding sampling design and model calibration, see Ferner, Linstädter et al. (2015). Sentinel-2 images were acquired for twelve dates. Imagery was atmospherically corrected using the plugin ‘sen2cor’ within the SNAP toolbox, provided by the European Space Agency (ESA). To assure that forage models were only applied on vegetated areas, a vegetation mask was build based on MESMA (multiple endmember spectral mixture analysis) and only pixels with a fractional cover of green vegetation of more than 30% were used. Finally, forage provision models resampled to Sentinel-2 spectral resolution were applied to obtain maps of estimated forage provision. Further information: Ferner, J., Linstädter, A., Südekum, K. H., & Schmidtlein, S. (2015). Spectral indicators of forage quality in West Africa’s tropical savannas. International Journal of Applied Earth Observation and Geoinformation, 41, 99-106. Provide information on forage availability (green Biomass) and development over the dry and rainy season in the Sudanian savanna of West Africa Jessica Ferner Center for Remote Sensing of Land Surfaces (ZFL), University of Bonn Junior Researcher +49 (0)228-73-1831 Bonn 53113 Germany ferner@uni-bonn.de https://wascal-dataportal.org/geonetwork/srv/eng/resources.get?uuid=fc1f9f9a-b214-48dc-8db0-a64ab4766dcf&fname=Green_Biomass_-_Jessica_Ferner.png large_thumbnail png grazing living environment environment livestock livestock farming overgrazing biotic factor fodder plant fodder vegetation cover vegetation animal nutrition animal husbandry biotope protection semi-arid land ecosystem arid land biomass feeding of animals GEMET - Concepts, version 2.4 2010-01-13 geonetwork.thesaurus.external.theme.gemet forage quality forage quantity time series maps Ghana Burkina Faso Region 2006-09-22 geonetwork.thesaurus.external.place.regions Nothern Ghana Southern Burkina Vea catchment Aniabiisi The data is accessible only as WebMapService. In case you want to get access to the data please contact the distributor. b4b63d82-e41f-42f4-b76b-87d8e0120a1a 7420303a-0154-4b22-9c22-d4606ba7fd00 environment -1.040927101251093 -0.7250701677012804 10.46349114118234 11.089457118883727 2015-12-04 2016-09-29 12 time related layers per green biomass GeoTIFF 1.0 Jessica Ferner Center for Remote Sensing of Land Surfaces (ZFL), University of Bonn ferner@uni-bonn.de Please contact distributor per email. https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20151204_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20151224_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160113_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160123_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160212_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160303_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160402_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160422_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160611_rasWASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160611_rasWASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160611_rasWASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160611_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160702_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160919_ras Forage Provision: Green Biomass Time Series https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_remo_green-biomass-forage-prov-time-series_vea-ghana_20160929_ras Forage Provision: Green Biomass Time Series Data quality of forage variables modelled from hyperspectral reflectance is: Model adjR² nRMSE [%] metabolisable enery 0.56 11.7 green biomass 0.64 11.3