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This study report provides a comprehensive list of ongoing REDD projects and programmes as well as their potential contributions to GHG emissions. Varying levels of international commitment towards the objectives of REDD+ initiatives... more
This study report provides a comprehensive list of ongoing REDD projects and programmes as well as their potential contributions to GHG emissions. Varying levels of international commitment towards the objectives of REDD+ initiatives highlighted are examined and discussed in relation to the objectives and specific challenges in their implementation in Africa. To avoid methodological inconsistencies, like process identified in Africa are put together to build a database of existing initiatives and their status of implementation. Next, such individual initiatives are evaluated, each on their own merit and demerit to determine conflicting aims and policies. In addition, the strategies for implementation and barriers encountered are evaluated to avoid unnecessary competition and duplication of efforts. To do so, literature on current state of forests in Africa was extensively reviewed to obtain a comprehensive understanding of the actors of land degradation. To address both mitigation a...
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ABSTRACT A modified version of the MODerate resolution Imaging Spectroradiometer (MODIS) bidirectional reflectance distribution function (BRDF) algorithm is presented for use in the angular normalization of surface reflectance data... more
ABSTRACT A modified version of the MODerate resolution Imaging Spectroradiometer (MODIS) bidirectional reflectance distribution function (BRDF) algorithm is presented for use in the angular normalization of surface reflectance data gathered by the Spinning Enhanced Visible and InfraRed Imager (SEVIRI) aboard the geostationary Meteosat Second Generation (MSG) satellites. We present early and provisional daily nadir BRDF-adjusted reflectance (NBAR) data in the visible and near-infrared MSG channels. These utilize the high temporal resolution of MSG to produce BRDF retrievals with a greatly reduced acquisition period than the comparable MODIS products while, at the same time, removing many of the angular perturbations present within the original MSG data. The NBAR data are validated against reflectance data from the MODIS instrument and in situ data gathered at a field location in Africa throughout 2008. It is found that the MSG retrievals are stable and are of high-quality across much of the SEVIRI disk while maintaining a higher temporal resolution than the MODIS BRDF products. However, a number of circumstances are discovered whereby the BRDF model is unable to function correctly with the SEVIRI observations—primarily because of an insufficient spread of angular data due to the fixed sensor location or localized cloud contamination.
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Research Interests: Geography, Environmental Geography, Computer Science, Algorithms, Computer Engineering, and 15 moreComputational Complexity, Atmospheric Modeling, Modeling, Environmental Sustainability, Analysis, Models, Atmosphere, Generation, Method, Code, Geomatic Engineering, Atmospheric Correction, Acoustic Radiative Transfer Model, Augmentation, and Data Gathering
Page 1. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, VOL. 3, NO. 3, SEPTEMBER 2010 271 Detecting Canopy Water Status Using Shortwave Infrared Reflectance Data From Polar Orbiting ...
Research Interests: Environmental Geography, Remote Sensing, Hydrology, Satellite remote sensing, Temporal Resolution, and 15 moreEnvironmental Remote Sensing, Remote sensing and GIS, Earth Observation, Canopy Science, Seviri, Msg, Vegetation, Infrared, Radiometry, Aboveground biomass, Indexation, Infrared imaging, Growing Season, Normalized Difference Vegetation Index, and dry period
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... Dakar, Edition GIA (Groupe Inter Africain). Bâ, AT, Sambou, B., Ervik, F., Goudiaby, A., Camara, C. & Diallo, D. (1997): Végétation et flore. ... Schmitz, A., Fall, AO & Rouchiche, S. (1996): Contrôle et utilisation du feu en... more
... Dakar, Edition GIA (Groupe Inter Africain). Bâ, AT, Sambou, B., Ervik, F., Goudiaby, A., Camara, C. & Diallo, D. (1997): Végétation et flore. ... Schmitz, A., Fall, AO & Rouchiche, S. (1996): Contrôle et utilisation du feu en zones arides et subhumides africaines. ...
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... Nielsen, Alioune Ka, Drissa Diallo, Pierre Cissé, Drissa Coulibaly, Bruno Barbier, Dapola Da,Ibrahim Bouzou, Waziri Maman Mato, Daniel Dabi, Vincent Ihemegbulem, Awa Diouf, Malick Zoromé, Abdou Maiga, Inge Sandholt, Anette Reenberg,... more
... Nielsen, Alioune Ka, Drissa Diallo, Pierre Cissé, Drissa Coulibaly, Bruno Barbier, Dapola Da,Ibrahim Bouzou, Waziri Maman Mato, Daniel Dabi, Vincent Ihemegbulem, Awa Diouf, Malick Zoromé, Abdou Maiga, Inge Sandholt, Anette Reenberg, Kjeld Rasmussen Understanding ...
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ABSTRACT Vegetation dynamics of the West African Sahel has attracted great scientific interest over the last 40 years because of the dramatic inter-decadal variability observed in the resource base of the region directly impacting on the... more
ABSTRACT Vegetation dynamics of the West African Sahel has attracted great scientific interest over the last 40 years because of the dramatic inter-decadal variability observed in the resource base of the region directly impacting on the livelihoods of the West African population. From farmers to pastoralists, agro-pastoralists and forest-users, all depend on the availability of vegetation resources and are affected by fluctuations in the available vegetation resource. Vegetation dynamics are controlled by both natural and human factors, including climate change and variability, increased concentration of CO2 in the atmosphere, grazing pressure, bush fires and agricultural expansion or contraction. The use of satellite data in combination with field data played a major role in the monitoring of vegetation dynamics and land use in the Sahel, since the mega drought of the 1970s and the 1980s. This paper briefly reviews the advance of satellite-based monitoring of vegetation dynamics over these 40 years. We discuss the promises of current and likely future data sources and analysis tools, as well as the need to strengthen in situ data collection to support and validate satellite-based vegetation and land use monitoring and modelling.
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The authors study, with the aid of an implicit method of finite difference, natural, laminar, permanent and bidimensional convection, in a fluid situated between two vertical plates consisting of porous material (granular type) saturated... more
The authors study, with the aid of an implicit method of finite difference, natural, laminar, permanent and bidimensional convection, in a fluid situated between two vertical plates consisting of porous material (granular type) saturated with air and crossed by constant density heat flux. In the channel, it admits the hypothesis of the film limit, utilising the Bernoulli equation at the
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Between 1930 and 1970, the colonial administration and the Senegalese state established 213 protected areas aimed at preserving the natural heritage and ensuring a future supply of natural resources for the local population. Today, the... more
Between 1930 and 1970, the colonial administration and the Senegalese state established 213 protected areas aimed at preserving the natural heritage and ensuring a future supply of natural resources for the local population. Today, the woody resources from the protected savannas still provide an important source of firewood, construction materials, food, animal fodder and medicine for the local people. The
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This article was submitted without an abstract, please refer to the full-text PDF file.
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... Mamadou Lamine Sow, Department of Physics, Faculty of Science and Technology, UniversityCheikh Anta Diop of Dakar, Fann, Senegal. Joseph Sarr, Department of Physics, Faculty of Science and Technology, University Cheikh Anta Diop of... more
... Mamadou Lamine Sow, Department of Physics, Faculty of Science and Technology, UniversityCheikh Anta Diop of Dakar, Fann, Senegal. Joseph Sarr, Department of Physics, Faculty of Science and Technology, University Cheikh Anta Diop of Dakar, Fann, Senegal. ...
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... For wetness, the difference between CH5 and CH7 give more information because of water absorption in the mid infrared part of the spectrum. ... (6) corresponds to spatial continuous fuel and medium moisture rate that can nevertheless... more
... For wetness, the difference between CH5 and CH7 give more information because of water absorption in the mid infrared part of the spectrum. ... (6) corresponds to spatial continuous fuel and medium moisture rate that can nevertheless enable the fire to go through with relative ...
Research Interests: Management, West Africa, Risk assessment, Simulation, Ecosystems, and 14 moreGeomatic Engineering, Species Diversity, Vegetation, National Park, Burning, Protected Area, Humidity, Fire Risk, Fire Behavior, Risk Assessment, Orthogonal Transformation, Land Cover Mapping, Management Tool, and Brightness
Research Interests: Cartography, Time Series, Theory, Evaluation, Time series analysis, and 15 moreEarth Observation, Models, Noise, Ndvi, Geomatic Engineering, Trend Analysis, Accuracy, Radiometry, Spot, Data Processing, Precision, Long Term, Compositional Data, Normalized Difference Vegetation Index, and Spectral Response
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... These constraints may include limited tertiary education, especially in remote sensing, conflicting national interests ... many African countries, the former type of inexpensive, low-technology solution was ... 40% imply that the free... more
... These constraints may include limited tertiary education, especially in remote sensing, conflicting national interests ... many African countries, the former type of inexpensive, low-technology solution was ... 40% imply that the free ETMþ data will largely meet African application needs ...