Essays about: "GIMMS"

Showing result 1 - 5 of 8 essays containing the word GIMMS.

  1. 1. A global analysis on impact of conflicts on long-term greening trends

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Mathias Welp; [2020]
    Keywords : NDVI; Conflicts; UCDP; GIMMS; Google Earth Engine; Physical Geography; Ecosystem Science; Earth and Environmental Sciences;

    Abstract : Armed conflicts were and are still shaping the global terrestrial land surface and can have severe direct and indirect impacts on societies, economies and the environment. This study attempts to assess the impact of armed conflicts on vegetation on global and regional scale. READ MORE

  3. 2. Mapping tree canopy cover in the semi-arid Sahel using satellite remote sensing and Google Earth imagery

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Abdalla Eltayeb Abdalla Mohamed; [2017]
    Keywords : Sahel; physical geography and ecosystem analysis; tree cover; NDVI; Google Earth; Landsat 8; geomatics; Earth and Environmental Sciences;

    Abstract : Tree vegetation is an essential element in the daily life of the people in the Sahel region of Africa. It is also considered as a robust indicator of the Sahel ecosystem status and health. In this thesis, a method to estimate tree vegetation was developed and used in mapping the tree canopy cover in semi-arid Sahel. READ MORE

  4. 3. Spatial assessment of NDVI as an indicator of desertification in Ethiopia using remote sensing and GIS

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Gezahagn Negash Seboka; [2016]
    Keywords : NDVI and Rainfall; land degradation; climate change; desertification; NOAA AVHRR; land cover; GIS; Physical Geography and Ecosystem analysis; Earth and Environmental Sciences;

    Abstract : Desertification is a serious environmental and socio-economic problem occurring at global, regional and local scale. According to Article 1(a) of the United Nations Convention to Combat Desertification (UNCCD), define the term “desertification” means “land degradation in arid, semi-arid and dry sub-humid (dry lands) areas resulting from various factors, including climatic variations and human activities”. READ MORE

  5. 4. Polynomial trends of vegetation phenology in Sahelian to equatorial Africa using remotely sensed time series from 1983 to 2005

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Mozafar Veysipanah; [2014]
    Keywords : TIMESAT; remote sensing; GIMMS NDVI; Physical Geography and Ecosystem analysis; Sahel; phenology parameters; polynomial trends; vegetation; soil moisture; Earth and Environmental Sciences;

    Abstract : Popular science Our understanding of global warming can be achieved in different ways. One way is to study the phenological parameters of vegetation. READ MORE

  6. 5. Inter-annual memory effects between soil moisture and NDVI in the Sahel

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Yang Zhou; [2013]
    Keywords : Physical Geography and Ecosystem Science; GEM; memory effect; soil moisture; Sahel; rainfall; land cover; soil type; remote sensing; Earth and Environmental Sciences;

    Abstract : The Sahel lies in the semi-arid zone of North Africa between the Sahara Desert to the north and the savannas and rainforest to the south. In the Sahel, the variability of vegetation growth is predominately controlled by moisture reception in the concurrent rainy season. READ MORE