Essays about: "NDVI Time series"

Showing result 21 - 25 of 33 essays containing the words NDVI Time series.

  1. 21. Using digital repeat photography for monitoring the regrowth of a clear-cut area

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Ludvig Forslund; [2014]
    Keywords : Physical Geography and Ecosystem Science; scene illumination; PhenoCam; Norunda; near-surface remote sensing; NDVI; digital images; Chromatic coordinates; clear-cut; Earth and Environmental Sciences;

    Abstract : Sammanfattning Digitala övervakningskameror har tidigare använts inom fenologisk forskning för att kunna mäta grönskan i trädkronor. Man har under en längre tid kunnat koppla lövträdets årscykel till klimatförändringar och på så sätt haft ett starkt incitament att studera sambandet. READ MORE

  3. 22. 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

  4. 23. Comparison of MODIS-Algorithms for Estimating Gross Primary Production from Satellite Data in semi-arid Africa

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Martin Nilsson; [2013]
    Keywords : Leaf Area Index; LAI; Enhanced Vegetation Index; EVI; Normalized Vegetation Index; NDVI; Gross Primary Production; GPP; remote sensing; MODIS; FPAR; Fraction of Photosynthetically Active Radiation; Eddy Covariance; Africa; physical geography; Earth and Environmental Sciences;

    Abstract : The climatic patterns of the world are changing and with them the spatial distribution of global terrestrial carbon; the food and fiber of the world and in itself an important factor in the changing climate. Knowledge of how the terrestrial carbon stock is changing, its distribution and quantity, is important in understanding how the patterns of the world are changing and large scale models using remotely sensed data have emerged for this purpose. READ MORE

  5. 24. 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

  6. 25. Mapping moth induced birch forest damage in northern Sweden, with MODIS satellite data

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Kristian Morin; [2013]
    Keywords : physical geography; topography; TIMESAT; Epirrita autumnata; geometrids; time series; MODIS; remote sensing; geography; birch forest; Earth and Environmental Sciences;

    Abstract : Large synchronous outbreaks of herbivory geometrids is regularly occurring at 9-10 years intervals when they reach peak densities in the Fennoscandian birch forest, in the northern part of Scandinavia (Tenow 1972, Bylund 1995). Climate change is likely to increase the frequency, intensity and extent of the outbreak due to increasing temperatures in the area (Callaghan 2010, Heliasz et al. READ MORE