Essays about: "NOAA"

Showing result 6 - 10 of 23 essays containing the word NOAA.

1. 6. Retrieval of Cloud Top Pressure

   University essay from Linköpings universitet/Institutionen för datavetenskap; Linköpings universitet/Tekniska fakulteten

   Author : Claudia Adok; [2016]
   Keywords : neural networks; multilayer perceptron; random forest regression; cloud top pressure; cloud top height;

   Abstract : In this thesis the predictive models the multilayer perceptron and random forest are evaluated to predict cloud top pressure. The dataset used in this thesis contains brightness temperatures, reflectances and other useful variables to determine the cloud top pressure from the Advanced Very High Resolution Radiometer (AVHRR) instrument on the two satellites NOAA-17 and NOAA-18 during the time period 2006-2009. READ MORE

3. 7. 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

4. 8. Hybrid Rainfall Estimates from Satellite, Lightning and Ground Station Data in West Africa

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Henrik Enbäck; Charlotta Eriksson; [2015]
   Keywords : rainfall estimates; West Africa; lightning; satellite; nederbördsestimat; Västafrika; blixtar; satellit;

   Abstract : Most of the working population in Ghana are farmers. It is of importance for them to know where and when precipitation will occur to prevent crop losses due to droughts and floodings. In order to have a sustainable agriculture, improved rainfall forecasts are needed. One way to do that is to enhance the initial conditions for the rainfall models. READ MORE

5. 9. A study on Extraction of Natural Cities from the Nightlight Imagery Using Head/tail breaks method

   University essay from Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

   Author : Sirui Wu; [2013]
   Keywords : nightlight imagery; extraction of natural cities; head tail break; threshold; power law;

   Abstract : With the high development of economic and demand for city research, an issue of detecting city boundaries plays an extremely important role in urbanization that promotes the progress of human civilization. Some critical applications such as land use, urban planning and city sprawl have been constantly discussed, which rely on the acquisition of city areas. READ MORE

6. 10. 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