Essays about: "spectroradiometer"

Showing result 1 - 5 of 23 essays containing the word spectroradiometer.

1. 1. Changes in July albedo and its relationship with EVI over the last two decades in the Swedish alpine region

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Vera Grönvik Hende; [2023]
   Keywords : Shortwave albedo; Enhanced Vegetation Index EVI ; Alpine vegetation; Scandes; Surface albedo feedback; MODIS; Earth and Environmental Sciences;

   Abstract : Vegetation in the subarctic is expected to respond to climate warming as its growth becomes less temperature limited. This has previously been recorded in the form of treeline advances and increasing shrub cover. Changes in vegetation cover may accelerate warming due to a decrease in summer albedo, in what is termed surface albedo feedback. READ MORE

3. 2. Short wavelength UV–LED photoinitiated radical polymerization of acrylate–based coating systems—A comparison with conventional UV curing.

   University essay from Uppsala universitet/Strukturkemi

   Author : Olof Torfgård; [2021]
   Keywords : UV; LED; UVC; UVB; UVA; paint; acrylate; curing; Sherwin–Williams; ATR-FTIR; spectroradiometer; photoinitiator; the mercury arc lamp;

   Abstract : The present work was performed at Sherwin–Williams Sweden group AB with the objective of comparing short-wavelength light emitting diodes (UVB/UVC) with the conventional mercury arc lamp as a curing method of acrylate-based, UV-paint undergoing free-radical polymerization when exposed to UV-radiation. Due to environmental and health risks, mercury-doped radiation sources will be phased out in the near future, according to the United Nations Minamata convention, hence new alternatives are needed. READ MORE

4. 3. Detection of slush on the Greenland Ice Sheet using Moderate Resolution Imaging Spectroradiometer (MODIS) satellite imagery

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Viktor Wu; [2020]
   Keywords : slush; Greenland Ice Sheet GrIS ; surface mass balance SMB ; sea level rise SLR ; satellite imagery; Earth and Environmental Sciences;

   Abstract : Sea Level Rise (SLR) is a growing global concern that is heavily influenced by a warming climate. Because of a potentially large added mass to the ocean through ice melt, the Greenland Ice Sheet (GrIS) plays an important role in the contribution to SLR. READ MORE

5. 4. Nitrogen Uptake by Vegetation in the Wakkerstroom Wetland, South Africa

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Emma Dufbäck; [2019]
   Keywords : nitrogen uptake; NPP; wetland; Multi-angle Imaging SpectroRadiometer MISR ; Light Use Efficiency LUE ; remote sensing; Phragmites australis; Typha capensis; South Africa; kväveupptag; NPP; våtmark; Multi-angle Imaging SpectroRadiometer MISR ; Light Use Efficiency LUE ; fjärranalys; Phragmites australis; Typha capensis; Sydafrika;

   Abstract : The lack of proper wastewater treatment inhibits the social and economic development in many communities. The South African town Wakkerstroom is an example where wastewater is first treated before it is released. READ MORE

6. 5. UAV based hyperspectral grassland monitoring in an alpine shallow erosion area : lessons learnt from classifying vegetation indicating shallow erosion risk

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : John Peitz; [2019]
   Keywords : Physical Geography; Ecosystem Analysis; Shallow Erosion; Blaiken; UAV; Hyperspectral Imaging; Alps; Grassland; Spectral Signatures; Geomatics; Earth and Environmental Sciences;

   Abstract : UAV based hyperspectral grassland monitoring in an alpine shallow erosion area Recent research in the Alps found that a reduction in grassland management is correlated to an increase in a certain type of shallow erosion areas called blaiken. This change also entails changes to the dominant grassland vegetation. READ MORE