Essays about: "reflectance"

Showing result 16 - 20 of 125 essays containing the word reflectance.

1. 16. Evaluating forest wildfire effect on tree increment patterns for boreonemoral forests in Sweden: A pilot study using remote sensing

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Joanna Eaton; [2022]
   Keywords : Physical Geography and Ecosystem analysis; Remote sensing; Sentinel-2A; Forest wildfires; dNBR; NDVI; dNDVI; Dendrochronology; Atmospheric science and biogeochemical cycles; Earth and Environmental Sciences;

   Abstract : The release of anthropogenic greenhouse gases (GHGs) has substantially increased the global mean surface air temperature. Increases in global mean surface air temperature will lead to warmer and drier conditions, promoting more frequent, long-lasting, intense forest wildfires. READ MORE

3. 17. Microplastics in the Gulf of Bothnia, SwedenA comparison between Österfjärden and Örefjärden.

   University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

   Author : Emma Overgaard; [2021]
   Keywords : IR; Microplastic; pollution; polymer composition; surface water; visual characterization;

   Abstract : Microplastics are emerging pollutants in the marine environment, including a range of polymers modified by varying quantities of additives and sorbed pollutants, differing in size, colour, and shape. This study focuses on characterization and quantification through visual characterization of microplastics >300 μm in surface water and at 5-meter depth in the Gulf of Bothnia. READ MORE

4. 18. Using Sentinel-2 Satellite Images to Estimate Traits of Forage Grasslands

   University essay from SLU/Dept. of Agricultural Research for Northern Sweden

   Author : Niklas Zeiner; [2021]
   Keywords : Remote sensing; Forage grasslands; Sentinel-2; Dry matter yield; Canopy average height; Total leaf chlorophyll content; Partial least squares; Support vector machines;

   Abstract : In this project, regression models based on data from field measurements and spectral information extracted from satellite imagery were used to estimate traits of forage grasslands; dry matter yield, canopy average height and total leaf chlorophyll. Four fields at SLUs Röbäcksdalen field station were sampled on 22 occasions and a total of 198 samples, including measurement of the highest plant, canopy height, leaf chlorophyll content, canopy spectral reflectance and biomass were collected. READ MORE

5. 19. Using blue light reflectance from high-resolution images (6000 dpi) of Scots pine tree rings to reconstruct three centuries of Scottish summer temperatures

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Alice De Schutter; Karin Markendahl; [2021]
   Keywords : summer temperature reconstruction; climate change; Scotland; Scots pines; ultra-high image resolution; blue intensity; rekonstruktion av sommartemperatur; klimatförändringar; Skottland; skotska tallar; hög bildupplösning; blå intensitet;

   Abstract : Advances in scanner technology have made it possible to obtain high resolution (6000 dpi) images of tree samples. Due to the images’ increased capability of resolving anatomical wood structures, the new technology could be of benefit to dendroclimatology.  This study attempts to expand on Rydval et al. READ MORE

6. 20. Utvärdering av pulsoximeterprob med reflektansteknik på hund och katt under anestesi

   University essay from SLU/Dept. of Clinical Sciences

   Author : Filippa Klippel; Amelie Axelsson; [2021]
   Keywords : Syremättnad; hjärtfrekvens; pletysmografi; transmissionteknik; pulsoximetri; djursjukvård;

   Abstract : Arteriell syremättnad i blodet är en livsviktig parameter att monitorera vid anestesi och intensivvård inom djursjukvård. Otillräcklig syresättning kan leda till hypoxi, syrebrist i vävnaden, och åtgärdas det inte kan det i värsta fall medföra att patienten avlider. READ MORE