Essays about: "temperature index"

Showing result 6 - 10 of 156 essays containing the words temperature index.

  1. 6. 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. 7. Spatial downscaling of gridded soil moisture products using optical and thermal satellite data: the effects of using different vegetation indices

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Tómas Halldórsson Alexander; [2023]
    Keywords : Physical Geography and Ecosystem Analysis; Remote Sensing; Soil moisture; Downscaling; Vegetation index; Earth and Environmental Sciences;

    Abstract : Soil moisture (SM) plays an important role in the exchange of heat and water between the surface and atmosphere, impacting water and energy cycles and the climate. Satellite remote sensing offers a global-scale estimation of SM; however, the coarse resolutions of satellite SM products, typically ranging from 25-50 km, are unsuitable for regional analysis. READ MORE

  4. 8. Soil Carbon Stocks in Old Growth Forest : Drivers of variability in soil organic carbon stocks in old growth boreal forests

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Elis Ingvarsson; [2023]
    Keywords : old growth forest; boreal; soil organic carbon stocks; climate gradient;

    Abstract : Soil organic carbon (SOC) is the largest carbon pool in terrestrial ecosystems, which plays an important role in climate change by regulating atmospheric carbon dioxide. Sweden’s forest management has led to a decrease in old growth forests. This change in land use can affect SOC levels in these forests. READ MORE

  5. 9. Optical properties in chalcogenide glasses and their temperaturedependence. : Literary survey and experiments.

    University essay from Uppsala universitet/Institutionen för materialvetenskap

    Author : Matilda Karlsson; Saifallah Khaled Ali; Erik Lundqvist; Ask Löthman Ybo; Kalle Sigås; Oscar Törnquist; [2023]
    Keywords : Chalcogenide materials; Chalcogenide glass; Optical properties; Temperature dependence;

    Abstract : This study aimed to investigate methods for determining the temperature dependence of the refractive index and absorption of IR-transparent materials through literary studies and experimental tests. Results from the experimental trials were hard to obtain due to the inherent difficulty of measuring optical properties and yielded only temperature trends of transmittance and reflectance. READ MORE

  6. 10. Evaluation of Heat Mapping Techniques – the Case of Linköping

    University essay from Linköpings universitet/Institutionen för tema; Linköpings universitet/Filosofiska fakulteten

    Author : Pei Zhao; [2023]
    Keywords : correlation analysis; spatial analysis; land surface temperature LST ; mean radiant temperature MRT ; vulnerable population;

    Abstract : Land surface temperature (LST) and mean radiant temperature (MRT) are commonly used as proxies to evaluate urban heat environments. Many scholars use one of them to represent heat exposure when assessing the urban thermal environment. READ MORE