Sökning: "statistical downscaling"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden statistical downscaling.

  1. 1. Statistical Downscaling of Precipitation from Large-scale Atmospheric Circulation : Comparison of Methods and Climate Regions

    Författare :Fredrik Wetterhall; Sven Halldin; Chong-Yu Xu; Lars-Christer Lundin; Deliang Chen; Hans von Storch; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydrology; Statistical; Downscaling; Precipitation; Large-scale circulation; PCA; TWS; Weather pattern; Regression; Weather generator; Hydrologi; Hydrology; Hydrologi;

    Sammanfattning : A global climate change may have large impacts on water resources on regional and global scales. General circulation models (GCMs) are the most used tools to evaluate climate-change scenarios on a global scale. They are, however, insufficiently describing the effects at the local scale. LÄS MER

  3. 2. The Spatial Distribution of Precipitation in Scania, Southern Sweden. Observations, model simulations and statistical downscaling

    Författare :Maj-Lena Linderson; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; physical geography; Geologi; fysisk geografi; Geology; statistical downscaling; atmospheric circulation; spatial distribution; precipitation; Scania; Sweden;

    Sammanfattning : This thesis focusses on the spatial distribution of precipitation within Scania and on its relation with large-scale climate. The spatial distribution of Scanian precipitation was analysed using a dense rain-gauge network of daily measurements. LÄS MER

  4. 3. Statistical Downscaling of Precipitation in Central Sweden

    Författare :Fredrik Wetterhall; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydrology; Hydrologi;

    Sammanfattning : .... LÄS MER

  5. 4. Hydro-Climatic Variability and Change in Central America : Supporting Risk Reduction Through Improved Analyses and Data

    Författare :Beatriz Quesada-Montano; Sven Halldin; Hugo G. Hidalgo; Ida K. Westerberg; Fredrik Wetterhall; Denis Hughes; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Central America; climate variability; disaster risk reduction; droughts; drought indices; floods; hydrological model; process constraints; statistical downscaling; uncertainty; ungauged basins; water resources.; Hydrology; Hydrologi;

    Sammanfattning : Floods and droughts are frequent in Central America and cause large social, economic and environmental impacts. A crucial step in disaster risk reduction is to have a good understanding of the causing mechanisms of extreme events and their spatio-temporal characteristics. LÄS MER

  7. 5. The Integrated Distributed Hydrological Model, ECOFLOW- a Tool for Catchment Management

    Författare :Nikolay Sokrut; Roger Thunvik; Tuomo Karvonen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydrogeology; Multiple-scale hydrological modelling; Bayesian algorithm; Parameter estimation; Groundwater management; Statistical analysis; Hydrogeologi; Hydrology; Hydrologi;

    Sammanfattning : In order to find effective measures that meet the requirements for proper groundwater quality and quantity management, there is a need to develop a Decision Support System (DSS) and a suitable modelling tool. Central components of a DSS for groundwater management are thought to be models for surface- and groundwater flow and solute transport. LÄS MER