Sökning: "siktprognos"

Hittade 2 uppsatser innehållade ordet siktprognos.

1. 1. Improving Visibility Forecasts in Denmark Using Machine Learning Post-processing

   Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

   Författare :August Thomasson; [2023]
   Nyckelord :visibility forecast; fog; machine learning; numerical weather predicition; XGBoost; Random Forest; siktprognos; dimma; maskininlärning; numerisk vädermodell; XGBoost; Random Forest;

   Sammanfattning : Accurate fog prediction is an important task facing forecast centers since low visibility can affect anthropogenic systems, such as aviation. Therefore, this study investigates the use of Machine Learning classification algorithms for post-processing the output of the Danish Meteorological Institute’s operational Numerical Weather Prediction (NWP) model to improve visibility prediction. LÄS MER

3. 2. Sikt i snöfall : En studie av siktförhållanden under perioder med snöfall

   Magister-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

   Författare :Jesper Blomster; [2007]
   Nyckelord :sikt i snöfall; siktmätningar; siktprognos;

   Sammanfattning : The purpose of this thesis is to study the visibility conditions during snowfall events in order to study the possibility of improvement of the visibility forecast currently in use. Measurement data for visibility and precipitation rate was gathered from Storöns automatic weather station at Storön in the Kalix archipelago situated in most northern part of the Bay of Bottnia. LÄS MER