Sökning: "numerical weather prediction"
Visar resultat 1 - 5 av 36 avhandlingar innehållade orden numerical weather prediction.
1. Boundary Layer Parametrization in Numerical Weather Prediction Models
Sammanfattning : Numerical weather prediction (NWP) and climate models have shown to have a challenge to correctly simulate stable boundary layers and diurnal cycles. This aim of this study is to evaluate, describe and give suggestions for improvements of the descriptions of stable boundary layers in operational NWP models. Two papers are included. LÄS MER
2. Data assimilation for numerical weather prediction systems : a 25 year perspective
Sammanfattning : This thesis deals with the assimilation of meteorological observations in numerical weather prediction models. A selection of research and development contributions by the author during 25 years is included and discussed in the light of international development efforts up to the present time. LÄS MER
3. Ensemble Kalman filters in mesoscale limited-area numerical weather prediction
Sammanfattning : .... LÄS MER
4. Artificial intelligence in weather and climate prediction : Learning atmospheric dynamics
Sammanfattning : Weather and climate prediction is dominated by high dimensionality, interactions on many different spatial and temporal scales and chaotic dynamics. This makes many problems in the field quite complex ones, and also state-of-the-art numerical models are - despite their immense computational costs - not sufficient for many applications. LÄS MER
5. On the choice of initial state in numerical weather prediction models
Sammanfattning : This thesis deals with the problem of initializing numerical weather prediction models based on the primitive equation system. The normal mode approach is used i.e. the variables are projected on the eigensolutions of the linearized model equations. LÄS MER
