Initial condition will improve the weather forecast and that is the subject in this master thesis.
Will weather observations from aircrat improve the weather prognoses in Norway.
Forecast have been made for observings systems with and without meteorological obserations from airplane AMDAR. The forecast have been integrated 60 hours forward in time using a six-hourly analyse cycle. The model called HIRLAM is a high resloution limited area model that produses short rang forecast for 2-3 days. This is a semi-Lagrangian model with horizontal grib field and vertical hybride coordinate system as resolution.
There have been selected four weather situations. There are two separate studyes, one without singulare wectors and one with singulare vectors.
The role of observations in the SV for the structure and geographical location of the singular vectors will be discussed.