Verifying reliability of selected meteorological elements in the GFS and WRF models in Poznań
Loading...
Date
2017
Authors
Advisor
Editor
Journal Title
Journal ISSN
Volume Title
Publisher
Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk
Title alternative
Abstract
The article presents the results of a study comparing the reliability of the GFS and WRF numerical
models using different spatial resolutions. The study was carried out on the basis of a series of model and
observational data for a period of 13 months from January 2015 to January 2016 with computational grid
coordinates corresponding to the location of Poznań. Forecast quality was compared for basic meteorological
parameters – air temperature, atmospheric pressure and wind speed. The quality of forecasts for the meteorological
parameters included in the study decreased systematically in subsequent time steps in the case of both the
WRF and the GFS models. It improved in the initial hours of simulation after a higher resolution was applied
for the computational grid in the WRF model (1,75 km) as can be seen from the minimal Mean Error values
and very high correlation. For forecast time t = 0–60 h, WRF generated better results than GFS, especially
when it comes to the quality of forecasting the atmospheric pressure field.
Description
Sponsor
Keywords
forecast verification, GFS, WRF, air temperature, air pressure, wind speed, Poznań
Citation
Badania Fizjograficzne, Seria A, Tom 68, 2017, s. 33-46.