The accuracy of some meteorological parameters modeling for the southern Baltic Sea area – a comparative study

As part of PROZA project at the Institute of Oceanography, University of Gdańsk, work is being carried out on launching an integrated wave-current model for the Baltic Sea region. Wave WAM and current POM models used for this pur-pose, are supplied with data from numerical weather forecasts from the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS) model operating at ICM. The accuracy of forecasts of meteorological parameters directly impacts the forecasts of wind wave and sea current fields. The accuracy of results of short term weather forecasts generated by COAMPS and Unified Model (UMPL) operating at ICM, was assessed for two locations on the coast of Baltic Sea in Poland. For the two studied locations (Łeba and Hel), air temperature is forecasted with highest accuracy (r>90%), and wind direction and velocity forecasts are characterized by lower accuracy (r<85%)     ...

Forecasting the potential evpotranspiration In the orchard with thr numerical weather forecast

Numerical weather forecasts have reached the acuraccy and reliability level that their results can be used as a replacement for the measurements of weather parameters when the availability of the latter is limited. Here we present the application of the COAMPS numerical weather forecast model to prediction of the potential evapotranspiration ET0. ET0 is computed using the data from the model. Also a hybrid model with part of the data coming from the model and part of the data from the measurements was used. Additionally a machine learning methods were used to improve model skill. The results show that application of the simulated data gives very good agreement of the predicted ET0 with that computed using measurement data. Hybrid models are slightly better than the purely simulation-based and machine learning allows for further improvement od the ET0 models.     ...