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High-Resolution Dynamical Downscaling of ERA-Interim Using the WRF Regional Climate Model for the Area of Poland. Part 1: Model Configuration and Statistical Evaluation for the 1981–2010 Period

Kryza, M., Wałaszek, K., Ojrzyńska, H., Szymanowski, M., Werner, Malgorzata and Dore, A.J. (2018) High-Resolution Dynamical Downscaling of ERA-Interim Using the WRF Regional Climate Model for the Area of Poland. Part 1: Model Configuration and Statistical Evaluation for the 1981–2010 Period. In: Geoinformatics and Atmospheric Science. Pageoph Topical Volumes . Birkhäuser (Springer International Publishing), Cham, pp. 53-68. ISBN Print: 978-3-319-66091-2 Online: 978-3-319-66092-9

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Abstract

In this work, we present the results of high-resolution dynamical downscaling of air temperature, relative humidity, wind speed and direction, for the area of Poland, with the Weather Research and Forecasting (WRF) model. The model is configured using three nested domains, with spatial resolution of 45 km × 45 km, 15 km × 15 km and 5 km × 5 km. The ERA-Interim database is used for boundary conditions. The results are evaluated by comparison with station measurements for the period 1981–2010. The model is capable of reproducing the main climatological features of the study area. The results are in very close agreement with the measurements, especially for the air temperature. For all four meteorological variables, the model performance captures seasonal and daily cycles. For the air temperature and winter season, the model underestimates the measurements. For summer, the model shows higher values, compared with the measurements. The opposite is the case for relative humidity. There is a strong diurnal pattern in mean error, which changes seasonally. The agreement with the measurements is worse for the seashore and mountain areas, which suggests that the 5 km × 5 km grid might still have an insufficient spatial resolution. There is no statistically significant temporal trend in the model performance. The larger year-to-year changes in the model performance, e.g. for the years 1982 and 2010 for the air temperature should therefore be linked with the natural variability of meteorological conditions.

Item Type: Book Section
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First published as an Open Access journal article: Kryza, M., Wałaszek, K., Ojrzyńska, H. et al. Pure and Applied Geophysics (2017) 174 (2), 511-526 https://doi.org/10.1007/s00024-016-1272-5 - see ePrint URL: https://eprints.worc.ac.uk/8206/

Uncontrolled Keywords: atmospheric physics, meteorology, climate, dynamical downscaling, high resolution, WRF model, Poland
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > Q Science (General)
Divisions: Divisions (2019 and before) > Academic Departments > Institute of Science and the Environment
Related URLs:
Depositing User: Malgorzata Werner
Date Deposited: 14 Jun 2019 13:40
Last Modified: 14 Jun 2019 13:40
URI: https://eprints.worc.ac.uk/id/eprint/8147

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