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- W4385201258 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Heat waves are among the most severe climate extreme events. In this study, we address the impact of increased model resolution and tailored model settings on the reproduction of these events by evaluating different regional climate model outputs for Germany and the near surroundings between 1980–2009. Both, outputs of an ensemble of six EURO-CORDEX models of 12.5 km grid resolution and outputs from a high resolution (5 km) WRF run are employed. The latter was especially tailored for the study region regarding the physics configuration. We analyze the reproduction of maximum temperature, number of heat wave days, heat wave characteristics (frequency, duration and intensity), the 2003 major event and trends in the annual number of heat waves. E-OBS is used as reference and we imply Taylor diagram, Mann-Kendall trend test, spatial efficiency metric and cumulative heat index as a measure for intensity. Averaged over the domain, heat waves occurred about 31 times in the study period with an average duration of 4 days and average heat excess of 10 °C. Maximum temperature was reproduced reasonably well by all models. Despite the same forcing, the models exhibited a large spread in the heat wave reproduction. The domain mean conditions of heat wave frequency and duration were captured reasonably well, but intensity was reproduced weakly. The spread was particularly pronounced for the 2003 event, indicating the difficulty of models to reproduce single major events. All models underestimated the spatial extent of the observed increasing trends. WRF mostly did not perform significantly better than the other models. We conclude that increased model resolution does not add a significant value to heat wave simulation if the base resolution is already relatively high. Tailored model settings seem to play a minor role. The partly distinct differences in performance, however, highlight that the choice of model can be crucial." @default.
- W4385201258 created "2023-07-25" @default.
- W4385201258 date "2023-07-24" @default.
- W4385201258 modified "2023-10-03" @default.
- W4385201258 title "Interesting paper with some flaws and a very limited significance" @default.
- W4385201258 doi "https://doi.org/10.5194/nhess-2023-91-rc2" @default.
- W4385201258 hasPublicationYear "2023" @default.
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