@misc{vanpham_icon_in_2021, 
author={Van Pham, T., Steger, C., Rockel, B., Keuler, K., Kirchner, I., Mertens, M., Rieger, D., Zängl, G., Früh, B.},
title={ICON in Climate Limited-area Mode (ICON release version 2.6.1): a new regional climate model},
year={2021},
howpublished = {journal article},
doi = {https://doi.org/10.5194/gmd-14-985-2021},
abstract = {For the first time, the Limited-Area Mode of the new ICON (Icosahedral Nonhydrostatic) weather and climate model has been used for a continuous long-term regional climate simulation over Europe. Built upon the Limited-Area Mode of ICON (ICON-LAM), ICON-CLM (ICON in Climate Limited-area Mode, hereafter ICON-CLM, available in ICON release version 2.6.1) is an adaptation for climate applications. A first version of ICON-CLM is now available and has already been integrated into a starter package (ICON-CLM_SP_beta1). The starter package provides users with a technical infrastructure that facilitates long-term simulations as well as model evaluation and test routines. ICON-CLM and ICON-CLM_SP were successfully installed and tested on two different computing systems. Tests with different domain decompositions showed bit-identical results, and no systematic outstanding differences were found in the results with different model time steps. ICON-CLM was also able to reproduce the large-scale atmospheric information from the global driving model. Comparison was done between ICON-CLM and the COnsortium for Small-scale MOdeling (COSMO)-CLM (the recommended model configuration by the CLM-Community) performance. For that, an evaluation run of ICON-CLM with ERA-Interim boundary conditions was carried out with the setup similar to the COSMO-CLM recommended optimal setup. ICON-CLM results showed biases in the same range as those of COSMO-CLM for all evaluated surface variables. While this COSMO-CLM simulation was carried out with the latest model version which has been developed and was carefully tuned for climate simulations on the European domain, ICON-CLM was not tuned yet. Nevertheless, ICON-CLM showed a better performance for air temperature and its daily extremes, and slightly better performance for total cloud cover. For precipitation and mean sea level pressure, COSMO-CLM was closer to observations than ICON-CLM. However, as ICON-CLM is still in the early stage of development, there is still much room for improvement.},
note = {Online available at: \url{https://doi.org/10.5194/gmd-14-985-2021} (DOI). Van Pham, T.; Steger, C.; Rockel, B.; Keuler, K.; Kirchner, I.; Mertens, M.; Rieger, D.; Zängl, G.; Früh, B.: ICON in Climate Limited-area Mode (ICON release version 2.6.1): a new regional climate model. Geoscientific Model Development. 2021. vol. 14, no. 2, 985-1005. DOI: 10.5194/gmd-14-985-2021}}