TY  - JOUR
A1  - Heinemann, Günther
A1  - Schefczyk, Lukas
A1  - Zentek, Rolf
A1  - Brooks, Ian M.
A1  - Dahlke, Sandro
A1  - Walbröl, Andreas
T1  - Evaluation of Vertical Profiles and Atmospheric Boundary Layer Structure Using the Regional Climate Model CCLM during MOSAiC
T2  - Meteorology
N2  - Regional climate models are a valuable tool for the study of the climate processes and climate change in polar regions, but the performance of the models has to be evaluated using experimental data. The regional climate model CCLM was used for simulations for the MOSAiC period with a horizontal resolution of 14 km (whole Arctic). CCLM was used in a forecast mode (nested in ERA5) and used a thermodynamic sea ice model. Sea ice concentration was taken from AMSR2 data (C15 run) and from a high-resolution data set (1 km) derived from MODIS data (C15MOD0 run). The model was evaluated using radiosonde data and data of different profiling systems with a focus on the winter period (November–April). The comparison with radiosonde data showed very good agreement for temperature, humidity, and wind. A cold bias was present in the ABL for November and December, which was smaller for the C15MOD0 run. In contrast, there was a warm bias for lower levels in March and April, which was smaller for the C15 run. The effects of different sea ice parameterizations were limited to heights below 300 m. High-resolution lidar and radar wind profiles as well as temperature and integrated water vapor (IWV) data from microwave radiometers were used for the comparison with CCLM for case studies, which included low-level jets. LIDAR wind profiles have many gaps, but represent a valuable data set for model evaluation. Comparisons with IWV and temperature data of microwave radiometers show very good agreement.
KW  - Arctic
KW  - sea ice
KW  - regional climate model
KW  - verification
KW  - atmospheric boundary layer
KW  - MOSAiC
KW  - CCLM
KW  - Arktis
KW  - Meereis
KW  - Klima
KW  - Modell
KW  - Atmosphärische Grenzschicht
Y1  - 2023
UR  - https://ubt.opus.hbz-nrw.de/frontdoor/index/index/docId/2100
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:385-1-21004
VL  - 2023
IS  - Band 2, Heft 2
PB  - MDPI
CY  - Basel
ER  -