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| DOI | 10.1007/s00382-024-07216-z |
| On the relation of CMIP6 GCMs errors at RCM driving boundary condition zones and inner region for Central Europe region | |
| 发表日期 | 2024 |
| ISSN | 0930-7575 |
| EISSN | 1432-0894 |
| 英文摘要 | Global climate models (GCMs) are essential for studying the climate system and climate change projections. Due to their coarse spatial resolution, downscaling is necessary on the regional scale. Regional climate models (RCMs) represent a standard solution for this issue. Nevertheless, the boundary conditions provided by GCMs unavoidably influence the outputs of RCMs. This study evaluates CMIP6 GCMs regarding the variables relevant to RCM boundary conditions. Particular focus is on the simulation of CNRM-ESM2-1, which is being used as a driving model for convection-permitting ALARO-Climate RCM, used as one source feeding new Czech climate change scenarios. The analysis is conducted over the boundaries and inside the RCM integration domain. Firstly, an evaluation of CFSR and ERA5 reanalyses against radiosondes is performed to choose an appropriate reference dataset for upper air variables. A high correlation between the two studied reanalysis and radiosondes was revealed, and it slightly decreases at the upper tropospheric levels. ERA5 is then chosen as the reference for the boundary analysis. Over the inner region, the simulated mean annual cycle of impact-relevant variables is validated against E-OBS. The CNRM-ESM2-1 performs well regarding near-surface variables over the Czech Republic, but it exhibits larger errors along the boundaries, especially for air temperature and specific humidity. The GCM performance in simulating the upper air atmospheric variables used as RCM boundary conditions relates rather weakly to the GCM performance in simulating the near-surface parameters in the inner region in terms of parameters relevant for impact studies. |
| 英文关键词 | Boundary conditions; Global climate models; CMIP6; Model assessment; CNRM-ESM2-1; Radiosondes |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001200470000002 |
| 来源期刊 | CLIMATE DYNAMICS
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/289421 |
| 作者单位 | Charles University Prague |
| 推荐引用方式 GB/T 7714 | . On the relation of CMIP6 GCMs errors at RCM driving boundary condition zones and inner region for Central Europe region[J],2024. |
| APA | (2024).On the relation of CMIP6 GCMs errors at RCM driving boundary condition zones and inner region for Central Europe region.CLIMATE DYNAMICS. |
| MLA | "On the relation of CMIP6 GCMs errors at RCM driving boundary condition zones and inner region for Central Europe region".CLIMATE DYNAMICS (2024). |
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