3/14/2023 0 Comments Aladin 2009 running timeThe scientific studies carried out with ALADIN-Climate at CNRM cover: Scientific applications using CNRM-ALADIN in climate mode Use in scenario mode in which the lateral and surface boundary conditions come from global climate models (CNRM-CM5, CNRM-ESM2 ou de GCMs issus de CMIP) to perform historical and scenario simulations (Sanchez-Gomez et al.2014, Sanchez-Gomez and Somot 2018, Daniel et al. Use in perfect boundary condition mode in which the lateral and surface boundary forcings come from global reanalyses (Nabat et al.Use in academic mode (Big-Brother/Little-Brother) in which CNRM-ALADIN is driven by CNRM-ARPEGE at the same resolution and with the same physics (Colin et al.2019, 2021) or in a fully-coupled regional climate system model CNRM-RCSM including the representation of surface hydrology and of the regional ocean (Sevault et al. Use in coupled mode with interactive aerosol scheme ( ALADIN-TACTIC, Nabat et al.Use in forced mode by sea surface temperature and sea ice coverage (Herrmann et al.Frequent use of the spectral nudging option (Radu et al.Simulations at very high résolution (12 km, Déqué and Somot 2008, Colin et al.Simulations at very low resolution (125 or 150 km, Herrmann et al.2015), North America (Lucas-Picher et al. 2014), Martinique, Nouvelle Calédonie, Polynésie Française (Hopuare et al. 2019), La Réunion, Guadeloupe (Cantet et al. 2019), South-East Atlantic Ocean (Mallet et al. Dedicated simulations for geographical areas of interest: metropolitan France (Colin et al.Contribution to the version 2020 of the web portal of the French national climate service ( DRIAS) and to the European climate service ( Climate Data Store of C3S).Contribution of CNRM to the international programme WCRP CORDEX ( lien) in particular over the Mediterranean and European domains ( Med-CORDEX, Euro-CORDEX).In climate mode, CNRM-ALADIN can be used in different configurations: In its simplest version, CNRM-ALADIN represent the atmosphere component of the climate as well as the land surface and its interactions with the atmosphere thanks to the SURFEX-ISBA model. Therefore they allow to explore the climate representation at very fine scale.Īt CNRM, we are currently developing and using the version 6 of CNRM-ALADIN that is based on cycle 37t1 of ARPEGE-IFS and on the version 6 of the CNRM climate physics that is common to ARPEGE-Climat, CNRM-CM6 or CNRM-ESM2, all global models used in CMIP6. The main advantage of RCMs is to limit the numerical cost of simulations with respect to global climate model at the same resolution. In the climate model family of CNRM, ALADIN can be seen as the limited area version of the ARPEGE-Climate model with which it shares most of the dynamics and physics or as the hydrostatique version of AROME. Since the beginning of the years 2000s, the ALADIN model is used at CNRM as a Regional Climate Model (RCM) with the name CNRM-ALADIN (or ALADIN-Climat). The numerical model ALADIN (Aire Limitée Adaptation dynamique Développement InterNational) is a limited area bi-spectral model.
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