Editing IPCC:AR6/WGI/Chapter-Atlas (section)

==== Atlas.7.1.3 Assessment of Model Performance ====

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The ability of climate models to simulate the climate in this region has improved in many key aspects ( [[#Karmalkar--2013|Karmalkar et al., 2013]] ; [[#Fuentes-Franco--2014|Fuentes-Franco et al., 2014]] , [[#Fuentes-Franco--2015|Fuentes-Franco et al., 2015]] , [[#Fuentes-Franco--2017|Fuentes-Franco et al., 2017]] ; [[#Vichot-Llano--2014|Vichot-Llano et al., 2014]] ; [[#Vichot-Llano--2017|Vichot-Llano and Martínez-Castro, 2017]] ; [[#Martínez-Castro--2018|Martínez-Castro et al., 2018]] ). Particularly relevant for this region are increased model resolution and a better representation of the land surface processes ( ''high confidence'' ) ''.''

Regional climate models (RCMs) forced with reanalyses and atmosphere-only global climate models provide simulations with a reasonably good performance over the core North American Monsoon region, mostly in NCA ( ''high confidence'' ) ( [[#Bukovsky--2013|Bukovsky et al., 2013]] ; [[#Cerezo-Mota--2016|Cerezo-Mota et al., 2016]] ). RCMs also reproduce the seasonal spatial patterns of temperature and the bimodal rainfall characteristics of the NCA, SCA and CAR ( ''high confidence'' ) ( [[#Karmalkar--2013|Karmalkar et al., 2013]] ; [[#Centella-Artola--2015|Centella-Artola et al., 2015]] ; [[#Martínez-Castro--2018|Martínez-Castro et al., 2018]] ; [[#Cavazos--2020|Cavazos et al., 2020]] ; [[#Vichot-Llano--2021b|Vichot-Llano et al., 2021b]] ), though in some sub-regions specific models overestimate and shift the month of the maxima. RCM simulations in the region do not necessarily improve with the size of the domain, as important features of the regional circulation and key rainfall climate features, such as the CLLJ and MSD, are well represented for a variety of domains of different sizes ( ''high confidence'' ) ( [[#Centella-Artola--2015|Centella-Artola et al., 2015]] ; [[#Martínez-Castro--2018|Martínez-Castro et al., 2018]] ; [[#Cabos--2019|Cabos et al., 2019]] ; [[#Cavazos--2020|Cavazos et al., 2020]] ; [[#Vichot-Llano--2021b|Vichot-Llano et al., 2021b]] ).

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