cmip_evaluation

• Main Authors: Luana Borato (11160873), Antonio Fernando Harter Fetter Filho (11828077), Paula Gomes da Silva (10477242), Fernando Javier Mendez Incera (11828081), Antonio Henrique da Fontoura Klein (4647631)
• Format: Text
• Language: unknown
• Published: 2021
• Subjects: Atmospheric Sciences; Climate Change Processes; Meteorology; Weather type; Global Climate Models; South Atlantic; Climate change; South Atlantic Ocean
• Online Access: https://doi.org/10.6084/m9.figshare.17169116.v1

Climate change is expected to affect the frequency of regional atmospheric circulation patterns and, consequently, it will result in changes in meteorological and oceanographic conditions. Here, we present a dataset that consists of the frequency of the main atmospheric patterns (weather types) over the South Atlantic Ocean in the past and future. We used a reanalysis hindcast to identify 25 weather types representing the typical synoptic conditions in the region over the past 32 years. We verified the performance of the CMIP5 and CMIP6 projections on describing the frequency of these main weather types over the South Atlantic and assessed the potential changes in these frequencies in the future. The scenarios project variations of up to 3% in the frequency of some weather types over the 21st century. The data set and the performance analysis presented here can be used to support future statistical analysis, such as statistical downscaling experiments of oceanographic variables and studies on climate variations in the South Atlantic.