Abstract
<p>Coastal activities are impacted by wind speed and wave height regimes, and extreme events can cause severe damage to structures along the coastline. Over the southwestern South Atlantic Ocean, several oil and gas offshore facilities are exposed to such events, therefore the study of wind speed climate is of great importance. Given the coarse horizontal resolution of Global Climate Models (GCMs), local studies benefit from the nesting Regional Climate Models (RCMs) in global domains for a better representation of regional processes. Several regional climate studies focus on the evaluation of RCMs for mean climate conditions of temperature, precipitation and pressure. The present study aims to evaluate wind speed results from two different RCMs: Regional Climate Model system version 4 (RegCM4) and the Weather Research and Forecasting (WRF). Two types of experiments were conducted: (1) hindcasts with reanalysis data from ERA-Interim and CFSR; (2) historical climate simulations using HadGEM2-ES and MPI-ESM-MR. Output from all simulations were evaluated with a satellite-based dataset from the Cross-Calibrated Multi-Platform wind product (CCMP), given the lack of observational data over coastal and oceanic regions. Preliminary results point to an overestimation (underestimation) of wind speed in all RegCM4 (WRF) simulations, with a more pronounced difference for upper quantile values.</p>
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