Climate Services Toolbox (CSTools) v4.0: from climate forecasts to climate forecast information

Abstract. Despite the wealth of existing climate forecast data, only a small part is effectively exploited for sectoral applications. A major cause this lack integrated tools that allow translation data into useful and skillful information. This barrier addressed through development an R package. Climate Services Toolbox (CSTools) easy-to-use toolbox designed built to assess improve quality forecasts seasonal multi-annual scales. The package contains process-based, state-of-the-art methods calibration, bias correction, statistical stochastic downscaling, optimal combination, multivariate verification, as well basic advanced obtain tailored products. Due modular design in individual functions, users can develop their own post-processing chain shown use cases presented paper, including analysis extreme wind speed event, generation snow depth based on SNOWPACK model, temperature precipitation be used input impact models.