SeaVal: Validation of Seasonal Weather Forecasts

Provides tools for processing and evaluating seasonal weather forecasts, with an emphasis on tercile forecasts. We follow the World Meteorological Organization's "Guidance on Verification of Operational Seasonal Climate Forecasts", S.J.Mason (2018, ISBN: 978-92-63-11220-0, URL: <>). The development was supported by the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 869730 (CONFER). A comprehensive online tutorial is available at <>.

Version: 1.2.0
Depends: R (≥ 2.10), data.table, ggplot2
Imports: ggnewscale, ggplotify, lifecycle, maps, ncdf4, patchwork, RColorBrewer, scales, stringr
Published: 2024-06-14
Author: Claudio Heinrich-Mertsching ORCID iD [aut, cre, cph], Celine Cunen [ctb], Michael Scheuerer [ctb]
Maintainer: Claudio Heinrich-Mertsching <claudio.heinrich at>
License: GPL (≥ 3)
NeedsCompilation: no
Materials: README NEWS
CRAN checks: SeaVal results


Reference manual: SeaVal.pdf


Package source: SeaVal_1.2.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): SeaVal_1.2.0.tgz, r-oldrel (arm64): SeaVal_1.2.0.tgz, r-release (x86_64): SeaVal_1.2.0.tgz, r-oldrel (x86_64): SeaVal_1.2.0.tgz
Old sources: SeaVal archive


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