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- W4249651454 abstract "Abstract. The Baltic Sea is a seasonally ice covered marginal sea located in a densely populated area in northern Europe. Severe sea ice conditions have the potential to hinder the intense ship traffic considerably. Thus, sea ice fore- and nowcasts are regularly provided by the national weather services. Typically, several ice properties are allocated, but their actual usefulness is difficult to measure and the ship captains must determine their relative importance and relevance for optimal ship speed and safety ad hoc. The present study provides a more objective approach by comparing the ship speeds, obtained by the Automatic Identification System (AIS), with the respective forecasted ice conditions. We find that, despite an unavoidable random component, this information is useful to constrain and rate fore- and nowcasts. More precisely, 62–67% of ship speed variations can be explained by the forecasted ice properties when fitting a mixed effect model. This statistical fit is based on a test region in the Bothnian Bay during the severe winter 2011 and employes 15 to 25 min averages of ship speed." @default.
- W4249651454 created "2022-05-12" @default.
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- W4249651454 date "2014-07-15" @default.
- W4249651454 modified "2023-09-26" @default.
- W4249651454 title "Ice and AIS: ship speed data and sea ice forecasts in the Baltic Sea" @default.
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- W4249651454 doi "https://doi.org/10.5194/tcd-8-3811-2014" @default.
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