Forecasts for
located in or near




Wet Day Frequency Forecast for
Target Date Issue Date


Probability of Exceedance

Probability Distribution

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Forecast Verification

Wet Day Frequency Forecast

Wet Day Frequency Forecasts in July-September season.

The default map shows, for the latest forecast made, the more likely seasonal wet days total in the season. Users can use the Field menu to express the forecast in different ways, as follows:

The Layers button, showing when mousing over the map, will reveal in/active layers on the map. The Skill map is inactive by default and can be activated here, to be overlaid over the forecast map.

Clicking on the map will reveal information about the location clicked, as well as the full forecast distribution at that given location, compared with the historical distribution. Cumulative full distribution of the forecast (red) together with the climatological distribution (blue and black) for the forecast in view on the map shows under Probability of Exceedance, as well as the full probability distribution under Probability Distribution. If the Skill Layer is activated, a 3rd graph will show to present the comparison of hindcast performance versus actually observed seasonal total number of wet days.

Dataset Documentation

Spatial Field predictand:Seasonally averaged over July to September, 0.5˚ spatial resolution, precipitation from UEA CRU (TS3p23) rainfall.

Instructions

Helpdesks

Contact help@iri.columbia.edu with any technical questions or problems with this Map Room.