Forecast Origin Dates
J-SCOPE forecast results for the model run beginning in April of 2015 are shown in the first figure. Each panel represents a two month average for the region, averaged over all three model runs of the ensemble. The regional climatology from Venegas et al, 2008 is provided just below for reference, although it covers a slightly larger area than the modeled domain, and has a slightly different color scale.
For waters off the Washington coast, the forecast projects that 10-meter averaged Chlorophyll will be lower than climatology for most of the upwelling season and fall (May - June, November - December) for 2015. The forecast projects the 10-meter averaged Chlorophyll to be higher than the climatology in the end of the summer averaged time-periods (July - August) for 2015, and near average conditions for the rest (September - October). The relative uncertainty is highest on the outer shelf and early in the season (May - August) (40%), and decreases over the year.
For the waters off the Oregon coast, a slightly different pattern is seen. The forecast projects that 10-meter integrated Chlorophyll will be higher than the climatology during all time-average periods (May - December) for 2015. Relative uncertainty follows the same pattern as in Washington.
Similar to 2014 (see 2013, Year in Review), and the January 2015 forecasts, the bloom is forecasted to be closer to the coast.