Slide (460 kb) - Met Office

Stornoway EffectImpact• BSS can give very severe penalty whenclimatology is frequent rain, and it happens• (Low PoP forecast) + (Rain) gives huge penalty• (High PoP forecast) + (Rain) gives only tiny benefit• (Low PoP forecast) + (No rain) gives potential largescore• BUT – it rained every day except two in October• Formulation of score makes it particularlyweather-sensitive in extreme climates© Crown copyright Met Office MOSAC Paper 13.9, 14 Nov 2008