PPT Slide

GPI Statistics from Five Oceanic Climatic Regions

Cumulative fractional Tb coverage below

specified Tb thresholds is normalized by the

value at 255K.

GATE and EPAC show substantially fewer

clouds penetrating colder than 215K and pro-

portionately more clouds warmer than 235K

Correlations between cumulative Tb cover

and rainfall tend to maximize near 225K.

(For individual levels correlations

maximize at 205 to 215K.)

Weakened correlations at Tb in GATE

and EPAC are due to seasonal effects of

non-convective cirrus.