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  Part III. Location and Frequency of Highly Reflective Clouds: Normalized Monthly Data

Part III. Location and Frequency of Highly Reflective Clouds:
Normalized Monthly Data


These maps use numbers and letters in grid squares to show actual (or normalized) numbers of days per month with highly reflective clouds (HRC) for each month from January 1971 to December 1985 (180 months).

HRC data were normalized by the number of days in the month for which satellite data were available. For instance, if only 20 days of satellite data were available for a particular grid square during a 30-day month, and HRC occurrred on 10 days, the number shown on the maps is 15, or 10/20 x 30 days. In other words, since HRCs were recorded on half the days for which there were data, one would expect half the days in a full month to have HRC, assuming that the 20 days sampled were representative of the whole month. Relatively few grid square values were affected by the normalizing procedure.

Color code for numbers and letters on the maps in Part III
Number/letter     Color
-----------------------
1-2               Black
3-5               Green
6-8               Blue 
9                 Red  
A (=10)           Red  
B (=11)           Red  
C-K (=12-20)      Black
X (>=21)          Black


NORMALIZED MONTHLY HRC DATA

Jan: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1971 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1972 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1973 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1974 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1975 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1976 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1977 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1978 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1979 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1980 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1981 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1982 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1983 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1984 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jan: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Feb: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Mar: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Apr: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

May: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jun: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Jul: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Aug: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Sep: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Oct: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Nov: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea

Dec: 1985 Atlantic and Indian Oceans Pacific Ocean and Caribbean Sea