Surface-based
Cloud Climatology
      Ocean Atlas
      Land Atlas
      Arctic Trends
      Ocean Trends
      Land Trends
      Diurnal Cycles

Introduction

Publications

Digital Databases

OCEAN MAPS
Total Cloud Cover
Completely Clear Sky
   * Frequency of Occurrence
         - Annual
            5° Maps: Day, Night, Average
            5° Data: Day, Night, Average
            10° Maps:
                Amplitude, Phase of Annual Cycle
            10° Data:
                Amplitude, Phase of Annual Cycle

         - DJF
            5° Maps: Day, Night, Average
            5° Data: Day, Night, Average
            10° Maps: Day, Night, Average
                Amplitude, Phase of Diurnal Cycle
            10° Data: Day, Night, Average
                Amplitude, Phase of Diurnal Cycle

         - MAM
            5° Maps: Day, Night, Average
            5° Data: Day, Night, Average
            10° Maps: Day, Night, Average
                Amplitude, Phase of Diurnal Cycle
            10° Data: Day, Night, Average
                Amplitude, Phase of Diurnal Cycle

         - JJA
            5° Maps: Day, Night, Average
            5° Data: Day, Night, Average
            10° Maps: Day, Night, Average
                Amplitude, Phase of Diurnal Cycle
            10° Data: Day, Night, Average
                Amplitude, Phase of Diurnal Cycle

         - SON
            5° Maps: Day, Night, Average
            5° Data: Day, Night, Average
            10° Maps: Day, Night, Average
                Amplitude, Phase of Diurnal Cycle
            10° Data: Day, Night, Average
                Amplitude, Phase of Diurnal Cycle

         - January
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - February
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - March
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - April
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - May
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - June
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - July
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - August
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - September
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - October
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - November
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

         - December
            10° Maps: Day, Night, Average
            10° Data: Day, Night, Average

Fog
Stratus
Stratocumulus
Cumulus
Cumulonimbus
Nimbostratus
Altostratus
Altocumulus
High Level Clouds
Middle level Clouds
Low Level Clouds


GRID BOX MAPS
Number of Cloud Observations
    DJF    5° Map, Data
              10° Map, Data
    MAM 5° Map, Data
              10° Map, Data
    JJA     5° Map, Data
              10° Map, Data
    SON  5° Map, Data
              10° Map, Data
Fraction of Area that is Ocean
       5° Map, Data
       10° Map, Data
Box Numbers
       5° Map,
       10° Map

Previous Atlases (PDF)

Ocean Distribution (1988)

Ocean Simultaneous Occurence (1990)