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

Introduction

Publications

Digital Databases

LAND MAPS
Total Cloud Cover
Completely Clear Sky
Precipitation
Fog
Stratus
Stratocumulus
Cumulus
   * Average Cloud Amount
         - Annual Maps: Day, Night, Average
           Amplitude, Phase of Annual Cycle   
                      Data: Day, Night, Average
           Amplitude, Phase of Annual Cycle

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   * Frequency of Occurrence
   * Amount When Present
   * Average Base Height
Cumulonimbus
Nimbostratus
Altostratus
Altocumulus
High Level Clouds
Middle level Clouds
Low Level Clouds

Grid Box Maps
Number of Weather Stations Used
   Map, Data
Fraction of Area that is Land
   Map, Data

Previous Atlases (PDF)

Land Distribution (1986)

Land Simultaneous Occurence (1990)