Introduction

Publications

Digital Databases

LAND MAPS
Total Cloud Cover
Completely Clear Sky
Precipitation
Fog
Stratus
Stratocumulus
Cumulus
Cumulonimbus
   * Average Cloud Amount
   * Frequency of Occurrence
   * Amount When Present
   * Average Base Height
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)