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International Cloud Atlas
  • Introduction
    • Foreword to the 2017 edition
    • Meteorological definition of a meteor
    • General classification of meteors
      • Hydrometeors
      • Lithometeors
      • Photometeors
      • Electrometeors
  • Clouds
    • Introduction and principles of cloud classification
      • Definition of a cloud
      • Appearance of clouds
      • Principles of cloud classification
      • Cloud classification summary
      • Cloud abbreviations and symbols
    • Definitions of clouds
      • Useful concepts
      • Definitions of clouds
    • Descriptions of clouds
      • Cirrus (Ci)
      • Cirrocumulus (Cc)
      • Cirrostratus (Cs)
      • Altocumulus (Ac)
      • Altostratus (As)
      • Nimbostratus (Ns)
      • Stratocumulus (Sc)
      • Stratus (St)
      • Cumulus (Cu)
      • Cumulonimbus (Cb)
    • Orographic influences on clouds
      • Introduction
      • Orographic influence on the windward side
      • Orographic influence on the leeward side
    • Upper atmospheric clouds
      • Nacreous clouds
      • Nitric acid and water polar stratospheric clouds
      • Noctilucent clouds (polar mesospheric clouds)
  • Other Meteors
    • Classification and symbols of meteors other than clouds
      • Hydrometeors
      • Lithometeors
      • Photometeors
      • Electrometeors
      • Character and intensity of precipitation
      • Additional symbols
    • Definitions and descriptions of meteors other than clouds
      • Hydrometeors other than clouds
      • Lithometeors
      • Photometeors
      • Electrometeors
    • Observation of meteors other than clouds from the Earth's surface
      • Introduction
      • Observation of hydrometeors other than clouds
      • Observation of lithometeors
      • Observation of photometeors
      • Observation of electrometeors
  • Observing Clouds
    • Observation of clouds from the earth's surface
      • Introduction
      • Identifying clouds
      • Total cloud cover and cloud amount
      • Height and altitude
      • Direction and speed of movement
      • Optical thickness
      • Observation of clouds from mountain stations
      • Observation of upper atmospheric clouds
    • Coding of clouds in the codes CL, CM and CH and corresponding symbols
      • Introduction of the coding of clouds
      • Code specifications and coding procedures
      • Coding instructions of clouds in the codes CL, CM and CH
      • Cloud classification aids CL, CM and CH
      • Cloud symbols corresponding to the CL, CM and CH codes
    • Observation of clouds from aircraft
      • Issues for observation of clouds from aircraft
      • Descriptions of clouds as observed from aircraft
      • Fog and haze as seen from aircraft
  • Images
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    • Compare two images
  • Glossary
  • Other Information
    • Editorial note
    • Appendix 1 - Etymology of latin names of clouds
    • Appendix 2 - Historical bibliography of cloud classification
    • Appendix 3 - History of cloud nomenclature
    • Appendix 4 - Lists of tables, figures and acronyms
    • History of the ICA
      • Foreword to the 1987 edition of volume II
      • Preface to the 1975 edition of volume I
      • Preface to the 1956 edition
      • Preface to the 1939 edition
    • Previous Editions
      • ICA Vol. 2 (1987 edition)
      • ICA Vol. 1 (1975 edition)
      • ICA Vol. 1 (1956 edition)
      • ICA (1930 edition)
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