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• Atmosphere
  • Near surface
    • Temperature
      • The past
      • The future
    • Precipitation
      • The past
      • The future
    • Winds
      • The past
  • Troposphere (0-10 km)
    • Geopotential at 500hPa
      • The past
  • Stratosphere (10-50 km)
    • Ozone
    • Trace gas concentrations
  • Mesosphere/lower thermosphere (50-120 km)
    • Trace gas concentrations
  • Geospace (above 120 km)
    • Aurora
    • Magnetic field strength
• Ocean
  • Water masses (sub-surface)
  • Surface
    • Sea surface temperature
    • Winds
    • Topography
    • Mean sea level
  • Seabed
  • Biology
    • Planktonic
    • Benthic
    • Mammals
    • Fish
• Land
  • Topography
  • Exposed rock
    • Types of rock
  • Sub-surface geology
    • Drill cores
    • Magnetic fields
    • Geophysical profiling
      • Seismic
      • Gravity
  • Biology
    • Land surface biology
    • Lake biology
• Ice
  • Sea ice
    • Extent
    • Concentration
      • The past
      • The future
    • Thickness
    • Freeboard
  • Land ice
    • Sub-ice lakes and streams
    • Bed topography
    • Surface motion
  • Permafrost

Sea ice concentration, 1979-2007

Monthly means

February

September