Before revision: + Typical Scales of Atmospheric Motion Systems Type of motion Horizontal scale (meter) Molecular mean free path 10−7 Minute turbulent eddies 10−2 – 10−1 Small eddies 10−1 – 1 Dust devils 1–10 Gusts 10 – 102 Tornadoes 102 Thunderclouds 103 Fronts, squall lines 104 – 105 Hurricanes 105 Synoptic Cyclones 106 Planetary waves 107 Atmospheric tides 107 Mean zonal wind 107 Microscale Microscale meteorology is the study of atmospheric phenomena on a scale of about or less.
After revision: + Typical Scales of Atmospheric Motion Systems Type of motion Horizontal scale (meter) Molecular mean free path 10−7 Minute turbulent eddies 10−2 – 10−1 Small eddies 10−1 – 1 Dust devils 1–10 Gusts 10 – 102 Tornadoes 102 Cumulonimbus clouds 103 Fronts, squall lines 104 – 105 Hurricanes 105 Synoptic Cyclones 106 Planetary waves 107 Microscale Microscale meteorology is the study of atmospheric phenomena on a scale of about or less.