Fogs, Clouds, and Aviation

A. J. Weed Advection Fog Aitken Altocumulus atmosphere average aviator Banner cloud billow cloud Calif caused cirro Cirrocumulus cirrostratus cirrus clouds cloud Figs CLOUD FORMS cold air colder colors condensation nuclei convection cooling Corona CREPUSCULAR RAYS crest cloud Cumulonimbus dew point drifting dust E. E. Barnard Ellerman evaporation expansion fall false cirrus fog and cloud fog particle Fractocumulus frequently frost smoke funnel cloud halos heating Hence humid air hygroscopic ice crystals layer Lenticular cloud light LUKE HOWARD Mammatocumulus maximum cloudiness miles moisture Mount Wilson mountain nearly nimbostratus Nimbus occasionally occurs parhelic circle produced Radiation fog rain cloud rain or snow regions relatively warm riffle cloud rising air saturated Scarf cloud Seen at Mount Seen from Mount sheet side snow crystals stationary Stratocumulus stratus sun or moon temperature thin tion Tornado or funnel type of cloud Valley W. J. Humphreys water droplets water vapor weather