Admiralty Weather Manual, 1938 |
Common terms and phrases
absolute humidity adiabatic air mass aircraft altimeter altocumulus altostratus amount aneroid anticyclone atmosphere balloon barograph barometer Beaufort Beaufort scale bulb centre changes chart cirrus cloud coast cold front condensation convection correction cumulonimbus cumulus depression dew-point distribution diurnal diurnal variation dry-bulb temperature earth's surface evaporation fall feet force forecast geostrophic wind heat height horizontal ice accretion increases indicated instrument inversion isallobaric isobars isothermal knots land lapse-rate latitude layer lower M.S.L. pressure mean temperature mercury millibars minute normal North northern hemisphere observations occlusion occur ocean owing position precipitation pressure gradient psychrometer radiation rain rate of ascent reading record regions relative humidity reported rise saturated scale stations storm stratocumulus surface wind synoptic temperate tephigram thermometer thunderstorms tropical tropical cyclones tube upper wind usually vertical visibility warm air warm front water vapour wave-length weather wet-bulb wind speed