Bulletin of the American Meteorological Society, Volúmenes19-20

aerological air masses aloft altitude American Meteorological Society anticyclones atmosphere average balloon Blue Hill BULLETIN changes charts climate cloud cold front convection curve cycle cyclones effect fire flood forecasting formation freezing gradient heat height high pressure area hurricane hygrometer increase indicated inversion isentropic isentropic surface isobars June Lake lapse rate layer maximum mean measurements meeting ments meteorograph meters method miles moisture observations Observatory occur ozone paper perature period polar precipitation present pressure radiation radio radio-meteorograph radiosonde rain rainfall records region relative humidity reports shown snow solar southern specific humidity stations storm sunspot surface synoptic tempera temperature thunderstorms tion tropical tropical cyclones tropopause ture typhoon U. S. Weather Bureau upper air variations varves velocity vertical warm warm front Washington waves weather map wind winter