On the structure of trade-wind air below cloud
Malkus, Joanne Starr
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The moisture and temperature structure of the trade-wind mixed layer are compared under conditions of strong versus weak trade. The data used are two series of aircraft psychrograph soundings made over the ocean near Puerto Rico in early spring. The first in conditions of strong undisturbed trade and high zonal index (April 10 - 28, 1946) and the second under conditions of weak rather disturbed trade and low zonal index (March 18 - April 7, 1953). The weak trade soundings show a less homogeneous moisture distribution and a less stable temperature lapse rate. Considerable variation in structure of the lowest air accompanies changes in the trade regime which may give rise to significant fluctuations in energy input at the source region for atmospheric circulations. The importance of wind stirring in the upward transfer of moisture is indicated, which may affect the formation of trade cumulus clouds. Further studies investigating the relation between air and ocean structure at their boundary are suggested by the evidence herein, which may relate to the formation of tropical storms.
Originally issued as Reference No. 56-52, series later renamed WHOI-.
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Malkus, Joanne Starr (Woods Hole Oceanographic Institution, 1953-05)Cross sections through two trade cumulus clouds are presented, showing the temperatures, turbulence, and water vapor content of the clouds and their nearby environment, the cloud slope, and the external wind profile. ...
Malkus, Joanne Starr (Woods Hole Oceanographic Institution, 1957-01)Comparison of the lower trade-wind air under conditions of strong versus weak circulation is continued, Moisture and thermal structure and transports from the top of the mixed layer up to the trade-wind inversion are ...
Malkus, Joanne Starr (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1958-08)The trade-wind moist layer is itself subdivided in the vertical into two superposed layers of different convective regime, because of the occurrence of water vapor condensation at about 600-700 m above the tropical oceans. ...