The role of convection in surface property and velocity fluctuations |
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| Authors: | S. L. Ulanski R. K. Hadlock M. Garstang |
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| Affiliation: | (1) Dept. of Environmental Sciences, University of Virginia, Charlottesville, Va., USA;(2) Depts. of Oceanography and Meteorology, Florida State University, Tallahassee, Fla., USA;(3) Present address: Battelle Pacific Northwest Laboratories, Richland, Washington;(4) Dept. of Environmental Sciences, University of Virginia, Charlottesville, Va., USA |
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| Abstract: | Time series of temperature, humidity and horizontal wind speed are presented from data collected at two tower sites during the 1968 Barbados Experiment. Marked and periodic fluctuations on the convective scale are evident in the traces. It is postulated that these fluctuations are due to moderate cumulus convection. Estimates show that departures in temperature and humidity at the surface must be due to downward mixing from near or above the convective cloud base. Such cloud layer-subcloud layer mixing must change the thermodynamic character of the subcloud layer. This in turn suggests that cloud convection may play an important part in governing the transport of energy across the air-sea interface. |
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