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- Author or Editor: Tom Beer x
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Abstract
The outer cloudband structure of a tropical cyclone is kinematically treated as the manifestation of a forced set of waves stationary with respect to the cyclone. When the cyclone wind field is modeled as a Rankine vortex and the cloudbands are treated as constant phase surfaces they are found to have qualitative similarities to those observed in actual cyclones.
Abstract
The outer cloudband structure of a tropical cyclone is kinematically treated as the manifestation of a forced set of waves stationary with respect to the cyclone. When the cyclone wind field is modeled as a Rankine vortex and the cloudbands are treated as constant phase surfaces they are found to have qualitative similarities to those observed in actual cyclones.
Meteorological services are expected to function as forecasting agencies, but much of the existing data collection network appears to exist in order to provide a data base for scientific studies. A better definition of the goals of a meteorological service should result in greater management and administrative efficiency, and we offer suggestions as to the means of achieving this within a systems analytic framework.
Meteorological services are expected to function as forecasting agencies, but much of the existing data collection network appears to exist in order to provide a data base for scientific studies. A better definition of the goals of a meteorological service should result in greater management and administrative efficiency, and we offer suggestions as to the means of achieving this within a systems analytic framework.
Abstract
We use radiosonde data from Tamale in northern Ghana to evaluate the Z criterion latitude ϕ z . We find it correlates well with other Hadley cell parameters since its variations are apparently controlled by the meridional movement of the subtropical westerly jet. Since the Hadley cell parameters correlate well with Tamale rainfall, we conjecture that it should be possible to predict northern Ghana rainfall on the basis of the southward extension of the subtropical jet once more data have been collected by the Tamale radiosonde. This conjecture is supported by data from other stations in West Africa.
Abstract
We use radiosonde data from Tamale in northern Ghana to evaluate the Z criterion latitude ϕ z . We find it correlates well with other Hadley cell parameters since its variations are apparently controlled by the meridional movement of the subtropical westerly jet. Since the Hadley cell parameters correlate well with Tamale rainfall, we conjecture that it should be possible to predict northern Ghana rainfall on the basis of the southward extension of the subtropical jet once more data have been collected by the Tamale radiosonde. This conjecture is supported by data from other stations in West Africa.
