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gfdl's home page > gfdl's bibliography > 1984: International Symposium on Nowcasting II: Mesoscale Observations and Very-Short-Range Forecasting, 271-280
Predictability of mesoscale phenomena
| Orlanski, I., and L. Polinsky, 1984: Predictability of mesoscale phenomena. In International Symposium on Nowcasting II: Mesoscale Observations and Very-Short-Range Forecasting, Noordwijk, Netherlands: ESA Scientific & Technical Publications Branch, 271-280. |
| Abstract: A number of simulations with a high-resolution three-dimensional primitive equation model were conducted to assess the impact of initial and boundary data inaccuracies for the simulation of mesoconvective systems and their environments. Attention has been given to the simulations of Pacific comma clouds, frontal squall lines, mesoconvective complexes, and coastal cyclogenesis; all these cases are from FGGE year 1979. The sensitivity of these simulations to surface boundary layer variables and the cloud fraction (latent heat parameterization) has been investigated. Considerable success has been achieved in those simulations. It has been found that, in most mesoconvective systems, the environmental convergence of a preexisting front is responsible for the growth of the storm's vorticity, whereas moisture is essential for its explosive evolution. |