Cloud-Resolving Modeling of Convective Processes by Shouting Gao

By Shouting Gao

This publication examines cloud-resolving modeling of tropical convective procedures and summarizes modeling effects in the course of TOGA COARE seeing that 1992. The ebook introduces the framework of cloud-resolving version, methodologies for research of modeling outputs, and validation of simulations with observations. The publication information vital medical findings within the facets of floor rainfall tactics, precipitation potency, dynamic and thermodynamic approaches linked to tropical convection, diurnal adaptations, radiative and cloud microphysical strategies linked to improvement of cloud clusters, air-sea coupling on convective scales, weather equilibrium states, and distant sensing purposes. The booklet might be helpful to graduate scholars and researchers in cloud, mesoscale, and worldwide modeling.

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1997). Strong upward motion centers occur on 20, 23, and 25 December, signaling quasi-2-day oscillation (Takayabu et al. 1996) embedded in the active phase of intraseasonal oscillation during COARE. Two moderate ascending motion centers appear on 19 and 21 December, forming diurnal variations with nocturnal rainfall peaks (Sui et al. 1997). Large-scale advective cooling and moistening are largely associated with these ascending motion centers. Two model setups are used. The model in experiment COARE1 uses vertical velocity, zonal wind, horizontal thermal and vapor advection, and SST as the forcing data.

2). The variation of [PCND1 ] is determined by specific humidity, whereas the variation of [PCND2 ] is determined by saturated specific humidity that is a function of temperature. [PCND1 ] and [PCND2 ] are negatively correlated with similar magnitudes of about 3 × 103 mm h−1 (not shown), whereas [PCND ] has the magnitudes of about 2 mm h−1 (see Fig. 12). Thus, vapor condensation rate is the small residual between the two large terms related to specific humidity and temperature-dependent saturated specific humidity.

The air parcel is lifted dry adiabatically until it becomes saturated and then is lifted moist adiabatically thereafter. The level of free convection (LFC) is the height where θ pcl > θenv , zc is the level where θ pcl = θenv . The CAPE can be calculated for a pseudo-adiabatic process and a reversible moist adiabatic process, respectively. In the pseudo-adiabatic process, an air parcel is lifted adiabatically while all condensed water drops out from the parcel. In the reversible moist adiabatic process, an air parcel is lifted adiabatically while all condensed water is kept in the parcel.

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