Abstract
The research network “Basic Concepts for Convection Parameterization in Weather Forecast and Climate Models” was organized with European funding (COST Action ES0905) for the period of 2010–2014. Its extensive brainstorming suggests how the subgrid-scale parameterization problem in atmospheric modeling, especially for convection, can be examined and developed from the point of view of a robust theoretical basis. Our main cautions are current emphasis on massive observational data analyses and process studies. The closure and the entrainment–detrainment problems are identified as the two highest priorities for convection parameterization under the mass–flux formulation. The need for a drastic change of the current European research culture as concerns policies and funding in order not to further deplete the visions of the European researchers focusing on those basic issues is emphasized.
Highlights
The research network COST Action ES0905 “Basic Concepts for Convection Parameterization in Weather Forecast and Climate Models” was organized with European funding over the period 2010–2014.The present paper constitutes a final scientific report of the network activity
An interesting feature suggested by Marquet and Geleyn [118] is that the large impact of water vapor does not modify so much the formulation of the Brunt-Väisälä frequency when going from the fully dry-air to the “moist-air” formulations. These results indicate that parameterization schemes relying on phenomenological representations of the links between condensation/evaporation and microphysics might not be the only answer to the challenges discussed here
From a point of view of the convective energy cycle already discussed in Q1.2.1, deep convection is induced from shallow convection by the tendency of the latter continuously destabilizing its environment by evaporative cooling of non–precipitating water as it detrains
Summary
The research network COST Action ES0905 “Basic Concepts for Convection Parameterization in Weather Forecast and Climate Models” was organized with European funding over the period 2010–2014. Though the present report does not intend to replace an official final report submitted to the COST office, it expresses collective positions of the contributing authors while reflecting well the overall Action achievements. The contributing authors bear these criticisms as our common fault of failing to do better than otherwise The intention of these critical remarks are so that our convection parameterization research becomes more sound in future to come. The authors do not claim that all the arguments developed in the present report are right, but are only the best ones that they can offer for These arguments must be used as a starting point for more critical and constructive debates on the future direction of the convection parameterization research. The general perspectives in the last section of the report are developed from this point of view
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