Investigating the Mechanisms of Shallow Precipitating Clouds Formation during the HI-SCALE Field Campaign
Abstract
Shallow precipitating clouds are often a precursor to subsequent deep convection. This study investigates the land-atmosphere interactions, boundary layer processes and the response of cloud microphysical processes that lead to the formation of such clouds over the Southern Great Plain during Holistic Interactions of Shallow Clouds, Aerosols and Land-Ecosystems (HI-SCALE) field campaign in 2016. High resolution simulations of a selected case of transition from clear-sky to shallow precipitating clouds and then to the deep convection transition are conducted using a Large Eddy Simulations (LES) version of the Weather Research and Forecasting Model and are compared with observations. The impacts of land use (i.e. cropland, forest, etc.) on the initialization of non-precipitating clouds and the roles of cold pools associated with evaporation of raindrops in the transition is examined.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.A11J2369C
- Keywords:
-
- 3310 Clouds and cloud feedbacks;
- ATMOSPHERIC PROCESSESDE: 3314 Convective processes;
- ATMOSPHERIC PROCESSES