A Moisture-Stratiform Instability for Convectively Coupled Waves
By Z. Kuang. 2008
170 citations recorded by the source corpus.
Abstract A simple model of two vertical modes is constructed and analyzed to reveal the basic instability mechanisms of convectively coupled waves. The main novelty of this model is a convective parameterization based on the quasi-equilibrium concept and simplified for a model of two vertical modes. It hypothesizes 1) the approximate invariance of the difference between saturation moist static energy in the lower half of the troposphere and moist static energy in the subcloud layer, regardless of free troposphere humidity, and 2) that variations in the depth of convection are determined by moisture-deficit variations in the midtroposphere. Physical arguments for such a treatment are presented. For realistic model parameters chosen based on cloud system resolving model simulations (CSRMs) of an earlier study, the model produces unstable waves at wavelengths and with structures that compare well with the CSRM simulations and observations. A moisture–stratiform instability and a direct–stratiform instability...
Subfields: Atmospheric Science, Global and Planetary Change
View Paper: https://www.semanticscholar.org/paper/93ca8ce6aad082d464e9a522c9fcf2eb0016581b
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Citations in the corpus
- Fifty Years of Research on the Madden‐Julian Oscillation: Recent Progress, Challenges, and Perspectives (2020, background): “…with warm anomalies in the upper troposphere and cold anomalies in the lower troposphere, strong top‐heavy radiative heating may also destabilize the MJO by the stratiform instability mechanism (Del Genio & Chen, 2015; Khouider & Majda, 2006; Kuang, 2008; Mapes, 2000; K. H. Seo & Wang, 2010).”
- Atmosphere‐ocean coupled processes in the Madden‐Julian oscillation (2015, background): “…from a variety of algorithms), which are incorporated into several satellite-based bulk flux products [Chou et al., 1995; Schulz et al., 1997; Curry et al., 1999; Kubota et al., 2002; Bourras et al., 2002; Chou et al., 2003; Bentamy et al., 2003; Curry et al., 2004; Andersson et al., 2011].”
- Tropospheric water vapor, convection, and climate (2010, methodology): “The finding is supported by the MJO-like behavior of more idealized models when midlevel moistening by congestus is given an explicit role in modulating deep convection [Khouider and Majda, 2006; Raymond and Fuchs, 2009; Kuang, 2008].”
- CORRIGENDUM of the MJO Transition from Shallow to Deep Convection in Cloudsat-Calipso Data and GISS GCM Simulations (2012, methodology): “Simple dynamical models that utilize an assumed interaction between tropospheric moisture and precipitation or the diabatic heating profile have had success producing MJO-like behavior (e.g., Khouider and Majda 2006; Kuang 2008; Raymond et al. 2009).”
- The Global Atmospheric Circulation Response to Tropical Diabatic Heating Associated with the Madden–Julian Oscillation during Northern Winter (2012, methodology): “to sustain the MJO by creating eddy available potential energy and a moisture-stratiform instability feedback process (Mapes 2000; Kuang 2008; Fu and Wang 2009).”
- Surface Fluxes and Tropical Intraseasonal Variability: a Reassessment (2008, methodology): “It has been a goal of theoretical tropical meteorology for several decades to determine whether the interaction of convection and large-scale dynamics alone can generate large-scale variability [as in early CISK models, as well as in more recent models with more complex physics (e.g., Mapes 2000; Ma”