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Atmosphere 2011, 2(2), 57-66; doi:10.3390/atmos2020057
Article

Diurnal Cycle of the North American Monsoon in a Mesoscale Model Simulation: Evolution of Key Parameters in Relation to Precipitation

1,*  and 2
Received: 12 February 2011 / Revised: 7 March 2011 / Accepted: 25 March 2011 / Published: 6 April 2011
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Abstract

The diurnal cycle of the North American monsoon is analyzed based on the output from a mesoscale model simulation. Statistically significant diurnal cycle in precipitation is identified, with heavy precipitation—essentially convective—dominating in local afternoons. Temporal evolution of key parameters in relation to precipitation is investigated, based on which a sequence of the dynamic/thermodynamic processes underlying precipitation development is proposed. Particularly, the afternoon peak in precipitation is found preceded by enhanced static instability and low-level convergence.
Keywords: diurnal cycle; North American monsoon; mesoscale model; precipitation diurnal cycle; North American monsoon; mesoscale model; precipitation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Guan, B.; Zheng, W. Diurnal Cycle of the North American Monsoon in a Mesoscale Model Simulation: Evolution of Key Parameters in Relation to Precipitation. Atmosphere 2011, 2, 57-66.

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