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Welcome to the Mesoscale Dynamics Group!

Thank you for visiting the website of the Mesoscale Dynamics Group, the research group led by Richard H. Johnson of the Department of Atmospheric Science at Colorado State University. Please note that Dr. Johnson is now Professor Emeritus and will no longer be taking on any new students.

Over the years, the research interests of the Mesoscale Dynamics Group have encompassed midlatitude, tropical, and monsoon convective systems and their coupling with the atmospheric circulation and the planetary boundary layer over a wide range of temporal and spatial scales. A major emphasis has been on observations of these phenomena collected from field campaigns, e.g., WMONEX (1978), OK PRE-STORM (1985), TOGA-COARE (1992-93), SCSMEX (1998), NAME (2004), TiMREX (2008), and CINDY/DYNAMO (2011-12).

The Mesoscale Dynamics Group continues to investigate the structure and dynamics of convective systems both in the tropics and midlatitudes. Among the topics being currently explored are mechanisms for extreme rainfall-producing storms, the properties of convective systems within African Easterly Waves, the role of the diurnal cycle in the MJO and ITCZ, topographic effects on tropical formation over the Indian Ocean, and the atmospheric mixed layer variability over the Indian Ocean during CINDY/DYNAMO.



Mesoscale area of lowered pressure behind a squall line Convection during TiMREX Convection during DYNAMO
Bow echo over Oklahoma Wind field in the Baja Peninsula area showing a southerly wind surge up the gulf Precipitating cloud during DYNAMO

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