Summary: On the diurnal cycle of deep convection, high-level cloud, and upper
troposphere water vapor in the Multiscale Modeling Framework
Stephen A. Klein,1
Roger T. Marchand,5
John M. Haynes,6
Renata B. McCoy,1
and Thomas P. Ackerman5
Received 1 February 2008; revised 15 April 2008; accepted 9 June 2008; published 22 August 2008.
 The Multiscale Modeling Framework (MMF), also called ``superparameterization'',
embeds a cloud-resolving model (CRM) at each grid column of a general circulation model
to replace traditional parameterizations of moist convection and large-scale condensation.
This study evaluates the diurnal cycle of deep convection, high-level clouds, and upper
troposphere water vapor by applying an infrared (IR) brightness temperature (Tb) and a
precipitation radar (PR) simulator to the CRM column data. Simulator results are then
compared with IR radiances from geostationary satellites and PR reflectivities from the
Tropical Rainfall Measuring Mission (TRMM). While the actual surface precipitation rate in