Incremental Analysis Updates Initialization Technique Applied to 10-km MM5 and MM5 3DVAR

The same-source parallel MM5

With the March 1998 release of the Penn State University/NCAR Mesoscale Model (MM5), the official version of the model (MM5v2 Release 8) now runs on distributed memory (DM) message-passing platforms. Under an IBM-funded effort, source translation and runtime library support minimize the impact of parallelization on the original model source code with the result that the majority of code is line...

The Mm5 Adjoint Modeling System

. .. ..... . . . ix Chapter 1 Chapter 2 Introduction . .. . . . . . ... A general description of adjoint techniques . * . . . 1

Sensitivity Analysis of the Mm5 Weather Model Using Automatic Diierentiation

We present a general method for using automatic diierentiation to facilitate model sensitivity analysis. Automatic diierentiation techniques augment, in a completely mechanical fashion, an existing code such that it also simultaneously and eeciently computes derivatives. Our method allows the sensitivities of the code's outputs to its parameters and inputs to be determined with minimal human ee...

A a Quantification of the Effects of Data Denial and Limitation in Mm5 Initialization on Forecast Accuracy Thesis

Using the 3-Dimensional Variational Analysis data assimilation scheme and the Pennsylvania State University (PSU)/National Center for Atmospheric Research (NCAR) Mesoscale Model 5 (MM5) as configured and run operationally by the Air Force Weather Agency (AFWA) in the European theater, input observations were denied in three different categories: total, upper air, and surface observation denial....

Mm5 Wintertime Simulations of the Antarctic Boundary-layer Wind Forcing