AirWare Reference Manual: meteorological scenario generation

AirWare On-line Reference Manual

Release Level	5.3.0 beta
Release Date	2007 06
Revision Level	1.1

Meteorological Scenario Generation

Meteorological scenarios for a given model scenario and domain are composed by a meteo pre-processor which is either based on

the non-hydrostatic 3D dynamic model MM5 (optional), or
a pair of meteorological monitoring stations defined for the model scenario including a virtual upper air station; to keep the inteface consistent, the data for the meteorological stations can also be extracted from the MM5 model results.

The meteorological scenarios are then generated by

A post-processor for MM5 directly generating CAMx input matrices;
a combination of the diagnostic wind field model DWM and a set of internal pre-processor routines for CAMx to generate sets of layered, dynamic matrices. Please note that for DWM more than one meteorological station with wind data can be specified as input.
A pre-processor for AERMET that extracts .....
A pre-processor for PBM, that extracts ....

This pre-processors use one representative monitoring station in or near the domain (as defined interactively by the user in the model scenario) to select, interpolate, derive, estimate, or generated the appropriate meteorolgical variable or field/matrix data required, or they use input from MM5 (directly for CAMx, or by extracting simulated station data from MM5 results).

CAMx input from station data

Please note that for the calculation of the wind field (matrix) data by the DWM diagnostic wind model, the corresponding point data for geostrophic (upper atmosphere) and anemometric wind data (at least one station) are required. If no meteo scenario can be generated due to missing meteorological historical, real-time or forecasting data (depending on the temporal coverage of the scenario), the model run is aborted.

Similarly, the layered matrixes for parameters such as temperature, water content, air pressure etc. are derived from the initial scalar point mesurements of a user defined representative station corrected by distributed surface properties where applicable, and vertically distributed to the model grid layers. Alternatively (and preferrably) all 3D dynamic meteorological data for CAMx are calculated with an external meteorological model such as MM5.