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Meteorological Processors and Accessory Programs
Surface and upper air data, provided by NWS, are important inputs for air quality models.
Before these data are used in some of the EPA dispersion models,
meteorological processors are used to manipulate
the data. Some of these processors re-format data for input into air quality dispersion models, while
other processors use the NWS observational data to calculate important inputs for the dispersion models. These
processors include: AERMET,
Mixing Height Program,
MPRM,
PCRAMMET, and
STAR.
Other
accessory programs are also provided that produce graphical or statistical outputs
that can aid in the interpretation and understanding of the NWS data or dispersion model results.
These accessory programs include: BINTOASC,
METLIST,
WINDROSE,
WRPLOT.
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| Meteorological Processors |
AERMET - Version 06341
AERMET is a meteorological data preprocessor for
AERMOD. AERMET processes commercially available or custom on-site met data
and creates two files: a surface data file and a profile data file. The tool
AERSURFACE
can be used to estimate the surface characteristics for input
to AERMET.
Model Code
Executable (456k,zip)
Source Code (316k,zip)
Test Cases (2758k,zip)
Model Documentation
README
Model Change Bulletin #1
User's Guide and Addendum
FIXISHD Utility Program
README
FIXISHD Program (1695k,zip) Executable, Source Code, Test case, README
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Mixing Height
Program
A program which calculates twice daily mixing heights
for use in PCRAMMET. This program requires surface and
radiosonde files as inputs.
Model Code
Executable (130KB,ZIP - Readme included)
Source
Code (19KB,ZIP)
Model Documentation
Test
Case (827KB,ZIP)
User's
Guide (11KB,ZIP)
Latest Model Change
Bulletin (txt file) |
MPRM (Meteorological Processor for Regulatory
Models)
A program used to process meteorological data,
both National Weather Service and on-site, for use in regulatory
modeling. MPRM has 3 stages: (1) listing missing, suspect ,
and invalid data, (2) merging quality assured and corrected
meteorological data, and (3) creating meteorological data files for
input to air quality dispersion models. It contains the
PCRAMMET program.
Model Code
MPRM Executable (244KB,ZIP) (Revised 6/24/99)
Executable for data extraction and quality assurance (265KB,ZIP)
Source Code (200KB,ZIP) (Revised 6/24/99)
Model Documentation
README (5KB,TXT) (Revised 6/24/99)
Test Case (197KB,ZIP) (Revised 6/24/99)
User's
Guide (272KB,ZIP)
Addendum to User's Guide
Latest Model
Change Bulletin (text file)
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PCRAMMET
A meteorological processor which combines hourly NWS surface and twice daily mixing heights into a single file,
computes a mixing height for each hour. PCRAMMET also incorporates surface characteristic parameters
(Monin-Obukhov length, surface roughtness length, albedo, Bowen ratio, anthropogenic heat flux, and net radiation)
for deposition modeling. Output from PCRAMMET is commonly used as input to
ISCST3 and
BLP.
PCRAMMET is a PC version of the original RAMMET program.
Model Code
Executable (160KB,ZIP - with readme)
Source
Code (52KB.ZIP)
Model Documentation
User's
Guide
Latest Model Change
Bulletin (text file)
Test Cases Using Different Input Data Formats:
PCREX1
- CD144/TD3240 fixed format example (323KB,ZIP)
PCREX2
- SAMSON example (291KB,ZIP)
PCREX3
- SCRAM example (174KB,ZIP)
PCREX4 -
CD144/TD3240 variable format example (322KB,ZIP)
PCREX5
- HUSWO data (320KB,ZIP)
Tutorial
PCRAMMET
Demonstration (362K,ZIP)
PCRAMMET
Program (166K,ZIP)
Tutorial
Documentation (27K,ZIP)
Instructions
on PCRAMMET tutorial (text file)
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STAR (STability ARray program)
This program calculates a frequency distribution for wind speed, wind
direction and wind stability. The output is an array suitable
for input to
ISCLT3.
Model Code and Documentation
Executable,
Source Code and Test Case (216KB,ZIP - Readme
included)
Latest Model Change
Bulletin (text file) |
| Accessory Programs |
BINTOASC
A program that converts meteorological data from binary format to ASCII format.
It is used primarily to give convert meteorological data when using the deposition option in the
ISCST3 model (and is located with the model).
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METLIST
This program creates a listing file of specified meteorological data for a specified day or range
of days, for QC or other purposes of inspection of a meteorological dataset. This program is used with the
ISC3 model (and is located with the model).
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WINDROSE
A program that produces wind frequency statistics for 16 directions (22.5
degree arcs) to generate a graphical wind rose for each wind sector. The
program uses the
TD-1440
meteorological data (raw SCRAM format) as input.
Model Code and Documentation
Executable
and Test files (285KB,ZIP)
Latest Model Change
Bulletin (text file)
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WRPLOT (Wind Rose PLOT)
A program which computes wind rose statistics based on 10 degree wind increments.
Unlike WINDROSE, WRPLOT can provide a graphical plot. Windrose uses the
TD-1440 SCRAM
meteorological data as input.
Model Code
Executable
and test data (1087KB,ZIP)
Model Documentation
Tutorial
- Documentation, test data and readme.
WRPLOT
Demonstration (1084K,ZIP)
Tutorial
Documentation (48K,ZIP)
Instructions for WRPLOT Tutorial (2K,TXT)
Latest Model Change
Bulletin (text file)
Test Data Sets
1984
Meteorological Data for RDU, NC (71K,ZIP)
1998
Meteorological Data for RDU, NC (70K,ZIP)
1986
Meteorological Data for RDU, NC (71K,ZIP)
1987
Meteorological Data for RDU, NC (70K,ZIP)
1988
Meteorological Data for RDU, NC (71K,ZIP)
1989
Meteorological Data for RDU, NC (71K,ZIP)
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