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SCRAM Mixing Height Data

The mixing height data offered here present twice daily (derived) values and are obtained from the National Climatic Data Center (NCDC), Asheville, North Carolina. All data/station files for a state are in TXT format and have been compressed into a single ZIP file for that state. A description of the mixing height data format is provided. All mixing height meteorological data files have missing data filled as prescribed in " Procedures for Substituting Values for Missing NWS Meteorological Data for Use in Regulatory Air Quality Models", except where the guidelines could not be followed due to an excessive number of repetitive missing values. Please read the "Missing Meteorological Data Report" to identify the station/years that are not complete. A list of mixing height data stations are provided.

The data offered here are used in concert with the surface meteorological data for air quality modeling. The twice daily mixing height values are to be combined with hourly surface data using the PCRAMMET preprocessor program to obtain hourly interpolated mixing height values.

ALASKA
ARIZONA
ARKANSAS
CALIFORNIA
COLORADO
FLORIDA
GEORGIA HAWAII
IDAHO
ILLINOIS
KANSAS
KENTUCKY
LOUISIANA
MAINE
MASSACHUSETTS
MICHIGAN
MINNESOTA
MISSISSIPPI
MISSOURI
MONTANA
NEBRASKA
NEW JERSEY
NEW MEXICO
NEW YORK
NEVADA
NORTH CAROLINA
NORTH DAKOTA
OHIO
OKLAHOMA
OREGON
PENNSYLVANIA
PUERTO RICO
SOUTH CAROLINA
SOUTH DAKOTA
TENNESSEE
TEXAS
UTAH
VIRGINIA
WASHINGTON
WEST VIRGINIA
WISCONSIN
WYOMING

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