SFC is a surface meteorological data file contains surface-level variables and turbulence scaling parameters calculated by AERMET for the AERMOD dispersion model. There is header followed by one record for each hour. The contents of the SFC file are -

1. Year
2. Month, [1-12]
3. Day, [1-31]
4. Julian, Day, [1-366]
5. Hour, [1-24]
6. Sensible Heat Flux, [Watt/meter^2]
7. Surface Friction Velocity, [meters/second]
8. Convective Velocity Scale, [meters/second]
9. Vertical Potential Temperature, Gradient, above, PBL, [kelvin/meter]
10. Convective Mixing Height, [meters]
11. Mechanical Mixing Height, [meters]
12. Monin-Obukhov Length, [meters]
13. Surface Roughness Length, [meters]
14. Bowen Ratio
15. Albedo
16. Wind Speed, [meters/second]
17. Wind Direction, [degrees]
18. Height of Anemometer, [meters]
19. Temperature, [kelvin]
20. Height at which Temperature was Measured [meters]
21. Precipitation Type, Code
22. Precipitation Amount, [millmeters/hour]
23. Relative Humidity, [%]
24. Surface Pressure, [millibar]
25. Cloud Cover, [tenths]
26. Data Flag