AirWare On-line Reference Manual
| | Release Level | 5.4 |
| | Release Date | 2008 10 |
| Revision Level | 1.0 |
|
Last modified on:
Monday, 20-Jul-09 14:03 CEST
|
Roughness Length
Land use surface characteristics and associated roughness (length) as well
as UV albedo are important inputs for CAMx.
CAMx landuse categories and the default surface roughness values (m) assigned to
each category by season. Winter is defined for conditions where there is snow present;
winter months with no snow are assigned to the Fall category.
Roughness for water is taken as the maximum of the baseline value given in the table,
and the function Z0 = 0.000002 w**2.5 , where w is surface wind speed (m/s).
The listed UV albedo values can be used to assign UV albedo from
landuse data in preparing the albedo/haze/ozone (AHO) input file.
Surface Roughness (in meters) and UV Albedo by land cover and season
