Table of Contents - The Atmospheric Studies Group at TRC

Section 8: CALMET Model Files
Table 8-4 (Continued)
Input Group 6 - Mixing Height, Temperature, and Precipitation Parameters
Variable Type Description Default Value
ZIMAXW real Maximum overwater mixing height (m) (Not used if
observed overwater mixing heights are used)
ZIMINW real Minimum overwater mixing height (m) (Not used if
observed overwater mixing heights are used)
IAVEZI integer Conduct spatial averaging of mixing heights (0=no,
1=yes)
MNMDAV integer Maximum search distance (in grid cells) in the spatial
averaging process. The square box of cells averaged is
2 x MNMDAV in length.
HAFANG real Half-angle of upwind-looking cone for spatial
averaging (deg.)
ILEVZI integer Layer of winds used in upwind averaging of mixing
heights. (Must be between 1 and NZ.)
IMIXH integer
Method to compute the convective mixing height
1: Maul-Carson for land and water cells
-1: Maul-Carson for land cells only - OCD mixing
height overwater
2: Batchvarova and Gryning for land and water cells
-2: Batchvarova and Gryning for land cells only OCD
mixing height overwater
THRESHL real Threshold buoyancy flux required to sustain
convective mixing height growth overland (expressed
as a heat flux per meter of boundary layer i.e. W/m3)
THRESHW real Threshold buoyancy flux required to sustain
convective mixing height growth overwater (expressed
as a heat flux per meter of boundary layer i.e. W/m3)
ITWPROG integer
Option for overwater lapse rates used in convective
mixing height growth
0 : use SEA.DAT (or default constant) lapse rates
1 : use prognostic lapse rates (only if IPROG>2)
3000.
50.
1
1
30.
1
1
0.05
0.05
1
(Input Group 6 Continued)
8-49