Appendix C. EasyFlux
®
DL CR6KH20
C-15
TABLE C-14. Station Variables with Descriptions
Station Variable
Units
Default
Description
Name of variable in
Public Table (in
case no CR1000KD
available)
Latitude
decimal
degrees
41.766
The site latitude in degrees North
or South.
Latitude
Hemisph_NS
none
NORTH
The site latitudinal hemisphere.
Options are NORTH or SOUTH.
hemisphere_NS
1 = North
–1 = South
Longitude
decimal
degrees
111.855
The site longitude in degrees
East or West.
Longitude
Hemisph_EW
none
WEST
The site longitudinal
hemisphere. Options are EAST
or WEST.
hemisphere_EW
1 = East
–1 = West
Altitude
m
1356
The site altitude
altitude
Meas Height
m
2
The height of the center of the
eddy-covariance sensor
measurement volumes above
ground.
height_measurement
Surf Type
none
GRASS
Type of surface at the
measurement site. Options are
CROP, GRASS, FOREST,
SHRUB, BARELAND, and
WATER. This is used to
estimate displacement height.
surface_type
1 = CROP
2 = GRASS
3 = FOREST
4 = SHRUBLAND
5 = BARELAND
6 = WATER
7 = ICE
Canopy Height
m
0.5
The average height of the
canopy.
height_canopy
d
m
0 (Auto)
Displacement height. Set to zero
(0) for program to auto-calculate.
See the Aerodynamic Height
appendix in the
EasyFlux DL
CR6OP
manual for details.
displacement_user
z
0
m
0 (Auto)
Roughness length. Set to zero (0)
for program to auto-calculate.
See the Programmatic Approach
appendix in the
EasyFlux DL
CR6OP
manual for details.
roughness_user
Sonic Azmth
decimal
degrees
0
The compass direction in which
the sonic negative x-axis points
(the compass direction in which
the sonic head is pointing).
sonic_azimuth
KH20 Coord x
m
0.15
Distance along the sonic x-axis
between the sonic sampling
volume and KH20 sampling
volume.
separation_x_kh20