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Appendix C. EasyFlux
®
DL CR6KH20
C-33
TABLE C-22. Data Fields in the Flux_Notes Output Table
Data Field Name
Units
Description
Data Field
Included
displacement_user
m
User entered displacement height; 0 for
auto calculation
Always
d
m
Displacement height used in
calculations; it will equal
displacement_user if user entered a
non-zero value; if displacement_user is
zero, program will auto calculate
Always
roughness_user
m
Roughness length entered by user (if
left as 0, the program autocalculates a
value)
Always
z0
m
Roughness length; if roughness_user =
0, z0 is determined by the program; if
roughness_user
≠
0, z0 is set to
roughness_user.
Always
z
m
Aerodynamic height
Always
MO_LENGTH
m
Monin-Obukhov length
Always
ZL
m·m
-1
Atmospheric surface layer stability
Always
iteration_FreqFactor
count
Number of iterations for recalculating
Monin-Obukhov length and frequency
factors
Always
latitude
decimal
degrees
Latitude; positive for Nothern
hemisphere, negative for Southern
hemisphere
Always
longitude
decimal
degrees
Longitude; positive for Eastern
hemisphere, negative for Western
hemisphere
Always
a
lt
itude
m
Altitude of site above sea level
Always
UTC_OFFSET
h
Time offset in hours at site relative to
universal time
Always
separation_x_kh20
m
Separation between sonic and KH20
with respect to sonic x-axis
Always
separation_y_kh20
m
Separation between sonic and KH20
with respect to sonic y-axis
Always
separation_lat_dist_kh20
m
Separation distance between sonic and
KH20 along the axis perpendicular to
oncoming wind
Always
separation_lag_dist_kh20
m
Separation distance between sonic and
KH20 along the axis parallel to
oncoming wind
Always
separation_lag_scan_kh20
scans
Number of scans to lag KH20 data
relative to sonic data to account for
separation along the axis of oncoming
wind and wind velocity
Always