Lufft CHM 15k Nimbus, Manual

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Communication RS485 & Ethernet
Revision R09, November 2016 51
short temp_det (time)
long_name = “detector temperature
in K*10”
units = “K”
scale_factor = 10
Detector temperature
[Kelvin x 10]
short temp_lom (time)
long_name = “laser optic module temper-
ature in K*10“
units = “K”
scale_factor = 10
Laser optic module temperature
[Kelvin x 10].
int life_time (time)
long_name = “laser life time”
units = “h”
Laser operating time in hours.
short state_laser (time)
long_name = “laser quality index”
units = “percent”
Laser quality index in percent.
short state_detector (time)
long_name = “quality of detector signal”
units = “percent”
Detector quality signal in percent.
float base (time)
long_name = “baseline raw signal in pho-
tons per shot (b)“
units = “counts / shot”
Baseline height of the raw signal mainly
influenced by daylight. Transmitted in pho-
tons per shot.
float stddev (time)
long_name = “standard deviation raw sig-
nal in photons per shot “
units = “counts / shot”
Standard Deviation of the raw signal, in
photons/ shot
short p_calc (time)
long_name = “calibration pulse in pho-
tons per shot”
units = “counts / shot”
scale_factor=“100000“
Calibration pulse used to normalize individ-
ual units over time.
float scaling
units = “unitless“
long_name = “scaling factor (c)” Scaling factor used to normalize individual
units against reference system. (called
TBcalibration in RS485).
short nn1 ... nn3 used by manufacturer
short PBL (time, layer)
long_name = “aerosol layer in PBL“
units = “m”
axis=“range“
Aerosol layer calculated within the plane-
tary boundary layer.
schar PBS (time, layer)
long_name = “quality score for aerosol
layer in PBL“
units=“unitless“
Quality score for aerosol layers.
schar SCI (time)
long_name = “sky condition index“
sky condition index
schar BCC (time)
long_name = “base cloud cover“
unit=“eighths“
base cloud cover
Variable Description
Table 14: Variables in NetCDF