Lufft CHM 15k, Руководство пользователя

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Operating Manual CHM 15k R13 / 07-2019
Communication via RS485 & Ethernet 41
8.4.4 Format structure
In the NetCDF format, the values to be stored are defined by dimensions, variables and attributes.
Table 13
to Table 15 describe the designations used.
Dimensions
Dimension Description Default
time Number of measured backscatter profiles within a NetCDF
file UNLIMITED
range Number of points measured and stored in backscatter
profiles in the NetCDF format with a resolution of
5 … 30 m
depending on the setting, default 15 m.
1024
range_hr Number of points stored in the high-resolution NetCDF
backscatter profile with a resolution of 5 m 32
layer Number of cloud layers transmitted in telegrams and stored
in NetCDF files 3
Table 13 Dimensions in NetCDF.
Global attributes
Attribute Description Type
title Heading for graphical representation, here
“Lufft Berlin, CHM 15”
Text
source see device_name (left for compatibility reasons) Text
device_name Serial number, device name of the instrument, e. g. CHM090104 Text
serlom Serial number of laser optical unit, e. g. TUB080022 Text
day day of a month, on which the data was recorded int
month Month as a number, January = 1,
…
int
year year, in which the data were recorded: e. g. 2019 int
location* Location / site of measurement Text
institution* Institution or company Text
wmo_id* WMO station ID int
software_version Operating system, FPGA, firmware, CloudDetectionMode
e. g. 18.10.1 2.13 1.020 0 for OS-Version 18.10.1, FPGA 2.13,
Firmware 1.020 and CloudDetection algorithm variant 0
Text
comment* Any descriptive comment Text
overlap_file Name / time of the overlap correction function used to generate the beta
variables Text
Table 14 Global attributes in NetCDF.
* User-defined settings