Lufft CHM 15k Nimbus, Руководство пользователя

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Data Evaluation/ Sky Condition Algorithm (SCA)
Revision R09, November 2016 71
9.12 Sky condition index (SCI)
The sky condition index is written in the extended data telegram and in the
NetCDF files. It should allow the user to interpret data in cases when clouds are
not detected. In older CHM 15k systems the variable was handled as precipita-
tion index. Table 20 shows how the index is defined.
Value Description
-- (telegram)
-2 (NetCDF) system hardware failure or system not ready
00 no fog nor precipitation detected
01 rain
02 fog
03 snow or freezing rain
04 window transmission reduced, droplets on the window
// (telegram)
-1 (NetCDF)
-3 (NetCDF) observation is not made,
in NetCDF, the numerical values -1, -3 are used
instead of // in the telegram
Table 20: Sky condition index (SCI)