Operating Manual CHM 15k
R13 / 07-2019
Data Evaluation / Sky Condition Algorithm (SCA)
62
9.11 Sky Condition Index (SCI)
To better understand certain events, the Sky Condition Index is written to the extended data telegram and
NetCDF files. In older CHM systems, the variable was treated as a precipitation index.
Table 20 shows how the index is defined.
Value
Description
--
-2 (NetCDF)
System hardware error or system not yet ready for operation
(-2 in NetCDF)
00
Neither fog nor precipitation detected
01
Rain
02
Fog
03
Snow or freezing rain
04
Reduced window transmission, drops on the windows
// (telegram)
-1 (NetCDF)
-3 (NetCDF)
No observation is made in NetCDF, the numerical values -1, -3 are used in the
telegram instead of //
Table 20 Sky Condition Index (SCI).
Summary of Contents for CHM 15k
Page 1: ...General Information 1 Titelseite...
Page 73: ...Index of Tables 73...
