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Vaisala ceilometers

Various older Vaisala ceilometers. See also Vaisala CL61.

Instrument ID: ld40, ct25k, cl31 or cl51

Recommended files

File	Format	Description
*.DAT	text	File extension may be different depending on collection system.

Example

Example configuration for cloudnet-submit:

[[instrument]]
site           = "chilbolton"
instrument     = "cl51"
instrument_pid = "https://hdl.handle.net/21.12132/3.1ca2b7d6323f486b"
path_fmt       = "/data/ceilo/%Y%m%d/*%m%d*.DAT"

Calibration

Field Name	Type	Unit	Description
calibration_factor	float	1	Calibration factor.
range_corrected	bool		False if noise is not range corrected (i.e. noise_h2 off mode). For new measurements, noise_h2 on mode should be used.
time_offset	int	min	Time offset compared to UTC (positive values mean ahead of UTC, e.g. 120 for Finnish standard time).

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