Description

Page : 1821

Sondrestrom Lidar Operation Log

Operator(s) : Christian Have Pedersen
Purpose : Data acquisition. Trouble shooting IR channel noise from yesterdays exp.
Date(s) : 070426 - 070426
File(s) : L20070426_000 - L20070426_001
Comments : The work with irises to optimize profiles is not possible due to high alt. clouds.
Experiment aborted and no useful data recorded.
Logfile : I2504070.log

Setup:0

Page : 1822
[0]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=0.5mm
Rayleigh path attenuation=0dB
Dye System=On
Sodium Field stop=0.5mm
Etalon=Out
Daystar=Out
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0

Page : 1823

Sondrestrom Lidar Operation Log

Log Sheet 1 of 1
Operators : Christian Have Pedersen
Date(s) : 070426 - 070426
File(s) : L20070426_000 - L20070426_001

Files	Time [UT]	Comments	S	Ope
L20070426_000	01:53:41	Start of experiment	0	cp
L20070426_000	01:56:17	No counts on RaNa display with new filename, so changing	0	cp
L20070426_001		to old filename, which means new experiment
L20070426_001	02:09:16	Optimizing irises.	0	cp
L20070426_001	02:25:37	Very difficult to converge sodium tonight	0	cp
L20070426_001	02:36:00	High alt. clouds are invading experiment.	0	cp

L20070426_001	02:37:44	Impossible to work with irises and still maintain the very	0	cp
		weak sodium layer in RaNa profile. This must be due to the
		high alt. clouds. Aborting experiment.
L20070426_001	02:43:07	End of experiment	0	cp