Description


Page : 686

Sondrestrom Lidar Operation Log


Operator(s) : E.Guðmundsson
Purpose : Routine data colection
Date(s) : 001121 - 001122
File(s) : L11210 - L11220
Comments : The first two hours of the run contain good data. For the following hours the
count rates vary a lot and at times down to nearly zero.
Logfile : l0011210.log

Setup:0


Page : 687
[Variables]
Dye Power=85mJ
Rayleigh Power=530mJ

[0]
Iris=2mm
Rayleigh System=On
Dye System=On
Daystar=Out
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)

Logsheet:0


Page : 688

Sondrestrom Lidar Operation Log


Log Sheet 1 of 1
Operators : E.Guðmundsson
Date(s) : 001121 - 001122
File(s) : L11210 - L11220
FilesTime [UT]CommentsCntSOpe
L1121021:30:10Start of experiment0
L1121022:04:07good counts, clear skies94650EG
L1121022:42:16something funny going on on the sodium side of things!92230EG
L1121022:45:15Looks like the dye laser energy has fallen to 70mJ92820EG
L1121022:45:54Incremented92190EG
L1121122:46:51Counts91760EG
L1121122:58:06thins haze present at ~7km87670EG
L1121123:14:04is getting thicker56420EG
L1121123:18:22Heavy clouds to the south0EG
L1121123:56:35Checked dye energy, stable at 70mJ, The drop in energy must30420EG
have been the normal drop during warmup. pump at 410mJ
L1121101:14:31Still getting sodium data but we are really knocked down by 6680EG
the clouds now.
L1121101:49:23Almost no signal left.....but still seeing the sodium layer!600EG
L1121101:59:38Counts on the way up for the moment11530EG
L1122002:02:06Incremented30420EG
L1122002:11:29The hole must have passed by, zero counts now50EG
L1122002:21:09End of experiment30EG