Description


Page : 469

Sondrestrom Lidar Operation Log


Operator(s) : E.Gudmundsson, J.Jørgensen, K.Richmond
Purpose : Rutine data collection
Date(s) : 000304 - 000305
File(s) : L3041 - L3052
Comments : Note:
Sodium PMT HV=1800V
Sodium SR430 discriminator setting=-15mV
Logfile : l0003040.log

Setup:0


Page : 470
[Variables]
Dye Power=75mJ
Rayleigh Power=560mJ

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

[1]
Iris=min_opening
Rayleigh System=On
Dye System=On
Daystar=Out
Polerizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)

[2]
Iris=1.5mm
Rayleigh System=On
Dye System=On
Daystar=Out
Polerizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)

Logsheet:0


Page : 471

Sondrestrom Lidar Operation Log


Log Sheet 1 of 2
Operators : E.Gudmundsson, J.Jørgensen, K.Richmond
Date(s) : 000304 - 000305
File(s) : L3041 - L3051
FilesTime [UT]CommentsCntSOpe
L304120:19:14Start of experiment59770EG
L304220:45:02Incremented filenumber, Sodium system running now0EG
L304220:47:15Getting a good sodium profile SZA=90.959411EG
L304223:02:58Rayleigh HG and Conv. mirror adj28651JJ
L304223:49:01Rayleigh Convergence mirror adjusted26361KR
L304202:22:39Seeing one-integration spikes in Rayleigh counts by ~50%40671KR
every so often. Not sure why.
L304206:29:53Rayleigh Convergence mirror adjusted49741KR
L304206:54:59Incremented, opening up the iris to see if the signal goes up71311EG
L305006:57:02The iris is now at ~1.5mm69232EG
L305007:10:12Got signal gain on the Rayleigh, sodium not affected by this 98242EG
moved the sodium chopping up in altitude as it seemed
that we were getting signal induced noise in the system
L305009:22:34Closing the iris down again74092EG
L305009:24:58iris has been closed, incremented75381EG
L305109:26:10counts27291EG
L305110:08:51Sodium Convergence mirror adjusted10181EG
L305110:12:09Rayleigh Convergence mirror adjusted15431EG
It's prooving difficult to converge the Rayleigh with the min
opening on iris. Convergence is flaky and changes when you
close the door to the converging mirror!!!!
L305110:13:30counts21931EG
L305110:47:52SZA=88.5 still seeing sodium on the raw profile47931EG
Rayleigh S/N ~4000/7004878

Logsheet:1


Page : 472

Sondrestrom Lidar Operation Log


Log Sheet 2 of 2
Operators : E.Gudmundsson
Date(s) : 000305 - 000305
File(s) : L3051 - L3052
FilesTime [UT]CommentsCntSOpe
L305111:02:11Going to open up the receiver to install the daystar51691EG
SZA 87.3 and the sodium is still visible on the raw profile
L305211:02:17incremented1EG
L305211:10:51removed daystar again. going to have to do some adjustment 1EG
the signal went totally
L305211:33:52SZA=84.3 still seeing sodium on the raw profile1EG
L305212:06:13SZA=81.7 still seeing sodium on the raw profile close 1EG
to being burried in noise
L305213:26:18SZA 76.4 Sodium no longer visible79561EG
L305213:26:47End of experiment1EG