Description


Page : 1513

Sondrestrom Lidar Operation Log


Operator(s) : E.Guðmundsson
Purpose : Run coordingated with IS Radar. User Craig Heinselman
Date(s) : 040802 - 040803
File(s) : L20040802_002 - L20040803_001
Comments : Small cirrus present but hoping that I will get at least 4hours of good data.
NLC detected
Logfile : l0408021.log

Setup:0


Page : 1514
[Variables]
Dye Power=60mJ
Rayleigh Power=440mJ

[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 : 1515

Sondrestrom Lidar Operation Log


Log Sheet 1 of 2
Operators :
Date(s) : 040802 - 040803
File(s) : L20040802_002 - L20040803_001
FilesTime [UT]CommentsCntSOpe
L20040802_00223:38:06Start of experiment530
L20040802_00223:51:21Counts 45 noise 64450
L20040802_00223:59:00Changed chopper setting by 20us, chopper opening a tad420EG
to ;low
L20040802_00200:21:30Cirrus getting thicker. Still good data though.310EG
L20040802_00200:25:27Taking Daystar out of the path SZA+89.23290EG
L20040802_00200:27:51Daystar out of the path0EG
L20040802_00200:32:13Corrected waveplates, looks like there is still something wrong!0EG
L20040802_00200:33:01Modified Rayleigh chopper altitude0EG
L20040802_00200:34:27cirrus getting stronger.4520EG
L20040802_00200:46:08Looks like we have an NLC! altitude ~82km 68km Reyl.ecq4560EG
return. appers to be aprox 1km in thickness
L20040802_00201:27:41looks like there is a small "bump" on the profile just4210EG
under 80km?? I'm looking at this using bin subint and
20 profile integration.
L20040803_00001:44:39Cirrus increasing in thickness again - counts down2260
L20040803_00002:29:12Converged Rayleigh system2320
L20040803_00002:34:28While not detecting an NLC I'm checking the tracking of 1840
the TX waveplate
L20040803_00002:37:40Plates not trackimg propperly, corrected the plate manually3450
L20040803_00002:42:40Converged the sodium3450
L20040803_00003:02:06Cloud cover thickening, still seeing a good profile though2620
L20040803_00104:28:22Cloud cover getting even thicker710
L20040803_00104:39:03total cloud cover now, lidar data useless30

Logsheet:1


Page : 1516

Sondrestrom Lidar Operation Log


Log Sheet 2 of 2
Operators : E.Guðmundsson
Date(s) : 040803 - 040803
File(s) : L20040803_001 - L20040803_001
FilesTime [UT]CommentsCntSOpe
L20040803_00104:54:11End of experiment40EG