Description

Page : 1889

Sondrestrom Lidar Operation Log

Operator(s) : Christian Have Pedersen
Purpose : Dq. on 532 and 607nm channels.
Date(s) : 071210 - 071210
File(s) :
Comments : Been tweaking the first 2 hours. Problem with frontend mount. Need to construct
better and more reliable mount.
Logfile : L0712100.log

Setup:0

Page : 1890
[Variables]
Chopper delay=34
Rayleigh Power=500mJ

[0]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=0.5mm
Rayleigh path attenuation=0dB
Dye System=Off
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 : 1891

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : Christian Have Pedersen
Date(s) : 071210 - 071210
File(s) :

Files	Time [UT]	Comments	Cnt	S	Ope
20071208_000	00:40:24	Start of experiment		0	cp
20071208_000	01:01:09	Conditions seems okay. But quality of data is getting degraded		0	cp
		badly by this nearfield spike. The spike is static and I have no idea
		where it comes from. First hour yesterday was eexcellent, but
		then this spike ?. I will keep trying to located the source of
		this spike.
20071208_000	01:56:54			0	cp
20071208_000	02:41:37	It has been difficult to obtain a decent profile today.	588	0	cp
20071208_000	02:42:19	Will now leave it alone.		0	cp
20071208_000	02:44:05	That spike at 5 km alt. really is annoying.	571	0	cp
20071208_000	02:49:50		557	0	cp
20071208_000	02:52:35		546	0	cp
20071208_000	02:53:12		565	0	cp
20071208_000	02:54:42		575	0	cp
20071208_000	03:22:27		531	0	cp
20071208_000	03:24:45		539	0	cp
20071208_000	04:12:27		536	0	cp
20071208_000	04:31:27	Now the profile is getting degraded, will have to readjust.	470	0	cp
20071208_000	05:01:07			0	cp
20071208_000	05:15:17	Decent profile again. Still excessive low alt. return.	573	0	cp
		But the noise subtracted counts at 40 km alt. is better now.
20071208_000	05:18:16		542	0	cp
20071208_000	05:36:12		574	0	cp
20071208_000	06:01:24		544	0	cp

Logsheet:1

Page : 1892

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : Christian Have Pedersen
Date(s) : 071210 - 071210
File(s) :

Files	Time [UT]	Comments	Cnt	S	Ope
20071208_000	06:13:55	Profile slipping again...Readjusting.	400	0	cp
20071208_000	06:32:02	Shutting down now. Need to work on the frontend mount		0	cp
		It is impossible to maintain a profile.
20071208_000	06:32:52	End of experiment		0	cp