Description

Page : 50

Sondrestrom Lidar Operation Log

Operator(s) : E.Gudmundsson
Purpose : Brent Watkins Sodium campaign in conjunction with IS radar
Date(s) : 980517 - 980518
File(s) : L9805170 - L9805172
Comments :
Logfile : l9805170.log

Setup:0

Page : 51
[Variables]
Dye Power=71mJ

[0]
90% PMT Iris=not_installed
Rayleigh System=Off
Dye System=On
Daystar=Out
Polerizer=Out
HalfWave Plates=In

Logsheet:0

Page : 52

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : E.Gudmundsson
Date(s) : 980517 - 980518
File(s) : L9805170 - L9805171

Files	Time [UT]	Comments	Cnt	S	Ope
L9805170	22:19:10	Start of experiment.	58	0	EG
		One high voltage unit won't turn on
L9805170	22:20:29	High voltage unit swapped resonance PMT with working HV	62	0	EG
L9805170	22:48:48	Sodium Convergence mirror adjusted	0	0	EG
L9805170	22:58:17	Going to look at the broken HV unit	0	0	EG
L9805170	23:13:45	SZA=82.5 high background sodium not detectable yet		0	EG
L9805170	23:14:19	Very clear skies		0	EG
L9805170	23:46:22	Fuse gone on PMT HV marked 10%. Installed a new 1A fuse		0	EG
		but it look like the voltage is way down (actual fault present)
		I'm therfore not running with the rayleigh system
L9805170	00:08:05	Sodium background still high, 650 counts with SZA =86.6		0	EG
L9805170	00:35:04	Sodium Convergence mirror adjusted		0	EG
L9805170	00:35:11	Dye system tuned to 589.158 nm		0	EG
L9805170	01:02:07	I state that the sodium layer is now visible with noise subtr.		0	EG
		and 10 profile integration and a bin width of 192m
L9805170	01:04:43	SZA=89.9		0	EG
L9805170	01:49:10	SZA=91.9		0	EG
L9805171	02:20:44	Sodium beginning to emerge on noise subtr.raw profile using		0	EG
		192m subintegrated bin width
L9805171	02:22:23	SZA=92.9		0	EG
L9805171	02:32:16	Sodium Convergence mirror adjusted		0	EG
L9805171	02:35:43	Sodium Convergence mirror adjusted		0	EG
L9805171	02:38:44	Sodium Convergence mirror adjusted		0	EG
L9805171	02:43:15	Sodium Convergence mirror adjusted		0	EG

Logsheet:1

Page : 53

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : E.Gudmundsson
Date(s) : 980518 - 980518
File(s) : L9805171 - L9805172

Files	Time [UT]	Comments	S	Ope
L9805171	02:49:45	Sodium Convergence mirror adjusted	0	EG
L9805171	03:03:41	Dye system tuned to 589. 161nm	0	EG
L9805171	03:19:44	Dye system tuned to 589.162nm	0	EG
L9805171	03:23:29	Dye system tuned to 589.158 nm	0	EG
L9805172	03:33:19	Background is 40 counts with 192m subintegration of bins	0	EG
L9805172	03:34:27	SZA=93.5 , we are probably at midnight now	0	EG
L9805172	03:35:13	You can see the sodium on the raw profile with 192m bins	0	EG
L9805172	03:35:46	But it is wery week as the sodium counts are around 10 vs a	0	EG
		backgroundn of 40
L9805172	04:26:13	No longer able to see the sodium on a raw, noise subtracted	0	EG
		192m bin width profile
L9805172	05:09:52	I'm still able to see sodium on the 10 profile integration	0	EG
		using noise subtraction and 192m bin resolution
L9805172	05:11:52	End of experiment	0	EG