Description


Page : 852

Sondrestrom Lidar Operation Log


Operator(s) : J.Jørgensen, J.Kristensen, E.Guðmundsson, T.Jørgensen
Purpose : Routine data collection, tweek of the LC etalon roll and tilt.
Date(s) : 010711 - 010715
File(s) : L107110 - L107155
Comments : Sporadic sodium detected
NLC detected

Total filesize: 195MB (205.388.898)
Logfile : l0107110.log

Setup:0


Page : 853
[Variables]
Dye Power=80mJ
Rayleigh Power=510mJ

[0]
Iris=0.6mm
Rayleigh System=On
Dye System=On
Etalon=Out
Daystar=In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0


Page : 854

Sondrestrom Lidar Operation Log


Log Sheet 1 of 4
Operators : J.Jørgensen, J.Kristensen, E.Guðmundsson, T.Jørgensen
Date(s) : 010711 - 010712
File(s) : L107110 - L107121
FilesTime [UT]CommentsCntSOpe
L10711011:15:03Start of experiment0JJ
L10711011:29:13Slow and missing triggers to the rayleigh system. Removed 17340JJ
the 50 ohm terminator on the trigger input.
L10711011:33:13Sodium tuned to .158 from .1520JJ
L10711011:56:18Rayleigh HG adj.23350JJ
L10711013:05:29Sodium tuned to .158 from .16019580JKr
L10711113:58:07Filenumber Incremented21810JKr
L10711216:34:33Filenumber Incremented22330JKr
L10711216:46:16Conv. mirror on both systems adj. Not easy because of 0JJ
clouds...
L10711220:30:07Incremented filenumber23950EG
L10711320:30:41Counts, scattered clouds drifting about.0EG
L10711321:21:21Sodium tuned from .160 to .15825710JJ
L10711323:01:49Sodium tuned from .156 to .15826190JJ
L10711301:21:13Incremented23780EG
L10712001:22:10Counts24520EG
L10712001:39:31Rayleigh Convergence mirror adjusted24680EG
L10712001:50:14Sodium Convergence mirror adjusted24770EG
L10712001:50:59Observing sporadic sodium now24770EG
L10712003:59:54The sodium layer total counts (sum of layer) seems to be0EG
growing fast now.
L10712005:07:29NLC detected re eq~67km20860EG
L10712005:11:42Incremented21980EG
L10712105:12:36counts, some haze up there22280EG

Logsheet:1


Page : 855

Sondrestrom Lidar Operation Log


Log Sheet 2 of 4
Operators : T.Jørgensen, J.Kristensen, J.Jørgensen, E.Guðmundsson
Date(s) : 010712 - 010713
File(s) : L107121 - L107131
FilesTime [UT]CommentsCntSOpe
L10712105:58:36Looks like the NLC has gone.21810TJ
L10712106:19:37I think it's still there. Re eq ~65 km.25970TJ
L10712106:30:45NLC stronger now Re eq~60 km.25140TJ
L10712209:33:37Filenumber increment.23990TJ
L10712209:47:57NLC gone.24310TJ
L10712211:10:10NLC back23120JKr
L10712312:06:58Filenumber incremented25340JKr
L10712313:33:33NLC gone27880JKr
L10712314:13:07NLC back?27140JKr
L10712314:38:47Filenumber incremented20600JKr
L10712519:59:35Filenumber incremented23300JJ
L10712520:37:40Clouds moving through...11460JJ
L10712523:14:29Lots of clouds around24780EG
L10712500:00:55Clouds overhead now6100EG
L10712500:25:26Incremented, Still some clouds1880EG
L10713000:25:58counts1950EG
L10713001:44:02Starting to get some signal back22620EG
L10713002:48:34Good signal now23590EG
L10713003:20:36Checked Rayleigh convergence, it's dead on.22660EG
L10713003:55:53Incremented0EG
L10713103:56:00counts24250EG
L10713104:26:00!! NLC detected24710EG
L10713104:31:36NLC altitude 85km R.eq~65km24430EG
L10713107:38:52NLC is weaker now.27660TJ

Logsheet:2


Page : 856

Sondrestrom Lidar Operation Log


Log Sheet 3 of 4
Operators : T.Jørgensen, J.Kristensen, J.Jørgensen, E.Guðmundsson
Date(s) : 010713 - 010714
File(s) : L107132 - L107145
FilesTime [UT]CommentsCntSOpe
L10713208:24:13Filenumber increment.27010TJ
L10713209:04:21Clouds are moving in18250TJ
L10713311:04:33Filenumber incremented24890JKr
L10713311:59:53NLC27870JKr
L10713312:38:08NLC gone27780JKr
L10713413:47:16 Filenumber incremented30130JKr
L10713516:20:08Filenumber incremented26150JKr
L10713517:10:04Clouds moving through20280JJ
L10713619:23:48Filenumber incremented26230JJ
L10713621:00:00checked Rayleigh HG, It's stable as far as I can tell26600EG
L10713600:04:45Incremented25950EG
L10714000:05:06counts26130EG
L10714003:53:09Incremented23850EG
L10714103:53:31counts23570EG
L10714208:04:28Incremented.27850TJ
L10714208:58:10NLC ?26860TJ
L10714209:57:31NLC detection, Re. ep.~ 60 km.25890TJ
L10714311:03:57Incremented23260JKr
L10714311:04:25NLC gone23260JKr
L10714413:38:24Incremented30490JKr
L10714413:40:10Sodium adj. from .156 to .15830720JKr
L10714517:21:10Filenumber incremented26510JJ
L10714517:25:16Sodium tuned from .156 to .15826180JJ
L10714517:53:48Sporadic sodium layer?0JJ

Logsheet:3


Page : 857

Sondrestrom Lidar Operation Log


Log Sheet 4 of 4
Operators : J.Jørgensen, E.Guðmundsson, T.Jørgensen, J.Kristensen
Date(s) : 010714 - 010715
File(s) : L107146 - L107155
FilesTime [UT]CommentsCntSOpe
L10714620:33:51Filenumber incremented24920JJ
L10714600:08:12Incremented26680EG
L10715000:08:44counts26680EG
L10715000:32:24NLC showing up at ~82km28190EG
L10715000:39:39Looks like the R eq. backscatter is arroung 68km now27850EG
L10715001:10:42AFter a brief pause in the NLC, the layer came back at a 28600EG
slightly higher altitude or ~82.5km.
L10715002:16:23The NLC hs been increasing in intensity at the same time 25350EG
it's been decending. Current R. eq. backscatter is ~55km
and altitude is ~81.5km
L10715002:53:00The NLC is now decending at a higher rate than before and24790EG
gettign close to 80km
L10715003:04:32looks like the layer is dissapaiting fast once it hit 80km24160EG
L10715003:34:09Incremented23970EG
L10715103:34:47counts23710EG
L10715103:41:21NLC no longer visible on the raw profile24400EG
L10715103:54:46NLC still visible in the 10 integrated profile R.eq.b.s ~75km23420EG
L10715207:50:56Incremented.27860TJ
L10715311:02:38Incremented21850Jkr
L10715311:22:35Sodium adj. from .160 to .15824830JKr
L10715413:47:13Incremented30640JKr
L10715517:25:09Filenumber incremented26580JJ
L10715518:47:49End of experiment0JJ