Notes of the EISCAT Svalbard radar observations (Last updated on Dec. 24, 2006.) ------------------------------------------------------------ Pulse code: taro (a new code developed for the sweeping observation) hilde Antenna mode: sweepAZ1_pattern.elan (for taro) sweepAZ2_pattern.elan (for hilde) ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/12 05:00-08:00 UT (3 hours, ESR): ------------------------------------------------------------- -The 1st priority run /kst/exp/ei/taro/taro fm sweepAZ1 SP 05:00-06:00 UT: AZ = 30.4 +- 60 deg, EL = 30 deg. 06:00-07:30 UT: AZ = 12.8 +- 60 deg, EL = 30 deg. 07:30-08:00 UT: AZ = -20.5 +- 60 deg, EL = 30 deg. Cycle period is 196 sec. **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/12 5:09 83.17 46.9 550 971 30.96 30.40 2006/12/12 6:47 83.23 26.06 400 727 30.66 12.80 Mostly snowing. Started the ESR SP at 05 UT, and stopped it at 08 UT, 1 hour earlier than expected, because of a problem with the electric power plant. 06:34-06:44 RF DISABLED airport interlock ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/13 05:00-09:00 UT (4 hours, ESR): ------------------------------------------------------------- -The 2nd priority **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/13 5:28 83.22 44.08 510 922 30.18 28.57 2006/12/13 7:05 83.27 17.37 400 725 30.77 -11.02 2006/12/13 8:43 83.19 -4.29 430 817 30.37 -23.41 Cloudy, but sometimes clear sky. Quiet ionospheric condition. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/14 05:30-09:30 UT (4 hours, ESR): ------------------------------------------------------------- -The 3rd priority **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/14 5:47 83.17 40.49 480 868 30.3 26.68 2006/12/14 7:24 83.18 13.67 370 684 30.18 -3.19 2006/12/14 9:15 83.23 -13.04 520 938 30.21 -29.06 Cloudy, but sometimes clear sky. Quiet ionospheric condition. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/15 05:40-09:40 UT (4 hours, ESR): ------------------------------------------------------------- (1) UK and SW SP between 04:00-05:40 UT (2) The 1st priority between 05:40-07:00 UT (3) The 2nd priority between 07:00-09:40 UT combined the two experiments (1) and (2). run /kst/exp/hilde/hilde fm sweepAZ2 SP 04:00-05:30 UT: AZ = 35.0 +- 51 deg, EL = 30 deg. 05:30-07:00 UT: AZ = 17.4 +- 51 deg, EL = 30 deg. Cycle period is 204 sec. **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/15 4:29 83.10 60.43 670 1187 30.02 35.04 2006/12/15 6:06 83.15 29.76 410 745 30.61 17.37 2006/12/15 7:40 83.18 13.74 380 689 30.87 -3.09 2006/12/15 9:20 83.28 -16.44 550 991 30.03 -30.34 Cloudy. Cusp moved equatorward, and electron density was very low in the polar cap. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/16 06:00-10:00 UT (4 hours, ESR): ------------------------------------------------------------- -The 3rd priority **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/16 6:25 83.17 26.67 400 724 30.81 13.78 2006/12/16 8:02 83.18 -0.14 420 768 30.25 -19.72 2006/12/16 9:39 83.19 -19.79 580 1040 30.05 -32.29 Cloudy, but sometimes clear sky. Quiet ionospheric condition. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/17 04:50-08:50 UT (4 hours, ESR & VHF): ------------------------------------------------------------- -The 3rd priority for ESR run **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/17 5:07 83.3 44.33 520 934 30.37 28.14 2006/12/17 6:44 83.23 23.16 390 710 30.64 9.29 2006/12/17 8:21 83.17 -3.8 450 812 30.64 -23.13 -The 1st priority for VHF run runexp /kst/exp/tau8/tau8 fm lowel SW Clear sky, but ionosphere was quiet after 4 UT. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/18 05:00-09:00 UT (4 hours, ESR & VHF): ------------------------------------------------------------- -The 2nd priority for ESR run -> The 1st priority run /kst/exp/hilde/hilde fm sweepAZ2 SP 05:00-06:20 UT: AZ = 26.3 +- 60 deg, EL = 32 deg. 06:20-07:40 UT: AZ = -3.0 +- 60 deg, EL = 32 deg. 07:40-09:00 UT: AZ = -25.9 +- 60 deg, EL = 32 deg. Cycle period is 196 sec. **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/18 5:25 83.22 40.48 480 871 30.21 26.33 2006/12/18 7:02 83.27 13.74 380 698 30.36 -3.00 2006/12/18 8:40 83.19 -7.46 470 855 30.17 -25.86 -The 1st priority for VHF run runexp /kst/exp/tau8/tau8 fm lowel SW The EL angle of 32 deg (not 30 deg) was used in order to investigate and reduce the ground clutter effect. There is a problem with data recording when taro pulse code was used at 05:00 and 6:20 UT, so we used hilde pulse code today. ESR observations started at 05:17 UT, and stopped at 09:00 UT. Relatively clear sky, and aurora was sometimes seen overhead around 6-8 UT. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/19 05:20-09:20 UT (4 hours, ESR & VHF): ------------------------------------------------------------- -The 1st priority for ESR run run /kst/exp/ei/taro/taro fm sweepAZ1 SP 05:20-06:40 UT: AZ = 24.1 +- 60 deg, EL = 32 deg. 06:40-08:00 UT: AZ = 6.8 +- 60 deg, EL = 32 deg. 08:00-09:20 UT: AZ = -27.8 +- 60 deg, EL = 32 deg. Cycle period is 196 sec. **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/19 5:44 83.18 37.09 450 822 30.11 24.09 2006/12/19 7:21 83.30 21.32 470 761 35.45 6.80 2006/12/19 8:59 83.25 -11.1 500 909 30.00 -27.82 -The 1st priority for VHF run runexp /kst/exp/tau8/tau8 fm lowel SW Cloudy. Disturbed ionospheric condition. upflows and shear flows were seen. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/20 05:30-09:30 UT (4 hours, ESR & VHF): ------------------------------------------------------------- -The 1st priority for ESR run run /kst/exp/ei/taro/taro fm sweepAZ1 SP 05:30-06:55 UT: AZ = 14.5 +- 60 deg, EL = 32 deg. 06:55-08:20 UT: AZ = -12.1 +- 60 deg, EL = 32 deg. 08:20-09:30 UT: AZ = -28.2 +- 60 deg, EL = 32 deg. Cycle period is 196 sec. **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/20 6:03 83.24 27.57 400 735 30.21 14.50 2006/12/20 7:40 83.25 6.56 390 720 30.05 -12.07 2006/12/20 9:17 83.3 -20.2 610 1087 30.16 -28.23 08:56-09:07 RF DISABLED airport interlock -The 1st priority for VHF run runexp /kst/exp/tau8/tau8 fm lowel SW Some troubles occurred on Tx8 around midnight, and therefore we start our SP without Tx8 and Tx1. Output power was about 580 kW. After 09:23 UT we used sweeping mode with hilde pulse code, and also the fixed antenna position with 32m dish, in order to understand why the system temperature of the 32m dish fluctuated quickly. Snowing. Disturbed ionospheric condition. upflows and shear flows were seen. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/21 06:00-10:00 UT (4 hours, ESR & VHF): ------------------------------------------------------------- -The 2nd priority for ESR run -> The 1st priority run /kst/exp/ei/taro/taro fm sweepAZ1 SP 06:00-07:20 UT: AZ = 10.5 +- 60 deg, EL = 32 deg. 07:20-08:40 UT: AZ = -16.8 +- 60 deg, EL = 32 deg. 08:40-09:23 UT: AZ = -32.4 +- 60 deg, EL = 32 deg. Cycle period is 196 sec. run /kst/exp/hilde/hilde fm sweepAZ2 SP 09:23-09:44 UT: AZ = -32.4 +- 51 deg, EL = 32 deg. Cycle period is 204 sec. run /kst/exp/ei/taro/taro fm lowelnorth3 SP 09:45-10:00 UT: AZ = 0.0 deg, EL = 32 deg. **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/21 6:22 83.23 24.15 390 714 30.45 10.52 2006/12/21 7:59 83.2 2.62 410 747 30.48 -16.75 2006/12/21 9:36 83.36 -23.97 630 1121 30.10 -32.36 -The 1st priority for VHF run runexp /kst/exp/tau8/tau8 fm lowel SW There was an accident of Tx8 around midnight, and therefore we start our SP without Tx8 and Tx1. Total output power was about 580 kW. We used sweeping mode with helde pulse code, and also fixed antenna position with 32m dish because system temperature of 32m dish fluctuated quickly. Snowing. Disturbed ionospheric condition, and ion upflows were seen. ------------------------------------------------------------- ------------------------------------------------------------- 2006/12/22 06:00-10:30 UT (4.5 hours, ESR) 2006/12/22 06:30-10:30 UT (4 hours, VHF): ------------------------------------------------------------- -The 1st priority for ESR run run /kst/exp/ei/taro/taro fm sweepAZ1 SP 06:00-09:46 UT: AZ = 5.6 +- 60 deg, EL = 32 deg. Cycle period is 196 sec. run /kst/exp/ei/taro/taro fm sweepEL1 SP 09:47-10:30 UT: AZ = 0.0 deg, EL = 90 +- 60 deg. Cycle period is 196 sec. **********(Reimei satellite conjunctions:)********** date time glat glon height range EL AZ 2006/12/22 6:41 83.25 20.27 380 699 30.31 5.56 2006/12/22 8:18 83.26 -6.58 470 852 30.31 -24.75 2006/12/22 9:55 83.27 -27.6 670 1182 30.21 -33.77 07:56-08:06 RF DISABLED airport interlock 08:34-08:44 RF DISABLED airport interlock 08:56-09:06 RF DISABLED airport interlock 09:14-09:24 RF DISABLED airport interlock -The 1st priority for VHF run runexp /kst/exp/tau8/tau8 fm lowel SW There was a trouble with Reimei, so that we didn't change the sweeping antenna position. After 09:47 UT we tested EL scanning observation. Cloudy and snowing. -------------------------------------------------------------