Helo July 15
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Helo July 15 |
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| Photo flight #8 - large grid | ||||
| interval 21 s (pulse duration=0.1 s, timing= 20 s) | ||||
| Kt 19 sampling rate 1 Hz | ||||
| altitude 6000' entire flight box with a pass at 1000' by the ship afterwards. | ||||
| Thin patchy fog; cloud deck at 5000 meters | ||||
| Light winds from the south | ||||
| TCG, BL, HE Present on flight | ||||
| GPS: | Lat. | Long. | Heading | |
| SHIP | 78o 06.1N | 166o 07.0W | ||
| A | 78o 06.1N | 165o 02.0W | 90 | |
| B | 78o 19.6N | 165o 02.0W | 0 | |
| C | 78o 19.6N | 167o 15.0W | 270 | |
| D | 77o 52.6N | 167o 15.0W | 180 | |
| E | 77o 52.6N | 166o 07.0W | 90 | |
| TIME | NOTES | NIKON | VIDEO | KT-19 |
| 10:54:19 | Takeoff | |||
| 10:54:45 | Switched On | |||
| 11:01:35 | Switched On | |||
| 11:02:29 | Begin the line from the ship to point A | switched on | Poly 1 Switched On | |
| Light fog but surface plainly visible | ||||
| Pack quite loose | ||||
| Leads still have NW/SE overall fabric but seem randomized on small scale | ||||
| 11:09:06 | Start turn at A | Poly 1 switched off for turn | ||
| 11:09:44 | End turn | Poly 1 switched back on | ||
| more light fog; surface still clearly visible | ||||
| 11:15:45 | Start turn at B | Poly 1 switched off for turn | ||
| 11:16:25 | End turn | Poly 1 switched back on | ||
| same atmospheric conditions | ||||
| 11:23:34 | Fog a bit thicker | Poly 1 switched off | ||
| 11:25:48 | Fog decreased | Poly 1 switched back on | ||
| Ground speed 116 kt | ||||
| 11:26 | briefly clear below - no fog at all | |||
| 11:29:35 | Start turn at C | Poly 1 switched off for turn | ||
| 11:30:12 | End turn | |||
| some fog | ||||
| 11:30:48 | Poly 1 switched back on | |||
| There are areas perhaps 100 to 200 m wide that have no melt ponds | ||||
| 11:43:20 | Start turn at D | Poly 1 full | ||
| 11:43:58 | End turn | |||
| 11:44:18 | Poly 2 on line | |||
| 11:46 | A lot of FY ice present to the south and east | |||
| 11:50:27 | Start turn at E | Poly 2 switched off for turn | ||
| 11:51:04 | End turn | Poly 2 switched back on | ||
| Fog almost gone for awhile | ||||
| Air speed 105-110 kt | ||||
| 11:57:15 | End of line at the ship | switched off | Poly 2 switched off for maneuvering | |
| 12:01:27 | Reached 1000' elevation; begin NS line past ship on east side | Poly 2 switched back on | ||
| 12:02:13 | Over open water | Switched on | ||
| 12:04:03 | Beginning of lead on south end of line | |||
| 12:04:18 | End of NS line | Poly 2 switched off | ||
| Heli maneuvered to the east a bit and began a line from south to north to pass close to Tuk | ||||
| 12:06:12 | Passing near Tuk | Poly 2 switched on | ||
| 12:06:30 approx | Poly 2 switched off | |||
| VCR switched off; total elapsed time 1 hr 8 min | Kt-19 switched off | |||
| 12:10:08 | Helicopter landed | |||
| Some patches of dirty ice were seen. They are quite striking but cover probably less than 1% of the surface | ||||
| TCG and HE estimate that 25-40% of surface is covered by melt ponds | ||||
| Photos should have less contrast - mostly diffuse light, but camera was left set at f/4 | ||||
| FY ice still less puddled, snow ponds very bright blue near ridges | ||||
| Pilot flew very consistently at 6000' | ||||
| Linear melt ponds very clearly aligned (and connected) across floes | ||||
| At low altitudes beginning, end of flight could see that many melt ponds had broken through the ice cover entirely | ||||
| The down-looking video is pretty bad here- camera has suffered too many helicopter flights? Will fly backup camera next flight | ||||
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