1998-06-03 (Flight #1760) |
Aircraft Flight SummaryDate: 1998-06-03 |
Flight Track Map
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Satellite Images from goes-09
1830-0100 UTC |
CAR - (QuickLook)
Imagery from CAR Instrument
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Flight Mission Details
Straight runs above and below cloud layers over the SHEBA site; BRDF measurements over altocumulus cloud and the ground (below cloud) over the SHEBA site.
Flight Path, Timing, and Measurements
The CAR started recording at 19:17 UTC, scan 100. On the flight out to the SHEBA site the aircraft ascended above uniform altocumulus clouds. At scan 3000 the auto-changing filter was tested and revealed the noise earlier noted in this mode. For the remainder of the flight the CAR was set to filterwheel 5 (2.2 µm).
On arrival at the SHEBA site 2 straight runs were made over the SHEBA site, scanning first down (position 1) with filterwheel 5 (2.2 µm), then up (position 4). The aircraft was flying at 11,500 ft over uniform altocumulus. This was followed by a 6 loop BRDF measurement over the cloud at 12,500 ft. Roll varied between 16-20°.
TABLE
The ER-2 was reported on-station at the beginning of the BRDF measurement (21:04 UTC).
At 21:21 UTC the aircraft descended to 200 ft (GPS altitude, inaccurate at the altitude) over the SHEBA site. There was some surface fog and broken ice, with stratus cloud above. Here the straight line runs and BRDF measurements made earlier were repeated, with the CAR first up (position 4), then down (position 1) on the straight line runs. Roll during the BRDF varied between 18-20°.
TABLE
The flight was completed with several straight line runs over the SHEBA site, above, below and through the altocumulus cloud. During these runs the CAR was positioned to scan the cloud. During the flight through the cloud the CAR was in position 4 (scanning up).
