Flight Summary Report
Author: Dr. Michael King
Mission Scientist: Dr. Michael King
ER-2 Pilot: Jim Barrilleaux
Takeoff: 2010 (UTC)
Landing: 0100 (UTC)
Duration: 4:50 (h:mm)
Objective and Summary:
- Fly the ER-2 repeatedly over the surface site at Barrow (71░19.37'N, 156░34.9'W)
and nearby open water and fast ice of the Chukchi and Beaufort Seas.
- The ER-2 flew three parallel and repeating ground tracks of 261km in length
that were parallel to the NOAA-14 ground track at 2304 UTC (heading of 347.13░
at SHEBA). Due to malfunction of the backup navigation equipment onboard the
aircraft, the mission design that included parallel ground tracks over SHEBA
was modified to fly a similar pattern over ARM.
- The entire flight track over the Chukchi and Beaufort Seas was cloud free,
with Arctic stratus present over land and nearby coastal fast ice.
- All times, orbital inclinations, and timings were based on overflights of SHEBA
(76░20.76' N), rather than Barrow, so some of the angles are off of the
intended times and orbits planned for this mission.
- F-14 satellite (2237 UTC)
- NOAA-14 satellite (2304 UTC)
- Principal plane of the Sun (2218 UTC)
Key Flight Legs:
- The ER-2 flew a NNW flight line from point 1 (70░09'N, 155░31'W) to point 2
(72░26'N, 157░14'W), then reversed course, overflying the ARM site each time
(two passes). The aircraft then flew a parallel track displaced 40km to the
West with two round trip flight legs, followed by another pair of flight legs
displaced 40km to the East. Each flight leg was 261km in length. The flight
tracks were all parallel and on a heading of 347.1░/167.1░, corresponding to
the orbital inclination of NOAA-14 as it overflew the SHEBA ice station at
- The AirMISR was turned on for 5 acquisitions: over the Barrow ARM site and
nearby tundra, including acquisitions when the sun was in the orbital
inclination of NOAA-14 (at least at SHEBA), and when the NOAA-14 and F-14
satellites passed over the area. The AirMISR operated at the following times
with notes of observed clouds as seen by the instrument:
- 2112.5-2128.5 UTC (ARM)
- 2139.5-2154.5 UTC (ARM; sun in principal plane at ARM)
- 2208.5-2225.5 UTC (West; sun in principal plane at SHEBA)
- 2234.25-2250 UTC (West; F-14)
- 2302.5-2317.5 UTC (East; NOAA-14)
- 2330.75-2345.75 UTC (East)
- The ER-2 pilot reported Arctic stratus conditions over the tundra until 55km
North of Barrow, with clear sky and possible haze or thin cirrus over the ice.
- A single-layer stratus cloud system covered Barrow, extending about 100km
North over the ice. Cloud top temperatures were nearly uniform, surface winds
were Easterly around 20kts.
- AirMISR (Airborne Multi-angle Imaging Spectroradiometer): The 2nd,
3rd, and 4th runs collected all 9 look angles, while the
remaining 3 scenes collected a minimum of nadir and the first 4 view angles.
- AMPR (Advanced Microwave Precipitation Radiometer): Worked well
- CLS (Cloud Lidar System): Worked well
- HIS (High-resolution Interferometer Sounder): Worked well
- MAS (MODIS Airborne Simulator): Port 4 (8.3-14.0 Ám) disconnected for nitrogen purge
- MIR (Millimeter-wave Imaging Radiometer): Worked well
- SSFR (Solar Spectral Flux Radiometer): Worked well