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MODIS Airborne Simulator (MAS)

FLIGHT SUMMARY INFORMATION

Flight Track Map
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Flight: 98-075
Date: 4 June 1998
Location: Alaska / Arctic Ocean
Deployment: FIRE-ACE
Principal Investigator: King (NASA GSFC)
Additional Sensors: AirMISR, AMPR, CLS, MIR, HIS, SSFR

Data Evaluation
Overall quality is good

Processing Information
Level-1B Data in HDF format is available
Flight Line Summary
Spectral Band Configuration
Spectral Response Function Table

Browse Imagery
Flight Tracks: 19
Scanlines: 89110

Browse Imagery Table
Click a Flight Track number to view a quicklook image
Lat/Lon ranges are for the BEG-END scanline nadir pixels
Flight
Track
Time Span
(GMT)
Heading
(Deg)
Lat Range
(Deg North)
Lon Range
(Deg West)
Length
(scanlines)
Altitude
(meters)
1 19:25-19:38 336 67.32-68.72 150.54-152.37 4952 ~20000
2 19:38-19:51 335 68.72-70.10 152.37-154.45 4995 ~20000
3 19:51-20:05 333 70.10-71.46 154.45-156.84 4994 ~20000
4 20:05-20:14 331 71.46-72.34 156.85-158.63 3332 ~20000
5 20:14-20:17 349 72.42-72.70 158.75-158.96 936 ~20000
6 20:17-20:32 345 72.72-74.35 158.95-160.68 5430 ~20000
7 20:32-20:38 344 74.35-75.10 160.70-161.60 2497 ~20000
8 20:39-20:42 316 75.18-75.38 161.82-162.64 928 ~20000
9 20:44-21:05 7 75.62-78.03 163.09-162.22 7726 ~20000
10 21:10-21:30 184 77.98-75.65 164.00-164.56 7603 ~20000
11 21:35-21:55 4 75.69-78.03 166.02-165.74 7427 ~20000
12 21:59-22:20 182 78.03-75.69 167.50-167.50 7616 ~20000
13 22:21-22:35 141 75.53-74.33 167.11-163.40 4999 ~20000
14 22:35-22:48 143 74.33-73.09 163.39-160.23 4936 ~20000
15 22:48-23:02 147 73.09-71.81 160.24-157.51 4999 ~20000
16 23:02-23:04 150 71.81-71.61 157.54-157.16 742 ~20000
17 23:04-23:17 150 71.59-70.27 157.08-154.75 4999 ~20000
18 23:17-23:31 151 70.27-68.93 154.77-152.63 4999 ~20000
19 23:31-23:44 153 68.93-67.58 152.63-150.76 5000 ~20000
View all Quicklooks in sequence
Flight Summary Report

Author: Steve Platnick
Mission Scientist: Steve Platnick
ER-2 Pilot: Bill Collette
Takeoff: 1900 (UTC)
Landing: 0030 (UTC)
Duration: 5:30 (h:mm)

Objective and Summary:

  • Overfly the region between the SHEBA ice camp (7651'N, 16730'W) and an area about 80km to the East, in order to overfly cirrus being advected over the region from the Northwest. Flight useful for cloud remote sensing and cloud masking validation, and sea ice retrievals in the presence of changing cloud cover.
  • Overfly the ARM site on outgoing and incoming flight legs.

Coordinations:

  • F-14 satellite (2137 UTC)

Key Flight Legs:

  • The ER-2 overflew the ARM site and then headed Northwest towards the SHEBA ice station. Then flew four parallel North-South flight legs of about 280km in length, offset by 40km, starting from the East of the ice station and ending over the station. The ER-2 overflew the ARM site on the return to Ft. Wainwright.
  • The AirMISR was scheduled for six runs, twice over the ice station and four times during the parallel flight legs. All six runs failed for unknown reasons.

Pilot Report:

  • The ER-2 pilot reported solid undercast cloud cover over the entire mission.

Meteorology:

  • Extensive clouds cover over the ice station in the morning report. At 1600 UTC, the radar showed cloud layers at the surface, 0.8-1.0km, and 6.5-8.5km. Satellite imagery showed cloud tops around 3-3.5km. Light surface winds out of the Southwest at 5kts. A band of cirrus running Southwest to Northeast was expected to move over the ER-2 operations area during the morning, with thinner cirrus likely in the Eastern flight legs. The cirrus was associated with a low to the Northwest of the ice station.
  • At 2000 UTC (about 45 minutes before the ER-2 began its Eastern most leg), the ice station reported surface winds at 22 kts, 190 and a ceilometer cloud base of about 0.2km. Radar showed two cloud layers: a lower one just over the surface up to 0.5km and a higher layer between 4.5-7km, and intermittently up to 9km.

Instrument Status:

  • AirMISR (Airborne Multi-angle Imaging Spectroradiometer): Failed
  • AMPR (Advanced Microwave Precipitation Radiometer): Worked well
  • CLS (Cloud Lidar System): Partial failure (only linear channel worked)
  • HIS (High-resolution Interferometer Sounder): Worked well
  • MAS (MODIS Airborne Simulator): Worked well
  • MIR (Millimeter-wave Imaging Radiometer): Intermittent noise in some channels
  • SSFR (Solar Spectral Flux Radiometer): Worked well

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Flight 98-075

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Sample Imagery
Click image for full resolution
Track #11
Arctic Ocean
Click to load the full resolution image Flight Direction Indicator
R: 2.13µm
G: 0.95µm
B: 0.65µm

Sample Imagery
Click image for full resolution
Track #15
Arctic Ocean
Click to load the full resolution image Flight Direction Indicator
R: 2.13µm
G: 0.95µm
B: 0.65µm