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MODIS Airborne Simulator (MAS)

FLIGHT SUMMARY INFORMATION

Flight Track Map
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Flight: 98-064
Date: 18 May 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: 18
Scanlines: 87643

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 20:14-20:35 333 67.86-70.11 151.13-154.42 8016 ~20000
2 20:35-20:57 331 70.12-72.30 154.42-158.47 8009 ~20000
3 20:57-21:13 338 72.34-74.04 158.58-161.28 5978 ~20000
4 21:13-21:16 332 74.06-74.34 161.36-161.94 1046 ~20000
5 21:16-21:28 327 74.36-75.45 161.95-164.83 4234 ~20000
6 21:28-21:35 332 75.51-76.18 164.97-166.56 2478 ~20000
7 21:36-21:56 91 76.34-76.19 166.26-156.94 7265 ~20000
8 22:02-22:25 280 76.18-76.35 156.19-167.76 8765 ~20000
9 22:30-22:32 91 76.31-76.31 168.17-167.26 680 ~20000
10 22:32-22:34 91 76.31-76.31 167.24-166.03 917 ~20000
11 22:44-22:46 187 75.43-75.18 165.23-165.34 823 ~20000
12 22:54-23:06 1 75.78-77.20 166.12-166.12 4489 ~20000
13 23:12-23:25 181 77.42-75.96 166.13-166.12 4886 ~20000
14 23:25-23:37 181 75.95-74.64 166.12-166.12 4370 ~20000
15 23:38-23:49 137 74.52-73.58 165.86-162.64 4210 ~20000
16 00:04-00:24 143 72.37-70.47 159.09-154.70 7806 ~20000
17 00:25-00:43 152 70.40-68.58 154.63-151.90 6817 ~20000
18 00:43-01:02 156 68.58-66.72 151.90-149.58 6854 ~20000
View all Quicklooks in sequence
Flight Summary Report

Author: Dr. Michael King
Mission Scientist: Dr. Michael King
ER-2 Pilot: Jim Barrilleaux
Takeoff: 1940 (UTC)
Landing: 0140 (UTC)
Duration: 6:00 (h:mm)

Objective and Summary:

  • Overfly surface sites at Barrow (7119.37'N, 15634.9'W) and the SHEBA ice station (7618.7'N, 1667.1'W), then to fly a repeated E-W and N-S cross pattern over SHEBA.
  • The mission was coordinated with the C-130Q at 2300 (solar noon), with the ER-2 flying North over the SHEBA ice station while the C-130Q was within the mid-tropospheric cloud layer for 50km on a Southbound leg.

Coordinations:

  • C-130Q aircraft (2300 UTC)
  • F-14 satellite (2145 and 2326 UTC)
  • NOAA-14 satellite (2207 UTC)
  • Solar noon (2300 UTC)

Key Flight Legs:

  • The ER-2 overflew the SHEBA ice station (point 1) during an E-W grid from point 2 (7618.7'N, 16745'W) to/from point 3 (7610'N, 157W) that consisted of 2 flight legs 284km in length, followed by a N-S grid from point 4 (7418.7'N, 1667.1'W) to/from point 5 (7712.7'N, 1667.1'W) that consisted of 2.4 flight legs 285km in length. These flight tracks passed over the SHEBA ice station at 2137, 2222, 2234.5, 2259, and 2322 UTC.
  • The AirMISR was turned on for 5 acquisitions: twice over the Barrow ARM site (enroute and return) and 3 acquisitions over the SHEBA ice station. The AirMISR operated at the following times with notes of observed clouds as seen by the instrument:
    • 2042.5-2057 UTC (ARM)
    • 2216.5-2230 UTC (SHEBA)
    • 2253.5-2306.5 UTC (SHEBA)
    • 2316.25-2331.25 UTC (SHEBA)
    • 0009.75-0026 UTC (ARM)

Pilot Report:

  • The ER-2 pilot reported 98% low cloud cover (undercast) starting approximately 200nm North of Fairbanks. Very few breaks in the clouds were observed.

Meteorology:

  • A multilayer cloud system consisting of low stratus, mid-level altocumulus (3-4.5km) and upper level cirrus (7.25-8km) reported at the SHEBA ice station.
  • A dry layer was seen in the sounding from the ice station between 900 - 650mb.
  • The satellite imagery showed a low level cloud to the South of SHEBA and a multi-layer cloud at SHEBA at 1415 UTC, with temperature inversions at 0.5, 3.2, and 4.2km. Winds were from 65 (ENE) at a speed of 21kts.

Instrument Status:

  • AirMISR (Airborne Multi-angle Imaging Spectroradiometer): No aft camera viewing (C and D camera positions) and log files not written
  • AMPR (Advanced Microwave Precipitation Radiometer): Worked well
  • CLS (Cloud Lidar System): Lidar worked properly, but navigation data not recorded
  • HIS (High-resolution Interferometer Sounder): Worked from take-off to near SHEBA the first overpass (~1.5 hr) and then failed; cause not determined
  • MAS (MODIS Airborne Simulator): Port 4 bands (8.3-14.0 m) noisy and unsatisfactory; will be taken off MAS for next 5 days to purge with nitrogen evaporate ice
  • MIR (Millimeter-wave Imaging Radiometer): Worked well
  • SSFR (Solar Spectral Flux Radiometer): Worked well

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Flight 98-064

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Sample Imagery
Click image for full resolution
Track #7
Alaska / 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 #8
Alaska / Arctic Ocean
Click to load the full resolution image Flight Direction Indicator
R: 2.13µm
G: 0.95µm
B: 0.65µm