Summary Information Date: May 20-21, 1998 ER-2 Flight Number: 98-065 Location: Fairbanks,Alaska to Arctic Ocean Principal Investigator: Dr. Michael King (NASA GSFC) Additional Sensors: AirMISR, AMPR, CLS, HIS, MIR, SSFR (see Instrument Status, below) Level-1B Processing Information Level-1B Data Version: #02 Calibration Type: Final Calibration Version: FIRE-ACE_Ames 1.0 Details: Configuration and Calibration Temperature Adjustment: No Status: Processed with Final Calibration

Flight Track Map

Level-0 Data Quality
Evaluation Report

Level-1B HDF Data Distribution Point
Order Form (NASA LaRC Atmospheric Sciences Data Center)

ER-2 Flight Log Author: Dr. Michael King Mission Scientist: Dr. Michael King ER-2 Pilot: Ken Broda Takeoff: 20May1998 1905 UTC Landing: 21May1998 0135 UTC Flight Duration: 6:30 Objective: The objective of this mission was to fly the ER-2 repeatedly over the surface site at Barrow (71°19.37’N, 156°34.9’W), coordinated with the University of Washington CV-580, followed by a flight to the SHEBA ice station (76°20.31’N, 166°37.45’W) and finally to a flight track parallel to the NOAA-14 ground track. Coordinations: The mission was coordinated with the CV-580 between 2009 and 2202 UTC, with the ER-2 flying flight legs between single level Arctic stratus clouds over the tundra south of Barrow, to broken clouds over the ARM site, to clear sky over the ice. The entire flight track over the Chukchi and Beaufort Seas was cloud free. Other coordinations included: F-14 satellite (2121 and 2301 UTC) NOAA-14 satellite (2326 UTC) Solar noon (2301 UTC) Key Flight Legs: The ER-2 flew a NNE flight line from point 1 (70°17’N, 158°W) to point 2 (72°40’N, 155°W), overflying the ARM site each time, that consisted of 5 flight legs 285 km in length. Following this coordinated pattern with the CV-580, the ER-2 flew a NW flight track to point 4 (74°N, 166°37.45’W), where it turned and headed north to point 6 (77°N, 166°37.45’W), consisting of a single flight leg 333 km in length. This flight track passed over the SHEBA ice station at: 2303 UTC Finally, the ER-2 headed SSE on a heading of 143.76°, aligned with the NOAA-14 overpass at 2326 UTC. The AirMISR was turned on for four acquisitions over the Barrow ARM site, one over the SHEBA ice station, and one at the time of the NOAA-14 overpass. The AirMISR operated at the following times: 2011-2025 UTC (ARM) 2043.75-2058 UTC (ARM) 2112.75-2125 UTC (ARM) 2145.75-2200 UTC (ARM) 2256-2308 UTC (SHEBA) 2320-2328 UTC (NOAA-14) Pilot Report: The ER-2 pilot reported undercast conditions over all of Alaska en route to and from Barrow, with thick Arctic stratus clouds on the south side of Barrow, with clear sky over the ice. Meteorology: A single layer cloud system occurred near and to the south of Barrow, with severe clear over the Beaufort Sea. A high pressure system was located just NE of the SHEBA ice station, with low stratus to the NE. This cloud was moving toward the west, but did not move over the SHEBA ice camp at any time during the mission. Instrument Status: AirMISR (Airborne Multi-angle Imaging Spectroradiometer): The first two scenes collected 5 of 9 look angles (nadir and the last 3 aft view angles not recorded); subsequent acquisitions obtained all 9 look angles until the SHEBA acquisition when the data collection was truncated; final data collection sequence during the NOAA-14 overpass was not acquired AMPR (Advanced Microwave Precipitation Radiometer): Worked well CLS (Cloud Lidar System): Worked well 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 (8.3-14.0 µm) disconnected for nitrogen purge MIR (Millimeter-wave Imaging Radiometer): Worked well SSFR (Solar Spectral Flux Radiometer): Worked well