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ER-2 Flight: 97044

Date: February 2, 1997

Mission: Underfly ADEOS, overfly ground sites under clear sky conditions.

Mission Objectives

Collect data for cross-calirbration of ADEOS instruments. Pass over Park Falls, Trout Lake, and Lake Winnebago ground sites on the way to the Bondville, IL ground site for figure-8 patterns centered over the AERI. Overflight of SSEC instrumentation at end of flight.

Flight Summary

Take off at 1600 UTC. ER-2 landed at MSN at 2125 UTC.

ER-2 left Madison and set up for an underflight of ADEOS (1710 UTC overpass). Complete undercast during underflight of ADEOS. Some thin cirrus (clear below) during 1719 to 1721 UTC. Lake Superior was total overcast except at the northern end where some lake ice was observed (approximate time, 1905 UTC). Overcast conditions at Park Falls, Trout Lake and Lake Winnebago during overpass. Figure-8s flown over AERI at Bondville with overpasses at 1954, 2001, 2007, and 2014 UTC. Pattern over Bondville was shortened due to stratus clouds moving in from the northwest. Clear-sky conditions during Madison overpasses at 2045 and 2052 UTC. All ground instrumentation operative during SSEC overpass.

Highlights

ER-2 did 4 overpasses of Bondville ground-based instrumentation with various sky conditions, ranging from clear to thin cloud overcast. ADEOS underflight with uniform cloud below.

Instrument Status

Modis Airborne Simulator (MAS): Operated, data collected. Port 4 down at 1910UTC.
Cloud Lidar System (CLS): Operated, data collected.
High-Resolution Interferometer Sounder (HIS): Operated, data collected.
Millimeter-wave Imaging Radiometer (MIR): Operated in stare mode, data collected.
Tilt Scan CCD Camera (TSCC): Not flown this mission.
RC-10 Camera: Operated over clear scenes (black and white - 6 inch lens). Data OK.

Additional Pilot Notes:. Clear conditions during both overpasses of SSEC (2045 and 2052 UTC). Still some strong winds at altitude. Cloud conditions during overpass of Bondville: 1953-1955 dissipating low stratus with thin cirrus; 2000-2001 clearing; 2006-2008 light to moderate haze and light chop; 2013-2015 moderate haze with clouds moving in from the north.