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HU-25C Guardian 10/05/15

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Flight Number: 
OIB2015 Arctic Sea Ice East
Payload Configuration: 
Nav Data Collected: 
Total Flight Time: 
3.8 hours
Flight Segments: 
Start:10/05/15 15:50 Z Finish:10/05/15 19:37 Z
Flight Time:3.8 hours
Log Number:16F002PI:John Woods
Funding Source:Thomas Wagner - NASA - SMD - ESD Cryospheric Science
Purpose of Flight:Science
Comments:OIB completed a second sea ice flight this afternoon out of Thule, Greenland. This was the Sea Ice East Mission. Next flight scheduled for tomorrow, Tuesday, October 6th, weather permitting.
Flight Hour Summary: 
Flight Hours Approved in SOFRS100
Flight Hours Previously Approved 67.4
Total Used32.665.3
Total Remaining 2.1
16F002 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
10/05/15OIB2015 Arctic Sea Ice CentralScience3.63.663.8
10/05/15OIB2015 Arctic Sea Ice EastScience3.87.460
10/06/15OIB2015 Arctic Ice-Sat2 NorthScience411.456
10/07/15OIB2015 Arctic Transit Thule to KangerlussuaqTransit213.454
10/08/15OIB2015 Arctic Southwest Coastal AScience3.817.250.2
10/08/15OIB2015 Arctic Thomas-Jakobshavn 01Science3.720.946.5
10/09/15OIB2015 Arctic Umanaq BScience3.924.842.6
10/13/15OIB2015 Arctic Jakobshavn Eqip StoreScience2.927.739.7
10/13/15OIB2015 Arctic Southeast Coastal AScience3.631.336.1
10/18/15OIB2015 Arctic Southeast Coastal BScience4.135.432
10/19/15OIB2015 Arctic Helheim-KangerdlugussuaqScience3.739.128.3
10/19/15OIB2015 Arctic Helheim-Kangerdlugussuaq Gap BScience3.94324.4
10/20/15OIB2015 Arctic Jakobshavn Mop-UpScience3.746.720.7
10/20/15OIB2015 Arctic Southwest Coastal BScience3.750.417
10/21/15OIB2015 Arctic Southwest Coastal CScience3.453.813.6
10/21/15OIB2015 Arctic K-EGIG-SummitScience3.757.59.9
10/22/15OIB2015 Arctic Mopup SouthScience259.57.9
10/22/15OIB2015 Arctic Ferry BGSF-CYYRFerry2.261.75.7
10/23/15OIB2015 Arctic Ferry CYYR-KRICFerry3.3652.4
10/23/15OIB2015 Arctic Ferry CYYR-KRICFerry0.365.32.1
15F005 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
09/15/15OIB #1Check2.72.797.3
09/20/15OIB #2, 3, 4Ferry2.75.494.6
09/21/15OIB #2, 3, 4Ferry2.37.792.3
09/21/15OIB #2, 3, 4Ferry29.790.3
09/23/15OIB2015 Arctic North Central Gap 02Science3.913.686.4
09/24/15OIB2015 Arctic Northwest Coastal AScience3.717.382.7
09/25/15OIB2015 Arctic Northwest Coastal BScience3.821.178.9
09/28/15OIB2015 Arctic Sea Ice WestScience3.724.875.2
09/30/15OIB2015 Arctic North Central Gap 01Science3.928.771.3
09/30/15OIB2015 Arctic Zachariae-79NScience3.932.667.4

Flight Reports began being entered into this system as of 2012 flights. If there were flights flown under an earlier log number the flight reports are not available online.

Related Science Report: 

OIB - HU-25C Guardian 10/05/15 Science Report

Mission Summary: 

Mission: Falcon Sea Ice East (priority: high)

This flight is based on the western “bunny ear” of the spring 2015 “ZigZag East” mission, with the flight line adjusted slightly to improve coverage over what may be some unusually young and thin ice east of Cape Morris Jessup. The portion of this flight running through the northern Nares Strait is coincident with a SIMPL flight line from their August 2015 campaign.  We also underfly a contemporaneous CryoSat-2 orbit at the far eastern end of the flightline, near Cape Morris Jessup.

Weather over the eastern Lincoln Sea continued to improve during the day today, as the south wind descending from northern Greenland's ice sheet dried the air mass and dissolved the low clouds observed in the morning satellite image.  We encountered some haze throughout the flight and a few minutes of low-level stratus at the northeastern apex of the flightline, but otherwise had no problems with visibility to the surface.  We successfully obtained data over at least 95% of the flight line.

All instruments performed well during the flight.  Since we flew north and east during Thule's afternoon period, we again flew away from the sun and encountered sun elevations below the horizon at the eastern sector of the flight line.  This was unavoidable since we needed to time this flight to coincide with the CryoSat-2 overpass.  DMS captured useable imagery even at the lowest sun angles, however.

The CryoSat-2 spacecraft flew directly over us, overtaking us from behind, at 17:39:48z, on orbit #29114 (and between our waypoints 29114C and 29114D).  We timed our entire suite of activities today to coincide with this event, and it worked out perfectly.

We conducted a ramp pass at 5000' MSL.

Data volumes:
DMS: 14.0 Gb
Narrow Swath ATM: 21 Gb
FLIR: 1.9 Gb

total data collection time: 3.6 hrs


Map of Falcon - Sea Ice East

FLIR image of sea ice in Nares Strait