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HU-25C Guardian 10/05/15

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Flight Number: 
OIB2015 Arctic Sea Ice Central
Payload Configuration: 
Nav Data Collected: 
Total Flight Time: 
3.6 hours
Flight Segments: 
Start:10/05/15 11:01 Z Finish:10/05/15 14:35 Z
Flight Time:3.6 hours
Log Number:16F002PI:John Woods
Funding Source:Thomas Wagner - NASA - SMD - ESD Cryospheric Science
Purpose of Flight:Science
Comments:After being on the ground for a few days due to weather conditions and no weekend flying in Thule, OIB completed the Sea Ice Central Mission this morning. Afternoon data flight already launched.
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 Central (priority: high)

This mission is a near-repeat of the eastern “bunny ear” of the Zigzag West flight last flown in spring 2015. We intended to replace the eastern line with a near-contemporaneous CryoSat-2 groundtrack, but none occurred within our operating hours so we instead conducted an exact repeat of our spring 2015 CryoSat-2 line. Finally we modified the westernmost line to overfly a segment of a SIMPL flight from their August 2015 campaign.

Weather improved considerably today, with clear skies prevailing all across northwest Greenland.  Our sea ice targets farther to the north had also improved considerably, although our morning satellite images still showed considerable low cloudiness across the Lincoln Sea.  However our weather models also indicated the presence of steady low-level offshore winds from Greenland's north coast, and this drying air mass could reasonably be expected to dissipate some of the clouds in the Lincoln Sea.  This indeed turned out to be the case - the conditions we encountered were better than the earlier satellite imagery indicated.  We still encountered low clouds at several points along the sea ice transect route, but we estimate that they only obscured 15% of the line from our science instruments, most of that along the northernmost sector.

All instruments performed well today, from 34,000' MSL for the entire science portion of the flight.  The sun was slightly below the horizon at the sea ice surface for much of the science line, but DMS appeared to capture useable imagery despite these poor photographic conditions.

We conducted a ramp pass at 10,000' MSL.

Data volumes:
DMS: 12.0 Gb
Narrow Swath ATM: 19 Gb
FLIR: 2.0 Gb

total data collection time: 3.3 hrs


Map of Falcon Sea Ice Central

Petermann Glacier's remnant ice shelf