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HU-25C Guardian 10/19/15

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Flight Number: 
OIB2015 Arctic Helheim-Kangerdlugussuaq
Payload Configuration: 
Nav Data Collected: 
Total Flight Time: 
3.7 hours
Flight Segments: 
Start:10/19/15 10:15 Z Finish:10/19/15 13:56 Z
Flight Time:3.7 hours
Log Number:16F002PI:John Woods
Funding Source:Thomas Wagner - NASA - SMD - ESD Cryospheric Science
Purpose of Flight:Science
Comments:OIB completed the Helheim-Kangerdlugussuaq mission this morning. Turning aircraft for an afternoon sortie.
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 10/19/15 Science Report

Mission Summary: 

Mission: Falcon Helheim-Kangerdlugssuaq (priority: high)

This mission is based on the Helheim-Kangerdlugssuaq mission last flown in Spring 2015.  It has been shortened by removing all of the glacier centerlines from the area east of Sermilik fjord (including Midgard, Fenris, Glacier de France, and several others) and also the centerlines of two additional glaciers just south of Kangerdlugssuaq Glacier.  Even with so many centerlines removed, the centerlines of Helheim and Kangerdlugssuaq Glaciers in this flight remain something of an experiment, because we are flying them at high altitude for the first time.  Small aircraft roll angles, which are necessary to follow the sinuous centerlines, translate to large displacements of the laser and DMS swaths on the ground from high altitude (considering the long "lever arm" involved), and we are unsure of how accurately we can place the swaths on the centerline as a result.  Our initial impression from real-time navigation displays today leads us to believe that we achieved fairly good coverage along these challenging science targets.  Post-flight data processing over the coming weeks will answer the question more conclusively.

Weather today was almost ideal for this flight, with "severe clear" skies almost everywhere across south-central Greenland.  We encountered a broken stratus deck within approximately 120 km of Kangerlussuaq, but beautiful clear skies everywhere else.  We estimate successful data collection across more than 98% of the mission.

All instruments performed well today.

We conducted a ramp pass at 8000' MSL just prior to landing.

Data volumes:
DMS: 23.1 Gb
Narrow Swath ATM: 20 Gb
FLIR: 1.8 Gb

total data collection time: 3.5 hrs


Map of Falcon - Helheim-Kangerdlugssuaq

Abandoned DYE-2 radar station.

Helheim Glacier calving front