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HU-25C Guardian 10/06/15

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Flight Number: 
OIB2015 Arctic Ice-Sat2 North
Payload Configuration: 
Nav Data Collected: 
Total Flight Time: 
4 hours
Flight Segments: 
Start:10/06/15 11:11 Z Finish:10/06/15 15:10 Z
Flight Time:4 hours
Log Number:16F002PI:John Woods
Funding Source:Thomas Wagner - NASA - SMD - ESD Cryospheric Science
Purpose of Flight:Science
Comments:OIB completed its last science mission out of Thule on the HU-25 for this deployment today - the Ice-Sat2 North science mission. Weather was not favorable in areas of interest to do a second flight today. The team will pack up this evening. Tomorrow is a transit day to Kangerlussuaq for the second portion of this Melt Season data collection deployment.
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 10/06/15 Science Report

Mission Summary: 

Mission: Falcon IceSat-2 North (priority: high)

This mission is designed to overfly planned IceSat-2 ground tracks over a wide range of ice regimes near Thule. We center some of the flightlines on each of three beam pairs (left, nadir and right) in turn, sampling at least one of each beam pair during this mission. The east-west crossing line is designed to capture as many ascending/descending crossovers as possible. We also fly a particular flowline of Petermann Glacier which has been sampled intermittently during the ATM and OIB eras, overflying two GCNet sites in the process. This mission is identical to the mission flown in Spring 2015, except that the uppermost/easternmost two lines have been removed.

Weather was not ideal for this mission today, with a compact low-pressure system in Melville Bay creating low cloudiness (due to orographic uplift along the steeply rising ice sheet margin) near the southern ends of this mission's data lines.  The northern section of the flight was partly covered in cirrus clouds, and these clouds made it impossible to judge whether the skies beneath them were clear from satellite imagery.  However we were confident we would successfully acquire data for much of the flight, including the majority of the IceSat-2 groundtracks, and since today was our last chance to fly in Thule before moving to Kangerlussuaq tomorrow, we chose to fly.  We selected an altitude of 29,000' MSL to give us a chance to work below the cirrus clouds, but this turned out to be unnecessary because most of the cirrus had dissipated by the time we got there.  However the cirrus had indeed hidden some thin low clouds over the lower portion of Petermann Glacier, and we obtained very little data there.  We also lost a small amount of data over the northernmost portion of Humboldt Glacier, due to low clouds encroaching from the nearby water.  In total, we estimate that we successfully obtained data from all three instruments over 85% of the flight line.

All instruments performed well today.

We conducted a ramp pass at 20,000' MSL.

Data volumes:
DMS: 13.2 Gb
Narrow Swath ATM: 22 Gb
FLIR: 2.0 Gb

total data collection time: 3.7 hrs


Map of Falcon - IceSat 2 North

Weather satellite image from this morning

Margin of Petermann Glacier