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HU-25C Guardian 10/08/15

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Flight Number: 
OIB2015 Arctic Thomas-Jakobshavn 01
Payload Configuration: 
Nav Data Collected: 
Total Flight Time: 
3.7 hours
Flight Segments: 
Start:10/08/15 15:20 Z Finish:10/08/15 19:02 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 HU-25 flew a second mission today - the Thomas-Jakobshavn 01 flight plan. The New York Times photographer flew on this mission. Next flight scheduled for Friday, October 9.
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 10/08/15 Science Report

Mission Summary: 

Mission: Falcon Thomas-Jakobshavn 01 (priority: high)

This mission is identical to the Thomas-Jakobshavn 01 mission flown in Spring 2015, but shortened by eliminating the portions of that flight devoted to the dense 10-km grid on lower Jakobshavn Glacier. It continues an IceBridge time series flown along this IceSat-1 grid every spring from 2009 to 2015.

The weather for this flight was excellent for the most part, with low-level outflow in the Jakobshavn basin creating a widespread descending air mass throughout most of the area.  However the eastern portion of the sector was influenced by a mid-level stratus deck, which in turn was associated with a low-pressure system east of Greenland's dividing ridge.  This stratus was unusual in that it "spilled over" the ice divide from east to west, and retained enough of its moisture, even as its air mass sped downhill and warmed west of the divide, to remain condensed as thin cloud for a time.  This situation seems to lead to quickly-changing "streamers" of stratus cloud which come and go much faster than most other cloud masses.  The result today was that we anticipated losing portions of the southeastern-most lines to the stratus, but instead lost portions of the east-central and northeastern sectors.  The location of the stratus "streamers" had changed abruptly from the time of the last satellite image available before we launched.  All in all, we estimate that we achieved successful data collection along 80% of the flightlines, with almost all of the lost data occurring on the two easternmost lines.

All instruments performed well during the flight. 

We conducted a ramp pass at 15,000' MSL.

Data volumes:
DMS: 20.9 Gb
Narrow Swath ATM: 21 Gb
FLIR: 1.9 Gb

total data collection time: 3.5 hrs


Map of Falcon - Thomas-Jakobshavn 01

DMS mosaic of Jakobshavn Glacier