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HU-25C Guardian 10/21/15

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Flight Number: 
OIB2015 Arctic K-EGIG-Summit
Payload Configuration: 
Nav Data Collected: 
Total Flight Time: 
3.7 hours
Flight Segments: 
Start:10/21/15 14:30 Z Finish:10/21/15 18:12 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 Falcon completed the K-EGIG-Summit mission out of Kangerlussuaq today. Tentative plan is for a short mop-up science mission tomorrow morning(October 22) and weather permitting commence the transit back to the US in the afternoon.
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 10/21/15 Science Report

Mission Summary: 

Mission: Falcon K-EGIG-Summit (priority: high)

This mission is a shortened version of the baseline-priority “K-EGIG-Summit” flight last flown in Spring 2015.  This version retains the three upper IceSat-1 lines in the upper Jakobshavn catchment area, the western half of the EGIG line, and the overflights of the K-Transect sites near Kangerlussuaq, but eliminates the eastern portion of the EGIG line and the IceSat-1 and IceSat-2 cal/val lines near Summit Station.

Weather has been a problem for this high-priority flight since we arrived in Kangerlussuaq two weeks ago.  A stubborn low to mid-level stratus deck has straddled Greenland's central ice divide for that entire period of time, making it impossible for our optical sensors to see the surface here.  However, our two most-trusted weather models (ECMWF and GFS) predicted that this cloud deck would retreat north overnight last night and during the morning today.  This morning as we perused the infrared weather satellite images collected overnight, we saw that this was exactly what was actually happening.  For these stubborn clouds to finally dissolve on the morning of our last full day of flight operations brought to mind the Biblical story of the parting of the Red Sea (admittedly stretching a metaphor well past its breaking point).  Happily we did not have an Egyption army in hot pursuit of us, but we did enjoy clear skies and a smooth ride throughout this flight.  We believe that we achieved 100% successful data collection for the mission.

All instruments performed well.

We conducted a ramp pass at 5000' MSL just prior to landing.

Data volumes:
DMS: 23.3 Gb
Narrow Swath ATM: 19 Gb
FLIR: 1.9 Gb

total data collection time: 3.5 hrs


Map of Falcon - K-EGIG-Summit

Navigation display during K-Transect

Calving front of Jakobshavn Glacier