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HU-25C Guardian 09/30/15

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Flight Number: 
OIB2015 Arctic North Central Gap 01
Payload Configuration: 
Nav Data Collected: 
Total Flight Time: 
3.9 hours
Flight Segments: 
Start:09/30/15 11:25 Z Finish:09/30/15 15:17 Z
Flight Time:3.9 hours
Log Number:15F005PI:John Woods
Funding Source:Thomas Wagner - NASA - SMD - ESD Cryospheric Science
Purpose of Flight:Science
Comments:OIB completed the North Central Gap 01 mission out of Thule today. The aircraft has turned and is currently on it's second mission for today. Weather at Thule is expected to get worse later this afternoon. Weather forecast late this evening/early am tomorrow will determine if we are able to fly another data flight tomorrow.
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 09/30/15 Science Report

Mission Summary: 

Mission: Falcon North-Central Gap 01 (priority: high)

This mission is a shortened version of the Spring 2015 mission of the same name.  The primary difference is that we reduced the number of grid lines crossing the upper Zachariae and 79N Glaciers from six to two.

Weather today was quite poor again, with northwestern Greenland completely obscured by clouds associated with a low-pressure system which came ashore overnight from Baffin Bay.  A more powerful low-pressure system is forecast to approach the area during the day today and overnight, and it is likely that this system will close the Thule airport for at least portions of the next two days.  Thus today may be our last flight opportunity until Monday.  Fortunately, strong offshore flow and clear skies prevailed over much of northeast Greenland, so we selected this high-priority flight for this morning.

All instruments performed well today.  The cloudiness across northwestern Greenland prevented our instruments from collecting more than isolated data between Thule and the main ridgeline of the ice sheet, but we successfully collected data for all but a small portion of the eastern half of the flightline.  An isolated patch of cirrus cloud partially obscured our north-south grid lines over the upper Zachariae and 79N Glaciers, but we were able to obtain permission from controllers to descend to 31,000', which placed us beneath the cirrus, and thus we lost only a small southern portion of the western grid line to this diabolically-located cloud.  We flew the outbound transit at 35,000' MSL, and the inbound leg at 38,000' MSL, and observed good performance from all sensors at all three altitudes, when clear skies were underneath.

We conducted a ramp pass at 2000' MSL.

Data volumes:
DMS: 15.0 Gb
Narrow Swath ATM: 26 Gb
FLIR: 1.5 Gb

total data collection time: 3.6 hrs