Disclaimer: This material is being kept online for historical purposes. Though accurate at the time of publication, it is no longer being updated. The page may contain broken links or outdated information, and parts may not function in current web browsers. Visit https://espo.nasa.gov for information about our current projects.


HU-25C Guardian 10/18/15

Download PDF
Flight Number: 
OIB2015 Arctic Southeast Coastal B
Payload Configuration: 
Nav Data Collected: 
Total Flight Time: 
4.1 hours
Flight Segments: 
Start:10/18/15 14:00 Z Finish:10/18/15 18:06 Z
Flight Time:4.1 hours
Log Number:16F002PI:John Woods
Funding Source:Thomas Wagner - NASA - SMD - ESD Cryospheric Science
Purpose of Flight:Science
Comments:Weather cleared in Greenland today so OIB had the airfield open for Sunday ops and completed the Southeast Coastal B mission. Next flight scheduled for tomorrow, Monday, Oct 19.
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 10/18/15 Science Report

Mission Summary: 

Mission: Falcon Southeast Coastal B (priority: medium)

This mission is one of two (along with Southeast Coastal A) which are designed primarily to refly the “Southeast Coastal” mission from Spring 2015. These two flights work together in an interlaced (working upward from the coast) manner. This particular flight concentrates on the second and fourth lowest of the coast-parallel lines. We also refly a pair of IceSat-1 lines focused on the far southeastern lobe of the Greenland Ice Sheet, last flown in 2014.

Today was the first day of the last five with weather remotely suitable for flying an optical remote sensing mission anywhere in the southern half of Greenland.  The Icelandic low pressure system had moved far enough north this morning to promote katabatic outflow along Greenland's southeast coast, a classic clear weather-maker for this normally cloudy area.  It is also a perfect setup for heavy turbulence in the deep glacier canyons there, because of the interaction of the strong katabatic winds with the rough terrain there.  We have been "beaten up" in those canyons, flying low in prior campaigns, in precisely this synoptic situation.  So today was one of the few times where flying high actually gave us more flexibility in dealing with poor weather.  We would not have flown into areas with such potentially dangerous turbulence today, if we were flying low.  We flew the entire mission at 31,000' MSL and enjoyed a perfectly smooth ride.  We did encounter a few minutes of stratus cloud west of the ice divide during our transits to and from Kangerlussuaq, which resulted in minor loss of science data there.  In the far south end of Greenland we encountered scattered to broken cirrus clouds, which also resulted in the sporadic loss of science data along the two IceSat-1 lines in that area.  All in all we estimate successful data acquisition occurred across 95% of the flightline.

All instruments performed well today.

We did not conduct a ramp pass today.

Data volumes:
DMS: 25.9 Gb
Narrow Swath ATM: 21 Gb
FLIR: 2.0 Gb

total data collection time: 3.8 hrs


Map of Falcon - Southeast Coastal B

Jupiter and Venus over Raven's Cliff