OIB - P-3 Orion - WFF 04/20/19 Science Report

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Saturday, April 20, 2019
Mission Location: 
Nansen Gap
Mission Summary: 

Mission: Nansen Gap
Priority: Medium
This is a modified version of the Fram Gateway missions flown in the earlier years of IceBridge. It differs from them in that it transits to and from the area of the Fram Strait at high-altitude, leaving more time to sample ice farther north and east than in prior years. In addition to Level 1 Requirements SI1 and SI2, this mission addresses sea ice level 1 baseline requirements SI3c and d by sampling sea ice north of Fram Strait.
In the interest of acquiring additional sea ice over a greater swath of the Arctic Ocean, we opted for this mission, which was shortened slightly to accommodate airfield opening hours. An thin layer northwest of Svalbard that we could partly see through in satellite imagery gave us confidence that this mission was viable. Following an uneventful transit, we descended into clear conditions for the survey at 1,500 ft AGL. Because of a significant (>50 kt) tailwind during the transit to the survey, we realized that we would not underfly Sentinel-3A at zero latency, so we decided to switch the return Sentinel underpass to Sentinel-3B (updated KML from notice this morning attached). We performed that zero latency Sentinel-3B underflight on the return crossing of the Fram Strait, underflying it in clear conditions at 15:00:34 UTC. We were successfully able to survey beneath the layer we had seen in imagery, and several beluga whales and seals were briefly spotted. We briefly descended to 1,000 ft AGL to avoid some thin layers. Headwall SWIR was frozen for about the first hour again and once warmed up had to be rebooted every now and then. Snow radar worked well and MCoRDS was again operated in imaging mode over land ice at high altitude during transit We also recorded some short videos of our flight and a brief interview with Jeremy Harbeck for potential national broadcast this coming week. Because of time constraints associated with the airfield opening, we did not perform a ramp pass.
Attached images/files:

  1. Map of today’s mission (John Sonntag / NASA)
  2. Updated KML of today’s mission (John Sonntag / NASA)
  3. The cockpit during the survey (Jeremy Harbeck / NASA)
  4. Thin sea ice (nilas) finger rafting in a refreezing lead (Jeremy Harbeck / NASA)
  5. Pressure ridge keel of sea ice floe (Jeremy Harbeck / NASA)
  6. Cloud as evidence enhanced moisture flux over a lead (Jeremy Harbeck / NASA)

The cockpit during the survey

Thin sea ice (nilas) finger rafting in a refreezing lead

Pressure ridge keel of sea ice floe

Cloud as evidence enhanced moisture flux over a lead

Related Flight Report: 

P-3 Orion - WFF 04/19/19

Flight Number: 
#2091: 2019 OIB Science Flight #12
Payload Configuration: 
Operation IceBridge
Nav Data Collected: 
Total Flight Time: 
7.6 hours
Flight Segments: 
Start:04/19/19 10:50 Z Finish:04/19/19 18:28 Z
Flight Time:7.6 hours
Log Number:19P017PI:Joseph MacGregor
Funding Source:Bruce Tagg - NASA - SMD - ESD Airborne Science Program
Purpose of Flight:Science
Miles Flown:2104 miles
Flight Hour Summary: 
Flight Hours Approved in SOFRS250
Total Used216.3
Total Remaining33.7
19P017 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
03/26/19#2053: 2019 OIB ATFCheck0.90.9249.10
03/27/19#2059: 2019 OIB PTF-LaserCheck2.33.2246.80
03/28/19#2061: 2019 OIB PTF-RadarCheck3.26.4243.60
04/01/19#2068: 2019 OIB WFF-BGTL Transit FlightTransit6.913.3236.72458
04/03/19#2070: 2019 OIB Science Flight #1Science7.620.9229.11938
04/05/19#2072: 2019 OIB Science Flight #2Science7.728.6221.41910
04/06/19#2073: 2019 OIB Science Flight #3Science7.235.8214.22000
04/08/19#2075: 2019 OIB Science Flight #4Science6.942.7207.31780
04/09/19#2076: 2019 OIB Science Flight #5Science7.850.5199.52045
04/10/19#2081: 2019 OIB Science Flight #6Science10.160.6189.42702
04/11/19#2082: BGSF-BGTL TransitTransit2.262.8187.2696
04/12/19#2083: 2019 OIB Science Flight #7Science7.2701802109
04/15/19#2086: 2019 OIB Science Flight #8Science4.874.8175.21243
04/16/19#2087: 2019 OIB Science Flight #9Science7.682.4167.62036
04/17/19#2088: 2019 OIB Science Flight #10Science7.790.1159.91937
04/18/19#2090: 2019 OIB Science Flight #11Science7.897.9152.12008
04/19/19#2091: 2019 OIB Science Flight #12Science7.6105.5144.52104
04/20/19#2092: 2019 OIB Science Flight #13Science6.9112.4137.60
04/22/19#2094: 2019 OIB Science Flight #14Science6.61191311867
04/23/19#2099: 2019 OIB Science Flight #15Science7.7126.7123.31979
04/25/19#2102: 2019 OIB BGTL-KBGR Transit FlightTransit6.2132.9117.10
04/26/19 KBGR to BGSF TransitTransit5.7138.6111.40
05/05/192019 OIB Science Flight #16Science7.8146.4103.60
05/06/192019 OIB Science Flight #17Science8.4154.895.20
05/07/192019 OIB Science Flight #18Science8.5163.386.70
05/08/192019 OIB Science Flight #19Science8171.378.70
05/12/192019 OIB Science Flight #20Science9180.369.70
05/13/192019 OIB Science Flight #21Science7187.362.70
05/14/192019 OIB Science Flight #22Science7.9195.254.80
05/15/192019 OIB Science Flight #23Science8.3203.546.50
05/16/192019 OIB Science Flight #24Science6.3209.840.20
05/17/192019 OIB Transit Transit6.2216340
05/17/192019 OIB Transit Transit0.3216.333.70

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.

Flight Tracks: 
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