Gulfstream V - JSC 09/09/19

Download PDF
Flight Number: 
GV-41
Payload Configuration: 
OIB
Nav Data Collected: 
No
Total Flight Time: 
6.4 hours
Flight Segments: 
From:BGTLTo:BGTL
Start:09/09/19 11:30 Z Finish:09/09/19 17:55 Z
Flight Time:6.4 hours
Log Number:195004PI:Joseph MacGregor
Funding Source:Bruce Tagg - NASA - SMD - ESD Airborne Science Program
Purpose of Flight:Science
Miles Flown:2800 miles
Flight Hour Summary: 
195004
Flight Hours Approved in SOFRS120
Total Used83.8
Total Remaining36.2
195004 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
08/19/19GV-34Science3.83.8116.21700
08/21/19GV-35Transit0.64.4115.6300
09/03/19GV-36Transit6.510.9109.12800
09/04/19GV-37Science6.717.6102.42900
09/05/19GV-38Science6.724.395.72900
09/06/19GV-39Science6.630.989.12900
09/07/19GV-40Science6.137832700
09/09/19GV-41Science6.443.476.62800
09/10/19GV-42Science6.850.269.83000
09/11/19GV-43Science6.957.162.93000
09/12/19GV-44Science7.164.255.83100
09/13/19GV-45Science5.870502500
09/14/19GV-46Science7.277.242.83100
09/15/19GV-47Transit6.683.836.22900

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 Summer 2019 - Gulfstream V - JSC 09/09/19 Science Report

Mission: 
OIB Summer 2019
Mission Summary: 

[operational_instruments]
ATM
Narrow Swath ATM
FLIR
CAMBOT
Snow Radar
[/operational_instruments]

Flight Report 09/09/19
 
OUTLOOK FOR TOMORROW: There appear to be more low clouds moving into north central and northeast Greenland tomorrow from a low-pressure system just off the eastern coast of Greenland, bringing clouds and moisture onto the ice sheet. There might be another small break in the clouds in the Lincoln Sea farther west than today’s mission which might be viable, or a couple of land ice missions south of Thule along the coasts.
 
Mission: Racetrack West
Priority: High
 
This high-priority mission is the first sea ice mission of the Arctic 2019 summer campaign. This mission is designed to sample sea ice and its location depends on an ICESat-2 ground track where the satellite passes over OIB while we are sampling the track giving us zero latency. Similar to sea ice missions from the 2019 Arctic spring campaign, this mission is a racetrack pattern, which allows for maximum coincidence between ATM and IS-2. We also fly at 3500 feet to increase our ATM swath so that even as the sea ice drifts and the uncertainties of the drift itself, we will still fly over the same ice that IS-2 flies over. This altitude is also within the range of snow radar, which is of importance because this is the first time snow radar has flown over the sea ice during the late summer, giving us new data of the snow thickness on sea ice at the beginning of the freezing season. This new information will help improve our sea ice thickness estimates produced from IS-2 freeboards during this time of year. Flying ATM at this time of year will also help to improve how we interpret our IS-2 returns during this season when melt ponds are prevalent and surface properties are also different compared to the spring.
 
During flight we encountered clear skies, only reaching low clouds just as we made our northern turn of the racetrack, causing us to lose no data collection time. Winds were around 2 knots at the southern edge of our line and around 27 knots at the northern end. Wind directions were also variable and because of this we did not perform a sea ice drift correction during this mission. The sea ice that we sampled was variable: large floes, lots of ridged ice, some floes had no snow on them, others a lot. There were lots of leads present and melt ponds on the floes were in various stages: normal melt, thin films of ice on top, beginning to freeze through. Melt ponds were more prevalent at the southern end of these lines. These conditions were ideal for what we wanted to encounter during this mission.
 
At 14:57:17 Z AVIRIS/IS-2 on the B200 and ICESat-2 overflew OIB; another instance during this campaign when this happened, previously occurring during the ICESat-2 North land ice campaign. This is also the first mission after the yaw flip maneuver done by ICESat-2 that occurred last weekend. This now gives us data collected coincident with IS-2 for both yaw orientations.
 
All instruments performed well and there were not issues on today’s mission, having 100% data collection.
 
ICESat-2 RGT latencies (+/- indicates OIB surveyed after/before ICESat-2):
1123 center and strong TEP beams (0)
 
Data volumes collected during today’s mission, which consisted of 3.3 hours of data collection:
ATM:  58 Gb
CAMBOT:  218 Gb
FLIR:  13 Gb
Narrow Swath ATM:   88 Gb green
Narrow Swath ATM:  81 Gb IR
VNIR:  36 Gb
SWIR:  54 Gb
Snow Radar:  0.70  Tb