Gulfstream V - JSC 09/13/19

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Flight Number: 
GV-45
Payload Configuration: 
OIB
Nav Data Collected: 
No
Total Flight Time: 
5.8 hours
Flight Segments: 
From:BGTLTo:BGTL
Start:09/13/19 12:02 Z Finish:09/13/19 17:51 Z
Flight Time:5.8 hours
Log Number:195004PI:Joseph MacGregor
Funding Source:Bruce Tagg - NASA - SMD - ESD Airborne Science Program
Purpose of Flight:Science
Miles Flown:2500 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 09/13/19 Science Report

Mission: 
OIB Summer 2019
Mission Summary: 

[operational_instruments]

ATM

Narrow Swath ATM

FLIR
CAMBOT

Snow Radar

[/operational_instruments]

OUTLOOK FOR TOMORROW: The Arctic Ocean once again looks like it will be low cloud covered, so not likely for a sea ice mission. We still have some land ice mission possibilities for our last flight of the campaign that appear viable with current weather forecasts.
 
Mission: West-Lagrange + IS-2/North Glaciers
Priority: Medium
 
The medium-priority sea ice mission Lagrangian Racetrack West is designed to measure the same sea ice that we originally measured in our Arctic Spring 2019 campaign on April X onboard the P-3. However, sea ice is constantly in motion, drifting with the ocean currents and forced by the atmosphere from the winds. So in order to measure the same ice that OIB has previously measured the sea ice in the original mission was lagrangian tracked throughout the summer. This is done using passive microwave data drift products taken from NSIDC. The sea ice is now located north of Ellef Ringnes Island in the Canadian Archipelago. OIB will fly a lawn-mower type grid pattern which is curved due to the ice drift. The science goal of this mission is to fly over the same sea ice in order to monitor melt and changes to the snow pack on top of sea ice and the sea ice freeboard throughout the summer melt season.  
 
Based on the satellite images that we had available and several forecasts we believed that conditions would be clear and that was our reasoning for picking this mission today. However, once we arrived at location we were met with complete cover of low clouds (cloud tops ~ 2000 ft). We completed one line of this mission down and back then decided to transit to northwest Greenland to collect some data along the IS-2/North Glaciers modified land ice mission. Thankfully the range and speed of the G-V aircraft allowed for us to change our mission on the fly and we were able to salvage this flight.
 
The North Glaciers -01 medium-priority land ice mission has been modified and renamed IS-2/North Glaciers with the eastern portion of the original mission removed and included a few low-latency IS-2 ground tracks. Over this area of the ice sheet there were some high cirrus clouds but otherwise conditions were clear allowing for optimal data collection. Some lower clouds were present towards the coasts, but we were able to remain under them for the majority of the time.
 
On the Sea Ice-West Lagrange portion of this mission, ATM was unable to penetrate through the clouds, however snow radar was able to collect data. This is important because snow thickness can likely be determined from the echograms and compared with those from the spring.
 
All instruments preformed well today.
 
ICESat-2 RGT latencies (+/- indicates OIB surveyed after/before ICESat-2):
IS-2/North Glaciers:
1200 (-24 hours)
1215 (-47 hours)
 
Data volumes collected during today’s mission, which consisted of 2.4 hours of data collection:
ATM:  38 Gb
CAMBOT:  97 Gb
FLIR: 7  Gb
Narrow Swath ATM:   53 Gb green
Narrow Swath ATM:  48 Gb IR
VNIR:  30 Gb
SWIR:  41 Gb
Snow Radar:  0.62 Tb