ORACLES - P-3 Orion - WFF 10/17/18 Science Report

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Date: 
Wednesday, October 17, 2018
Mission: 
ORACLES
Mission Location: 
São Tomé
Mission Summary: 

This was a Target of Opportunity flight aimed at sampling younger aerosol off the coast of Angola. The first priority was intensive in-situ aerosol sampling; if possible, the hope was to also get a radiation wall / square spiral out of it for SSFR/4STAR retrieval of spectral absorption and single scatter albedo. The flight plan, which we largely followed, was to transit south on 7E to 7S; then go east-bound to 10.5E. There, do the radiation wall along a north-south line ~7.0-7.6E. Then transit from 7S, 10.5E west to 7S, 5E and transit back to STM on 5E, with some in-situ sampling along the way if time/fuel permits. 
We encountered significant mid-level clouds on the south- and east- bound transit legs to the work area, requiring us to adjust alitude frequently to keep below the mid-level clouds (thereby allowing for HSRL retrievals). When we arrived at the work area there were still mid-level clouds, so we changed the usual order of the radiation wall and instead stepped down from high altitude, doing in-situ aerosol legs on the way down; then did the below-cloud, in-cloud and above-cloud legs before doing a square spiral back up to altitude. Unfortunately mid-level clouds interfered with the square spiral SSFR/4STAR measurements. We were able to do some more in-situ sampling on the leg back to STM on 5E.
This flight was most notable for the extremely high concentrations of aerosol on the 7-7.6S, 10.5E line at ~5-7,000' altitude. This was the most concentrated aerosol seen yet in ORACLES. In addition, based on preliminary in-flight observations, it was younger than other aerosol sampled during ORACLES.

Related Flight Report: 

P-3 Orion - WFF 10/17/18

Flight Number: 
ORACLES Science Flight #10
Payload Configuration: 
ORACLES
Nav Data Collected: 
No
Total Flight Time: 
8.5 hours
Archive Data: 
20181017 (119 binary files; 24 archive (plain-text) files; 39 image files)
Flight Segments: 
From:FPSTTo:FPST
Start:10/17/18 07:45 Z Finish:10/17/18 16:15 Z
Flight Time:8.5 hours
Log Number:19P018PI:Jens Redemann
Funding Source:Hal Maring - NASA - SMD - ESD Radiation Science Program
Purpose of Flight:Science
Miles Flown:2000 miles
Flight Hour Summary: 
18P00419P018
Flight Hours Approved in SOFRS188.5
Flight Hours Previously Approved 144
Total Used44.5110
Total Remaining 34
19P018 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
10/02/18ORACLES Science Flight #3Science8.58.5135.51940
10/03/18ORACLES Science Flight #4Science8.5171271970
10/05/18ORACLES Science Flight #5Science9261182000
10/07/18ORACLES Science Flight #6Science8.434.4109.62000
10/10/18ORACLES Science Flight #7Science8.342.7101.31970
10/12/18ORACLES Science Flight #8Science5.34896800
10/15/18ORACLES Science Flight #9Science7.855.888.21700
10/17/18ORACLES Science Flight #10Science8.564.379.72000
10/19/18ORACLES Science Flight #11Science872.371.71800
10/21/18ORACLES Science Flight #12Science8.280.563.51800
10/23/18ORACLES Science Flight #13Science8.188.655.41800
10/25/18ORACLES Transit #1Transit7.896.447.62009
10/26/18ORACLES Transit #2Transit7103.440.62100
10/27/18ORACLES Transit #3Transit5.8109.234.81692
10/27/18ORACLES Transit #4Transit0.81103472
18P004 Flight Reports
Date Flt # Purpose of Flight Duration Running Total Hours Remaining Miles Flown
09/17/18ORACLES ATFCheck1.31.3187.20
09/19/18ORACLES PTFCheck3.75183.50
09/21/18ORACLES Transit #1Transit6.311.3177.21716
09/22/18ORACLES Transit #2Transit8.219.51692131
09/24/18ORACLES Transit #3/Science FlightTransit9.328.8159.72500
09/27/18ORACLES Science Flight #1Science836.8151.71875
09/30/18ORACLES Science Flight #2Science7.744.51442400

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.