P-3 Orion - WFF 10/05/18
From: | FPST | To: | FPST | ||
---|---|---|---|---|---|
Start: | 10/05/18 04:55 Z | Finish: | 10/05/18 13:55 Z | ||
Flight Time: | 9 hours | ||||
Log Number: | 19P018 | PI: | Jens Redemann | ||
Funding Source: | Hal Maring - NASA - SMD - ESD Radiation Science Program | ||||
Purpose of Flight: | Science | ||||
Miles Flown: | 2000 miles |
18P004 | 19P018 | |
---|---|---|
Flight Hours Approved in SOFRS | 188.5 | |
Flight Hours Previously Approved | 144 | |
Total Used | 44.5 | 110 |
Total Remaining | 34 |
19P018 Flight Reports | ||||||
---|---|---|---|---|---|---|
Date | Flt # | Purpose of Flight | Duration | Running Total | Hours Remaining | Miles Flown |
10/02/18 | ORACLES Science Flight #3 | Science | 8.5 | 8.5 | 135.5 | 1940 |
10/03/18 | ORACLES Science Flight #4 | Science | 8.5 | 17 | 127 | 1970 |
10/05/18 | ORACLES Science Flight #5 | Science | 9 | 26 | 118 | 2000 |
10/07/18 | ORACLES Science Flight #6 | Science | 8.4 | 34.4 | 109.6 | 2000 |
10/10/18 | ORACLES Science Flight #7 | Science | 8.3 | 42.7 | 101.3 | 1970 |
10/12/18 | ORACLES Science Flight #8 | Science | 5.3 | 48 | 96 | 800 |
10/15/18 | ORACLES Science Flight #9 | Science | 7.8 | 55.8 | 88.2 | 1700 |
10/17/18 | ORACLES Science Flight #10 | Science | 8.5 | 64.3 | 79.7 | 2000 |
10/19/18 | ORACLES Science Flight #11 | Science | 8 | 72.3 | 71.7 | 1800 |
10/21/18 | ORACLES Science Flight #12 | Science | 8.2 | 80.5 | 63.5 | 1800 |
10/23/18 | ORACLES Science Flight #13 | Science | 8.1 | 88.6 | 55.4 | 1800 |
10/25/18 | ORACLES Transit #1 | Transit | 7.8 | 96.4 | 47.6 | 2009 |
10/26/18 | ORACLES Transit #2 | Transit | 7 | 103.4 | 40.6 | 2100 |
10/27/18 | ORACLES Transit #3 | Transit | 5.8 | 109.2 | 34.8 | 1692 |
10/27/18 | ORACLES Transit #4 | Transit | 0.8 | 110 | 34 | 72 |
18P004 Flight Reports | ||||||
---|---|---|---|---|---|---|
Date | Flt # | Purpose of Flight | Duration | Running Total | Hours Remaining | Miles Flown |
09/17/18 | ORACLES ATF | Check | 1.3 | 1.3 | 187.2 | 0 |
09/19/18 | ORACLES PTF | Check | 3.7 | 5 | 183.5 | 0 |
09/21/18 | ORACLES Transit #1 | Transit | 6.3 | 11.3 | 177.2 | 1716 |
09/22/18 | ORACLES Transit #2 | Transit | 8.2 | 19.5 | 169 | 2131 |
09/24/18 | ORACLES Transit #3/Science Flight | Transit | 9.3 | 28.8 | 159.7 | 2500 |
09/27/18 | ORACLES Science Flight #1 | Science | 8 | 36.8 | 151.7 | 1875 |
09/30/18 | ORACLES Science Flight #2 | Science | 7.7 | 44.5 | 144 | 2400 |
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.
ORACLES - P-3 Orion - WFF 10/05/18 Science Report
Transited on 5E to 9.0S, then headed east to find low-cloud-fraction region. At ~7E went south to 9.5S, then headed west.
Did a radiation wall between approx. 5.5E and 7W on 9.5S. This included, in order:
- High-altitude overpass of line where we’ll do radiation wall
- Square spiral from ~6km to surface in mostly-cloudy conditions toward east end of wall (~6.6E)
- Above-cloud leg
- In-cloud leg
- Below-cloud leg
- Brief 2ndabove-cloud leg for AOD measurement
- 3 vertically-stacked legs in the plume for aerosol in-situ measurements
- 2ndhigh-altitude overpass of radiation wall line
- Square spiral from ~6km to surface in clear conditions (a “hole” in the cloud cover), towards west end of wall (~5.9E)
- Short below-cloud leg, in-cloud legs and above-cloud legs in transit back to 5E line
- Short in-situ aerosol leg in-transit back along 5E line
Boundary layer was the most polluted we’ve seen so far in ORACLES 2018. Cloud droplet number concentrations were accordingly elevated, in both the satellite retrievals and in the P3 cloud probe measurements. Based on chemical ratios from the aerosol in-situ measurements it also appeared to be a more aged plume than on other days in ORACLES 2018.
This will make a very good case for radiative closure, given the two square spirals in different conditions, the full radiation wall, and the moderate RH in the plume (which makes it easier to estimate the ambient-RH aerosol extinction from the low-RH in-situ scattering and absorption measurements).
SPECIAL NOTES:
- Preliminary analysis indicates the aerosol measured on this flight was more aged than on other flights.
- Observed Kelvin-Helmholtz waves in top of aerosol layer on HSRL (e.g. see ~09:23-09:25UTC). Could also see this in 4STAR AOD variations.