Mackenzie Smith

plan: 

- Expected PBL ~ 8,000 ft, so try for profile up to ~ 10,000 ft. Vertical profiles located at 1) outset (between KMOT and pt. 1), 2) in the west (south of pt. 2 - make sure we've returned to background levels of ethane/methane), and 3) end (between pt. 9 and KMOT).

- Three flasks (northern leg, above 


In-flight notes:

5:23:30 PM 5/21/2014 first vertical profile - passed cloud base at ~ 5,000 ft-ish

(forgot time stamp --> around 5:32 I think) - cloud base on vert. prof. descent ~ 6,000 ft

5:44 PM 5/21/2014 so far, observed winds (wind from aircraft cockpit and wind displ. in IGOR showing easterly direction for first leg (KMOT to pt. 13) - pretty much parallel to flight path. Thus not much enhancement of anything seen.

5:51 PM 5/21/2014 passed a flare on right about 1 minute prior

5:52 PM 5/21/2014 Wind seems to be a little more SE going from pt. 13 to pt. 2 - seeing some small and broad enhancements in ethane/methane

5:54:00 PM 5/21/2014 flares start to be seen off to the left of aircraft - seen in data as sharp eth/meth peaks - wind dir. ~ 120-150 deg.

6:01:40 PM 5/21/2014 - Drilling rig spotted to left of Tw. Otter --> cause of larger > 20 ppb eth. enhancement?

6:02:40 PM 5/21/2014 - start flask sample 1

6:04 PM 5/21/2014 - note: ethane and methane enhancements look nicely correlated and are of a similar magnitude (~20 to 30 ppb) on this flight leg (pt. 13 to pt. 2).


6:06-6:07-ish PM 5/21/2014 tall pipe flares black carbon enhancement from 

6:19 PM 5/21/2014 passing gas plant on the left of Otter


6:28 PM 5/21/2014 - went over feedlot --> methane spike with no ethane!

6:37:00 PM 5/21/2014 - begin dip to 600 agl to survey gas plant near pt. 8 

6:47 PM 5/21/2014 - wind going from pt. 8 to pt. 9 is from N (NE to NW), with lots of fluctuations --> think we're seeing some stuff, so stay on flight track and at alt. (1000 agl) for a bit. 


7:03 PM 5/21/2014 enormous flare to left and fly over of a separate


7:05:40 PM 5/21/2014 depart from path to circle three flares - alot BC seen by Jeff around here



7:12 PM 5/21/2014 start a circling vertical profile to look at mixing with vertical - take flask #2 on this vert. prof.

7:20 PM 5/21/2014 cloud deck looks to be at about 7500  to 8000 ft. 

7:22 PM 5/21/2014 as we get down to ~ 4000 agl, see big ethane peak, apparently crossed over flares again

7:25 PM 5/21/2014 do a third flask at the bottom of the vert. profile, while we still have at least some ethane enhancement

7:34 PM 5/21/2014 giant power plant to the left --> maybe come back at some point?looks like massive amt of smoke (maybe water though?) took a video on phone.

7:40:30 PM 5/21/2014 three small fires/smoke spotted to right of Tw. Otter 



L2

Tim Newberger

9:28 PM 5/21/2014  some burning near point 1 will attempt to fly through

9:30 PM 5/21/2014  in the plume, some property owner burning very small fire, calibration on picarro 
timed perfectly with plume fly through. doh

9:59 PM 5/21/2014 big ethane 130 ppb and methane 2.2 ppm spikes about 1 -2 minutes earlier, passed north of a well pad with a large pond, Jeff took photo

10:09 PM 5/21/2014  spike 1 minute earlier in ethane 15 ppb, we were down wind of a well pad with a tanker truck just leaving the site.