Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue...
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![Page 1: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/1.jpg)
Characterization of transport and dynamical boundaries during CONTRAST
using chemical tracers
Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook
RF06, Jan 25: Shear line just west of GuamRF10, Feb. 8: Plume of CO northeast of Guam
![Page 2: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/2.jpg)
The WRF low-level wind analysis from 00z on 25 January shows the air mass boundary as a wind shift line extending from Yap (PTYA) to northwest of Guam (PGUM) to 20N, 154E. The thermal contrast on either side of the front is small south of 18N, so the boundary is called a shear line rather than a cold front.
![Page 3: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/3.jpg)
The 3km WRF analysis shows that the location of the GV’s spiral descent (17N,138E) was well into the post-frontal air mass.
![Page 4: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/4.jpg)
RF06 Trajectory analysis for the last part of the flight on both sides of the shear line.
Trajectories are color coded by pressure along the flight track.Initial (left) & - Day 1 (right)
RF06 RF06
![Page 5: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/5.jpg)
RF06 Trajectory analysis for the last part of the flight on both sides of the shear line
Days -2 & -3
RF06 RF06
![Page 6: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/6.jpg)
12x103
10
8
6
4
2
0
Alti
tud
e, m
100806040200Benzene, pptv
100806040200
O3, ppbv
00:00 03:00 06:00
Time, UTC
O3
VOC
RF06 O3/CO/H2O time series
RF06 vertical profile of ozone and benzene west of the shear line
![Page 7: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/7.jpg)
RF06; –day 1 back trajectories from < 4.5km in the dip west of the shear line. Trajectories are color coded by ozone mr.
![Page 8: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/8.jpg)
RF06: - day 2 back trajectories from < 4.5km in the dip west of the shear line. Trajectories are color coded by ozone mr.
![Page 9: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/9.jpg)
RF06: Four vertical profilesGuam ascent (purple), Guam descent (red),
West of shear line descent (yellow), west of shear line ascent (orange)
Alkanes are indicative of urban influenced air masses
12x103
10
8
6
4
2
0
Alti
tud
e, m
6004002000Propane, pptv
00:00 03:00 06:00
Time, UTC
TOGA AWAS
12x103
10
8
6
4
2
0
Alti
tud
e, m
150100500n-Butane, pptv
00:00 03:00 06:00
Time, UTC
TOGA AWAS
![Page 10: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/10.jpg)
12x103
10
8
6
4
2
0
Alti
tud
e, m
100806040200isobutane, pptv
00:00 03:00 06:00
Time, UTC
TOGA AWAS
RF06: Four vertical profilesGuam ascent (purple), Guam descent (red),
West of shear line descent (yellow), west of shear line ascent (orange)
Benzene and isobutane are also indicative of urban influenced air masses
12x103
10
8
6
4
2
0
Alti
tud
e, m
100806040200benzene, pptv
00:00 03:00 06:00
Time, UTC
TOGA AWAS
![Page 11: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/11.jpg)
RF06: Four vertical profilesGuam ascent (purple), Guam descent (red),
West of shear line descent (yellow), west of shear line ascent (orange) 12x10
3
10
8
6
4
2
0
Alti
tud
e, m
200150100500Acetonitrile, pptv
00:00 03:00 06:00
Time, UTC
12x103
10
8
6
4
2
0
Alti
tud
e, m
10008006004002000Acetone, pptv
00:00 03:00 06:00
Time, UTC
Biomass burning indicators are not elevated
![Page 12: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/12.jpg)
RF06: Four vertical profilesGuam ascent (purple), Guam descent (red),
West of shear line descent (yellow), west of shear line ascent (orange)
Marine BL indicators are not elevated
12x103
10
8
6
4
2
0
Alti
tud
e, m
2.52.01.51.00.50.0Dibromomethane (CH2Br2), pptv
00:00 03:00 06:00
Time, UTC
TOGA AWAS
12x103
10
8
6
4
2
0
Alti
tud
e, m
2.52.01.51.00.50.0Bromoform, pptv
00:00 03:00 06:00
Time, UTC
TOGA AWAS
![Page 13: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/13.jpg)
RF06: Four vertical profilesGuam ascent (purple), Guam descent (red),
West of shear line descent (yellow), west of shear line ascent (orange) 12x10
3
10
8
6
4
2
0
Alti
tud
e, m
76543210ethyl nitrate, pptv
00:00 03:00 06:00
Time, UTC
TOGA AWAS
12x103
10
8
6
4
2
0
Alti
tud
e, m
121086420Isopropyl Nitrate, pptv
00:00 03:00 06:00
Time, UTC
TOGA AWAS
![Page 14: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/14.jpg)
12x103
10
8
6
4
2
0
Alti
tud
e, m
150100500n-Butane, pptv
12840n-butyl nitrate, pptv
00:00 03:00 06:00
Time, UTC
n-butane (TOGA) n-butane (AWAS) n-butyl nitrate (AWAS)
RF06: Four vertical profilesGuam ascent (purple), Guam descent (red),
West of shear line descent (yellow), west of shear line ascent (orange)
Initial calculations show a photochemical lifetime of the lowest altitude samples of ~3 days based on the benzene/toluene ratio.
![Page 15: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/15.jpg)
RF10 (Feb. 8) CAM-Chem forecast of CO River at 200mb
![Page 16: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/16.jpg)
RF10 Trajectory analysis CO PlumePlume location on the flight track Day -1
![Page 17: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/17.jpg)
RF10 Trajectory analysis CO PlumeDay -3
![Page 18: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/18.jpg)
RF10 Trajectory analysis CO PlumeDay -7
![Page 19: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/19.jpg)
MODIS Fire counts Feb 4 – Feb 12, 2014
Modis Fire Count Map: Christine Weidinmyer
![Page 20: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/20.jpg)
RF10: CO plume180
160
140
120
100
80
60
CO
, p
pb
v
00:30 00:40 00:50 01:00 01:10 01:20CONTRAST RF10, 2/8/14
600
500
400
300
200
100
0
HC
N,
pp
tv
120
100
80
60
40
20
0
O3 , p
pb
v
16x103
14
12
10
8
6
4
2
0
altitu
de
, m
250
200
150
100
50
0
Ace
ton
itrile
, p
ptv
800
600
400
200
0
Ace
ton
e, p
ptv
HCN GV Altitude Acetonitrile CO Acetone O3
180
160
140
120
100
80
60
CO
, p
pb
v
00:30 00:40 00:50 01:00 01:10 01:20CONTRAST RF10, 2/8/14
40
30
20
10
0
Be
nze
ne
, p
ptv
160
140
120
100
80
60
40
20
0
Ace
teta
lde
hyd
e, p
ptv
16x103
14
12
10
8
6
4
2
0
altitu
de
, m
200
150
100
50
0
Fo
rma
lde
hyd
e,
pp
tv
14
12
10
8
6
4
2
0
n-B
uta
ne
, pp
tv
Benzene Acetaldehyde formaldehyde n-Butane GV Altitude CO
![Page 21: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/21.jpg)
RF10: Vertical profiles
12
10
8
6
4
2
0
Alti
tude
, km
1301201101009080
CO, ppbv
5004003002001000HCN, pptv
200150100500Acetonitrile, pptv
CO HCN Acetonitrile
12
10
8
6
4
2
0
Alti
tud
e,
km
1301201101009080
CO, ppbv
3.02.52.01.51.00.50.0Bromoform, pptv
403020100Benzene, pptv
CO Bromoform Benzene
![Page 22: Characterization of transport and dynamical boundaries during CONTRAST using chemical tracers Sue Schauffler, Elliot Atlas Eric Apel, Rebecca Hornbrook.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649ea15503460f94ba4924/html5/thumbnails/22.jpg)
Questions?
Thanks again to Becky, Eric, Elliot, Shawn, Jim, and Laura for their assistance with this presentation.