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Marine aerosol measurements
AMS Users Meeting 2015
Jurgita Ovadnevaite | 13 September 2015
Darius Ceburnis, Manuel Dall’Osto & Colin O’Dowd,
C-CAPS colleagues, CNR Bologna, Aerodyne Research
AMS Users Meeting 2015
Direct and indirect climate effect?
directly scattering and
absorbing radiation
serving as condensation nuclei
during cloud formation
Direct and indirect climate effect?
directly scattering and
absorbing radiation
serving as condensation nuclei
during cloud formation
AMS Users Meeting 2015
Atmospheric Research Station at Mace Head (53º20' N, 9º54' W)
PEGASO Antarctic cruise January-February 2015
AMS Users Meeting 2015
12
10
8
6
4
2
0
AM
S O
M,
g m
-3
6543210
OC PM1, g m-3
Tank slope=2.1Ambient slope=2.4
Bubble tank (without CE)
Ambient (CE comp dep)
R = 0.96
Sea salt quantification by the HR-ToF-AMS
Jurgita Ovadnevaite Darius Ceburnis, Manjula Canagaratna, Douglas R. Worsnop,
Harald Berresheim, Jakub Bialek, A. Manders, G. de Leeuw
and Colin O’Dowd
15th AMS Users Meeting
Sea salt detection by the AMS
To be, or not to be…
Sea Salt
15th AMS Users Meeting
Ovadnevaite et al., 2012 JGR
Do NOT Overload!!!! Max ambient ~5 µg m-3, saturation at >20 µg m-3
AMS Users Meeting 2015
5 2
5 0
87 0
8 2
10 1
79 0
13 2 20 4
61
0
15 3 24
4
52
1
22 2
32
6
36
3
33 1
45
5 12
4
21 1
59
3 9
7
40 1
38 4
15
4
24 2
36
4 31
3
28 3
34
6 29
1
11
2 12 1
73 0
7
2 6 1
84 0
19%
25%
3%
50%
2%
2%
mP
Jan
Feb March
Apr
May
Jun
Jul
AugSep
Oct
Nov
Dec
14 4 26
1
54
0
23 2 16
1
58
0
16 3 20
3
57
0
20 2
48
4 24
1
21 2
46
6 21
4
35 2
40
5 15
3
18 1
50
4 22
5 20
1
56
5 13
5
21 4
21
3
49
1
9 2
9 1
78 0
11 3
11 1
75
0
20% 35%
4%
37%
3%
2%
mA
Jan
Feb March
Apr
May
Jun
Jul
AugSep
Oct
Nov
Dec
43
11
32 13
1 0
38
11
33 17
1 0
43
23
21
12 0 0
37
24
23
15
0 1
49
6
30
13 1 1
43
4
37 14
0 2
36 2
47 10 1 4 58
5 27
9 0 1
33 4
46 15
1 0
44
7
38
10 0
0
49
6
33
11 1
0
43%
13%
30%
13%
1% 1%
cP
Jan
Feb March
Apr
May
Jun
Jul
AugSep
Oct
Nov
Dec
9 2
4 0
85 0
14 3
14 1
69
0
17 3 27
4
49
0
14 2 35
5
41
1
21 2
51
6 14
5
20 2
51
10 14
4
20 1
56
3 14
6 32 2
47
4 12
3
30 2
32
4 30
2
28 3
28
6 34
1
10 2
25 4
58
0
14
5 20 3
58
0
18% 36%
4%
37%
2%
2%
mT
Jan
Feb March
Apr
May
Jun
Jul
AugSep
Oct
Nov
Dec
Sea salt
NO3-
Organics
MSA
SO42-
NH4+
7 years of continuous Aerosol Mass Spectrometry measurements at Mace Head Atmospheric Research station revealed seasonal trends in the chemical composition of submicron aerosol as well as chemical signatures associated with air masses of different origin.
AMS measurements at Mace Head
AMS Users Meeting 2015
4
3
2
1
0
Conce
ntr
atio
n [
µg m
-3]
00:0016/08/2009
00:0017/08/2009
Date
1.0
0.8
0.6
0.4
0.2
0.0
Enrich
men
t
4
3
2
1
0
Conce
ntr
atio
n [
µg m
-3]
00:0011/11/2010
12:00 00:0012/11/2010
12:00
Date
1.0
0.8
0.6
0.4
0.2
0.0
Enrich
men
t
OM Sea salt Enrichment OM Sea salt Enrichment
4
3
2
1
0
Con
cent
ratio
n [µ
g m
-3]
00:0016/08/2009
00:0017/08/2009
Date
1.0
0.8
0.6
0.4
0.2
0.0E
nrichment
4
3
2
1
0
Con
cent
ratio
n [µ
g m
-3]
00:0011/11/2010
12:00 00:0012/11/2010
12:00
Date
1.0
0.8
0.6
0.4
0.2
0.0
Enrichm
ent
OM Sea salt Enrichment OM Sea salt Enrichment
82%
2% 5% 0% 11%
0%
74%
2% 8% 0% 15%
1%
59%
2% 12% 0%
23%
4% 50%
2%
15% 1% 27%
4%
35% 2%
21%
3%
34%
6%
11%
1% 33%
4%
46%
5%
9% 1%
21% 7%
60%
3%
14% 1% 39%
4%
38%
3%
30% 2%
23%
3%
38%
4%
28% 3%
27%
1%
35%
6%
69%
2% 10% 0% 17%
1%
71%
2% 10% 0%
16% 1%
48%
18%
2% 28%
3% 2% mP
Jan
Feb March
Apr
May
Jun
Jul
AugSep
Oct
Nov
Dec
1.0
0.8
0.6
0.4
0.2
0.0
[g
m-3
]
1 2 3 4 5 6 7 8 9 101112
2.46OrganicsOrganics
2.0
1.5
1.0
0.5
0.0
[g m
-3]
1 2 3 4 5 6 7 8 9 101112
0.20
0.15
0.10
0.05
0.00
[g m
-3]
1 2 3 4 5 6 7 8 9 101112
0.25
0.20
0.15
0.10
0.05
0.00
[g
m-3
]1 2 3 4 5 6 7 8 9 101112
80x10-3
60
40
20
0[
g m
-3]
1 2 3 4 5 6 7 8 9 101112
Sea salt
NO3-
Organics
MSA
SO42-
NH4+
Neutralization
MSA/SO42-
2.0
1.5
1.0
0.5
0.0
[g
m-3
]
1 2 3 4 5 6 7 8 9 101112
Marine Polar
a) b)
82%
2% 5% 0% 11%
0%
74%
2% 8% 0% 15%
1%
59%
2% 12% 0%
23%
4% 50%
2%
15% 1% 27%
4%
35% 2%
21%
3%
34%
6%
11%
1% 33%
4%
46%
5%
9% 1%
21% 7%
60%
3%
14% 1% 39%
4%
38%
3%
30% 2%
23%
3%
38%
4%
28% 3%
27%
1%
35%
6%
69%
2% 10% 0% 17%
1%
71%
2% 10% 0%
16% 1%
48%
18%
2% 28%
3% 2% mP
Jan
Feb March
Apr
May
Jun
Jul
AugSep
Oct
Nov
Dec
1.0
0.8
0.6
0.4
0.2
0.0
[g
m-3
]
1 2 3 4 5 6 7 8 9 101112
2.46OrganicsOrganics
2.0
1.5
1.0
0.5
0.0
[g
m-3
]
1 2 3 4 5 6 7 8 9 101112
0.20
0.15
0.10
0.05
0.00
[g
m-3
]
1 2 3 4 5 6 7 8 9 101112
0.25
0.20
0.15
0.10
0.05
0.00
[g
m-3
]
1 2 3 4 5 6 7 8 9 101112
80x10-3
60
40
20
0[
g m
-3]
1 2 3 4 5 6 7 8 9 101112
Sea salt
NO3-
Organics
MSA
SO42-
NH4+
Neutralization
MSA/SO42-
2.0
1.5
1.0
0.5
0.0
[g
m-3
]
1 2 3 4 5 6 7 8 9 101112
Marine Polar
a) b)
Ovadnevaite et al., 2014 JGR
AMS Users Meeting 2015
Ambient and Laboratory studies
O’Dowd et al., 2015 Nat. Scientific Reports
Wave history
Ovadnevaite et al., 2012 JGR
AMS Users Meeting 2015
RHw (Reynolds number)
𝑅𝐻𝑤 =𝐶𝑑1/2
∗ 𝑈10∗HS
𝜈𝑤 Cd - Drag coefficient
U10-10 m wind speed HS - Significant height of wind waves
w - kinematic viscosity of sea water
w depends on SST and salinity
600
500
400
300
200
100
0
dN
/dlo
gD
2 3 4 5 6 7 8 9
0.12 3
Ddry [m]
25
20
15
10
5
Win
d sp
eed [m
s-1]
i i CMDi Fi(RHw)
1 1.37 0.018 104.5*(RHw-1e5)0.556
2 1.5 0.041 0.0442*(RHw-1e5)1.08
3 1.42 0.09 149.6*(RHw-1e5)0.545
4 1.53 0.23 2.96*(RHw-1e5)0.79
5 1.85 0.83 0.51*(RHw-2e5)0.87
Ovadnevaite et al., 2014 ACP
(Goddijn-Murphy et al., 2011)
AMS Users Meeting 2015
Ovadnevaite et al., 2014 ACP
SSSF intercomparison
AMS Users Meeting 2015
AMS Users Meeting 2015
AMS Users Meeting 2015
Atmospheric Research Station at Mace Head (53º20' N, 9º54' W)
PEGASO Antarctic cruise January-February 2015
AMS Users Meeting 2015
AMS Users Meeting 2015
AMS Users Meeting 2015
14%
0% 7% 0%
79%
AMS Users Meeting 2015
50x10-12
40
30
20
10
0
Sig
nal (a
mps)
150140130120110100908070605040302010
m/z
From:01/27/2015 15:56:32To:01/27/2015 16:35:10
120x10-12
100
80
60
40
20
0
58
18:0007/01/2015
00:0008/01/2015
06:00 12:00 18:00 00:0009/01/2015
UTC Time
100x10-12
80
60
40
20
0
-20
43
+4
4+
55
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Co
nce
ntr
atio
n,
g m
3
00:0005/01/2015
00:0006/01/2015
Time
Org NO3 SO4 NH4 SS MSA
AMS Users Meeting 2015
AMS Users Meeting 2015
6
4
2
0Rel
ati
ve
inte
nsi
ty [
%]
100908070605040302010m/z
16
CxHy CxHyOw >1 CxHyOk =1 Others
0.06
0.04
0.02
0.00
Rel
ati
ve
inte
nsi
ty
100908070605040302010
m/z
0.16
0.08
Cx CxHy CxHyO
CxHyOw>1 CxHyN
CxHyON
CxHyOw>1N
CS
HO
AMS Users Meeting 2015
Thank you!
This work was supported by the ESA (OSSA), SFI Ireland, HEA-PRTLI4, BACCHUS EU FP7, PEGASO.
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