Soot Particle Aerosol Mass Spectrometer: Development, Validation , and Initial Application
Aerosol Physics and Chemistry Validation NUIG...Aerosol Physics and Chemistry Validation NUIG...
Transcript of Aerosol Physics and Chemistry Validation NUIG...Aerosol Physics and Chemistry Validation NUIG...
Aerosol Physics and Chemistry ValidationNUIG
Networks of continuous Observing Stations:
EMEP - European
IMPROVE - US
GAW - Global
Generally, good coverage with PM mass for inorganic species,
Poor coverage for chemical mass
Poorer coverage for size-resolved chemical mass
Some stations (i.e. Mace Head) have semi-continuous size resolved measurements in recent years (ie 2003 on).
Model first simulation
Desert dust and Sea-salt – 3 size bins.
1 December 2002 to 30 June 2003
Series of 12-hour forecasts starting every 12 hours from the ECMWF operational analyses.
Suggested initial validation period – January to June 2003
EMEP
IMPROVE
December 2000
Bukit KotoTabang
South Pole
Point Barrow
Mauna Loa
Alert
Pallas-Sodankylä
Minamitorishima
Assekrem-Tamanrasset
Arembepe
Ushuaia
Izaña
Amsterdam Island Cape Grim
Cape Point
Samoa
Ny Ålesund
Lauder
MaceHead Zugspitze-Hohenpeissenberg
Mt Waliguan
NeumayerStation
Mt Kenya
PolarCircle
40
0
40
80
40
0
40
80
120160 80 40 0 40 80 120 160
GAW
GAW
GAW
GAW
GAW
Efforts to Date
Collation of databases:
All available EMEP, GAW and IMPROVE data downloaded to NUIG.
Analysis for particular data/parameter coverage (on-going)
Registration on GEMS-MARS system
Development of MARS decoder and extraction software for extracting model aerosol fields for comparison with databases.
Identification of ‘clean-air’ periods over NE Atlantic (Mace Head) for comparison of model sea-salt distributions:
(1) Near daily 24-hour PM10 sea-salt
(2) Weekly samples of size segregated sea-salt fields
Initial Sea-Salt Mass Comparison – N. Atlantic
Sea Spray Chemistry over the North East Atlantic
mas
s fr
actio
n(%
)
10
20
30
40
50
60
70
80
90
100
mas
s(µg
/m3 )
1
2
3
4
5
6
7
8
9
10sea-salt NH4 nss-SO4 NO3 WSOC WIOC BC
not d
etec
tabl
e
SUMMER
D(µm)
0.06 0.125 0.25 0.5 1 2 4 8
mas
s fr
actio
n(%
)
0
10
20
30
40
50
60
70
80
90
100
mas
s(µg
/m3 )
0
1
2
3
4
5
6
7
8
9
10
(a) LBA period
(b) HBA period
Seasonality in aerosol mass over the North East Atlantic
Dp, µm
0.1 1 10
aero
sol m
ass,
dM
/dlo
gDp, µg
/m3
0.1
1
10
spring to autumnwinterMOUDI inlet D50
Dp, µm
2 3 4 5 61
10
20
30
40
50
Sea Spray Chemistry over the North East Atlantic
month
1 2 3 4 5 6 7 8 9 10 11 12
sea
salt
fine
mod
e co
ncen
tratio
n, µ
g/m
3
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
sea
salt
fine
mod
e co
ncen
tratio
n, µ
g/m
3
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
month
1 2 3 4 5 6 7 8 9 10 11 12
nss
sulp
hate
fine
mod
e co
ncen
tratio
n, µ
g/m
3
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
nss
sulp
hate
fine
mod
e co
ncen
tratio
n, µ
g/m
3
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
month
1 2 3 4 5 6 7 8 9 10 11 12
TC fi
ne m
ode
conc
entra
tion,
µgC
/m3
0.0
0.2
0.4
0.6
0.8
1.0
1.2
TC fi
ne m
ode
conc
entra
tion,
µgC
/m3
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Aerosol Scattering over the North East Atlantic
Scat
terin
g co
effic
ient
(m-1
)
5.0e-6
1.0e-5
1.5e-5
2.0e-5
2.5e-5
3.0e-5
3.5e-5
Month1 2 3 4 5 6 7 8 9 10 11 12
0.0
5.0e-6
1.0e-5
1.5e-5
2.0e-5
2.5e-5
3.0e-5
3.5e-5
Ang
stro
m e
xpon
ent
0.0
0.5
1.0
1.5
2.0
Month1 2 3 4 5 6 7 8 9 10 11 12
0.0
0.5
1.0
1.5
2.0
In-Situ Sea Spray Fluxes over the North East Atlantic
Sea Spray Chemistry over the North East Atlantic
http://www.empa.ch/gaw/gawsis/default.asp
and selecting by parameter [Aerosol] Mass (major inorganic components)
The Contributing stations are
Gaw Global Stations
Amsterdamn IslandCape Grim Mace Head Mauna Loa AlertJungfraujoch
Then there seems to be a few GAW Regional Stations such as
such as UTO, SNIEZKA, K-PUSTA,Anmyeon-do, Saturna Island, Kejimkujik lebaExperimental Lakes area, Esther and Algoma