IMPACT OF SAHARAN DUST
TO PM10 CONCENTRATIONS
IN FARM
A.Pederzoli1, M. Mircea1
1 ENEA,
Centro Ricerche Bologna, Via Martiri Monte Sole, 4 – Italy-
ENEA MEETING, 6th March 2010
Timetable fino a giugno 2010:
MAIN STEPS:
1. AGGIUNTA DI SKIRON-DUST ALLE BCs di FARM 20x 20km2
2. RUN DI FARM CON LE NUOVE BCs (“dust case”)
3. CONFRONTO TRA “dust case” e “no dust case” a 20 x 20 km2
4. ESTRAPOLAZIONE SUL DOMINIO 4 X 4 km2 “CI0” (Centro Italia) delle
nuove BCs -DUST
5. CONFRONTO TRA “dust case” e “no dust case” a 4 x 4 km2
6. CONFRONTO CON FARM 4x4 km2 (BCs= mappe climatologiche) su
Roma (Gariazzo et al. (2007))
1. ADDING SKIRON DUST TO FARM 20x 20km2 RESOLUTION BCs
AEROSOL SPECIES IN FARM
SIZE DISTRIBUTION IN SKIRON
AITKEN
ACCUMULATION
COARSE
ASO4
Sulphate mass
X
X
ANH4
Ammonium mass
X
X
ANO3
Nitrate mass
X
X
AORGA
Anthropogenic secondary organic mass
X
X
AORGPA
Primary organic mass
X
X
AORGB
Secondary biogenic organic mass
X
X
AEC
Elemental carbon mass
X
X
A25
unspecified anthropogenic mass
X
X
ACORS
Unspecified anthropogenic mass
X
ASEAS
Marine mass
X
ASOIL
Soil-derived mass
X
AH2)
Water mass
X
X
X
NUM
Number of particles
X
X
X
SRF
Surface area
X
X
X
PMC1 ASOIL
PMC2 A25J
CLASS
NAME
CATEG
ORY
RADIU
S
1
PMC1
CLAY
< 1 um
2
PMC2
SMALL
SILT
1 um 10 um
3
PMC3
LARGE
SILT
10 um 25 um
4
PMC4
SAND
> 25 um
Meteo analysis
27/07/2005
RAMS
SKIRON
2. NUOVO RUN DI FARM CON LE NUOVE BCs (“dust case”)
25th -29th July 2005
CASO BASE
“no dust”
NUOVE BCs
“dust”
5. NUOVO RUN DI FARM CON LE NUOVE BCs (“dust case”)
25th -29th July 2005
CASO BASE
“no dust”
NUOVE BCs
“dust”
C_ASOIL
Monte Libretti
25-29 July 2005
1,8
NO Dust case
1,6
Dust case
1,4
c_ASOIL m
( g m-3) .
1,2
1
0,8
0,6
0,4
0,2
0
25/07/2005
26/07/2005
27/07/2005
days
28/07/2005
29/07/2005
Monte Libretti
25-29 July 2005
14
NO Dust case
Dust case
12
c_PM10 m
(g m-3) .
10
8
6
4
2
0
25/07/2005
26/07/2005
27/07/2005
days
28/07/2005
29/07/2005