IMPACT OF SAHARAN DUST TO PM10 CONCENTRATIONS

IN FARM

ENEA MEETING, 6th March 2010

A.Pederzoli1, M. Mircea1

1 ENEA, Centro Ricerche Bologna, Via Martiri Monte Sole, 4 – Italy-

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))

MAIN STEPS:

Timetable fino a giugno 2010:

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

SIZE DISTRIBUTION IN SKIRONAEROSOL SPECIES IN FARM

1. ADDING SKIRON DUST TO FARM 20x 20km2 RESOLUTION BCs

PMC1 ASOILPMC2 A25J

CLASS NAME CATEGORY

RADIUS

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 analysis27/07/2005

SKIRONRAMS

CASO BASE NUOVE BCs

25th -29th July 2005

“no dust” “dust”

2. NUOVO RUN DI FARM CON LE NUOVE BCs (“dust case”)

CASO BASE NUOVE BCs

25th -29th July 2005

“no dust” “dust”

5. NUOVO RUN DI FARM CON LE NUOVE BCs (“dust case”)

C_ASOIL