cosmic weather, atmospheric nanoaerosols, and human health
DESCRIPTION
COSMIC WEATHER, ATMOSPHERIC NANOAEROSOLS, and HUMAN HEALTH. A.A. Lushnikov, Yu.S. Lyubovtseva, V.A. Zagaynov, and A.D. Gvishiani Geophysical Center of RAS, Moscow, Karpov Institute of Physical Chemistry, Moscow. RIGHT AFTER THE SUN FLARE. COMING UP. Introduction - PowerPoint PPT PresentationTRANSCRIPT
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COSMIC WEATHER, ATMOSPHERIC NANOAEROSOLS,
and HUMAN HEALTH
A.A. Lushnikov, Yu.S. Lyubovtseva, V.A. Zagaynov, and A.D. Gvishiani
Geophysical Center of RAS, Moscow,Karpov Institute of Physical Chemistry, Moscow
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RIGHT AFTER THE SUN FLARE
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COMING UP
• Introduction• Cosmic weather and electrical state of the
atmosphere• Nanoaerosols, where are they from?• Ion - aerosol interactions and cloud
formation: from nanos to CCN• Nanos – interactions with human
organisms• Concluding remarks
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INTRODUCTION:ATMOSPHERIC AEROSOLS
• Clusters (size<1 nm)
• Nanoparticles (1 -- 50nm)
• Submicron particles (50 – 100nm)
• Micron particles (100 – 1000 nm)
• Coarse particles (>1000nm)
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Cosmic rays induced aerosol is coming up
COSMIC RAYS
ATMOSPHERIC IONS
NUCLEATION
CONDENSATION
COAGULATION
CLOUD CONDENSATION NUCLEI
CLOUDS
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Full model of aerosol formation
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NUCLEATION BURST
0 2 4 6 8 100
nucleation threshold
no nucleation burst
nucleation burst
TIME
CO
NC
EN
TR
AT
ION
OF
NU
CL
EA
TIN
F V
AP
OR
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Nucleation rate vs negative ion concentration
0 1 2 3 4 50
1
2
3
4
5
6
negative ion concentration
nu
cle
atio
n r
ate
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NUCLEATION BURST
TIME
SIZ
E
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NUCLEATION BURST
TIME
SIZ
E
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Condensation: transport from carrier gas
Diffusion zone
Kinetic zone
R>>l
a
R
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Characteristic lengths
• Ion mean free path• Coulomb’s length
)65( nmllc
kT
elc
2
lcl
Tv
Dl
2
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STRATOSPHERIC CLOUDS
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CONCLUDING REMARKS
• From cosmic rays to clouds is one of the most important processes. The very existence of life is not possible without aerosols.
• Cosmic weather is the important factor that exerts formation of secondary aerosols in the atmosphere
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NUCLEATION RATES
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RATE OF CHARGE FORMATION
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ANGSTROM EXPONENT and CN PRODUCTION
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AE and CN CONCENTRATIONS
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SOLAR ACTIVITY and AEROSOLS
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Charge enhances condensational growth
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Ion induced nucleation I
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Ion induced nucleation II
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Listvyanka 11.07.2004
0
200
400
600
800
1000
1200
1400
1600
1800
19:59 21:04 22:11 23:18Time
1/cm3
DIURNAL VARIATIONS OF PARTICLE NUMBER CONCENTRATION (lake Baikal)
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Particle size distribution
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Ion induced nucleation III
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Ion induced nucleation IV
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Mondy station. 27.07.03 Mondy 27.07.2004
0
100
200
300
400
500
600
700
0:01 2:04 4:07 6:10 8:13 10:16 12:36 15:10 17:15 19:31 21:35 23:52
Time
1/сm3