Aerosol characterization and snow chemistry at Terra Nova Bay
Entry ID: Aerosol_char_and_snow_chem_TNB

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Summary
Abstract: Antarctic aerosol was sampled at Terra Nova Bay using an inertial spectrometer
at high flow rate. This instrument can sample aerosol and deposit particles on
a membrane filter with size separation. The density of single particles and
average density vs. aerodynamic diameter has been evaluated. Chemical
composition of aerosol particles was determined by analyzing samples taken on
millipore filters by scanning electron microscope and x-ray energy
spectrometer. The results from this investigation are such that for particles
with radius > 0.5 micron, frequency of sea-salt increases when aerodynamic
diameter decreases. An opposite behavior is displayed by crustal elements. A
chlorine loss in sea-salt particles has been observed. The suggested mechanism
for this loss is: H2SO4 + 2NaCl = Na2SO4 + 2HCl. Condensation nuclei (CN)
concentrations were measured at Terra Nova Bay with an alcohol-based particle
counter. In January 1989 the mean value for CN was 490. The concentrations of
eight major ions (Cl-, NO-3, SO42-, Na+, K+, Ca2+, Mg++, H+) were determined
from fresh snow samples. These showed that precipitation is acidic, a fact
depending on H2SO4, HCl and HNO3.

Geographic Coverage
 N: -74.7119 S: -74.7119  E: 164.1138  W: 164.1138
 Min Altitude: 50.0M  Max Altitude: 50.0M

Temporal Coverage
Start Date: 1988-01-01
Stop Date: 1990-02-28


Location Keywords
CONTINENT > ANTARCTICA > TERRA NOVA BAY
CONTINENT > ANTARCTICA > CAMPO ICARO
GEOGRAPHIC REGION > POLAR


Science Keywords
ATMOSPHERE >AEROSOLS >AEROSOL PARTICLE PROPERTIES    [Definition]
ATMOSPHERE >AEROSOLS >AEROSOL PARTICLE PROPERTIES >AVERAGE DENSITY    [Definition]
ATMOSPHERE >AEROSOLS >AEROSOL PARTICLE PROPERTIES >AERODYNAMICS DIAMETER    [Definition]
ATMOSPHERE >AEROSOLS >AEROSOL PARTICLE PROPERTIES >CHEMICAL COMPOSITION    [Definition]
ATMOSPHERE >AEROSOLS >AEROSOL PARTICLE PROPERTIES >ION CONCENTRATION    [Definition]
ATMOSPHERE >AEROSOLS >CLOUD CONDENSATION NUCLEI    [Definition]
ATMOSPHERE >AEROSOLS >PARTICULATE MATTER    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Instrument
SCANNING ELECTRON MICROSCOPES    [Information]
SPECTROMETERS    [Information]


Quality
Aerosol chemical analysis trough SEM and EDAX. Chemical analysis of ions in
snow through ionic chromatograph. Condensation nuclei measurements by mean of
TSI Condensation nucleus counter Model 3020


Use Constraints
Not Applicable


Keywords
(PACS) Atmosphere
(PACS) Particles and aerosols
(PACS) Chemical composition and chemical interactions
(PACS) Aerosols


Data Set Progress
COMPLETE


Data Center
Institute of Atmospheric Sciences and Climate, Italian National Research Council, Italy    [Information]
Data Center URL: http://www.isac.cnr.it/

Data Center Personnel
Name: FRANCO PRODI
Phone: 39 051 6399618
Fax: 39 051 6399658
Email: f.prodi at isac.cnr.it
Contact Address:
via P. Gobetti 101
City: Bologna
Postal Code: 40129
Country: Italy



Distribution
Distribution_Media: Scientific publications
Distribution_Format: Not applicable
Fees: Not Applicable


Publications/References
G. Santachiara, F. Prodi, F. Vivarelli, V. Vitale (1990), Aerosol characterization and snow chemistry at Terra Nova Bay, Italian Research on Antarctic Atmosphere, 27, Editrice Compositori-Bologna, M. Colacino, G. Giovanelli and L. Stefanutti (Eds.)

G. Santachiara, F. Prodi, M. Tagliazucca (1989), Characterization of aerosol at Terra Nova Bay, Antartica, Italian Research on Antarctic Atmosphere, 20, Editrice Compositori-Bologna., M. Colacino, G. Giovanelli and L. Stefanutti(Eds.)

Santachiara G., Bonasoni P., Prodi F. (1992), Individual particle analysis of antarctic aerosols, Italian Research on Antarctic Atmosphere, 34, Editrice Compositori-Bologna, M. Colacino, G. Giovanelli and L. Stefanutti (Eds.)

Creation and Review Dates
DIF Creation Date: 2005-05-12
Last DIF Revision Date: 2011-04-15

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