Optical properties of secondary organic aerosols and their changes by chemical processes

T Moise, JM Flores, Y Rudich - Chemical reviews, 2015 - ACS Publications
1. INTRODUCTION Atmospheric aerosols play a key role in the Earth's atmosphere.
Aerosols influence cloud formation and their lifetime, they affect the distribution and amount …

Characterizing elemental, equivalent black, and refractory black carbon aerosol particles: a review of techniques, their limitations and uncertainties

DA Lack, H Moosmüller, GR McMeeking… - Analytical and …, 2014 - Springer
Elemental-, equivalent black-and refractory black-carbon are terms that have been defined
in order to dissect the more general term, black carbon, into its component parts related to its …

Brown carbon and internal mixing in biomass burning particles

DA Lack, JM Langridge, R Bahreini… - Proceedings of the …, 2012 - National Acad Sciences
Biomass burning (BB) contributes large amounts of black carbon (BC) and particulate
organic matter (POM) to the atmosphere and contributes significantly to the earth's radiation …

Sources, composition and absorption Ångstrom exponent of light-absorbing organic components in aerosol extracts from the Los Angeles Basin

X Zhang, YH Lin, JD Surratt… - Environmental science & …, 2013 - ACS Publications
We investigate the sources, chemical composition, and spectral properties of light-absorbing
organic aerosol extracts (ie, brown carbon, or BrC) in the Los Angeles (LA) Basin during the …

Absorption Angstrom Exponent in AERONET and related data as an indicator of aerosol composition

PB Russell, RW Bergstrom, Y Shinozuka… - Atmospheric …, 2010 - acp.copernicus.org
Recent results from diverse air, ground, and laboratory studies using both radiometric and in
situ techniques show that the fractions of black carbon, organic matter, and mineral dust in …

Solar absorption by elemental and brown carbon determined from spectral observations

R Bahadur, PS Praveen, Y Xu… - Proceedings of the …, 2012 - National Acad Sciences
Black carbon (BC) is functionally defined as the absorbing component of atmospheric total
carbonaceous aerosols (TC) and is typically dominated by soot-like elemental carbon (EC) …

Impact of brown and clear carbon on light absorption enhancement, single scatter albedo and absorption wavelength dependence of black carbon

DA Lack, CD Cappa - Atmospheric Chemistry and Physics, 2010 - acp.copernicus.org
The presence of clear coatings on atmospheric black carbon (BC) particles is known to
enhance the magnitude of light absorption by the BC cores. Based on calculations using …

Absorptivity of brown carbon in fresh and photo-chemically aged biomass-burning emissions

R Saleh, CJ Hennigan, GR McMeeking… - Atmospheric …, 2013 - acp.copernicus.org
Experiments were conducted to investigate light absorption of organic aerosol (OA) in fresh
and photo-chemically aged biomass-burning emissions. The experiments considered …

On the attribution of black and brown carbon light absorption using the Ångström exponent

DA Lack, JM Langridge - Atmospheric Chemistry and Physics, 2013 - acp.copernicus.org
The absorption Ångström exponent (AAE) of externally mixed black carbon (BC Ext), or BC
internally mixed with non-absorbing material (BC Int), is often used to determine the …

Light-absorbing impurities in Arctic snow

SJ Doherty, SG Warren, TC Grenfell… - Atmospheric …, 2010 - acp.copernicus.org
Absorption of radiation by ice is extremely weak at visible and near-ultraviolet wavelengths,
so small amounts of light-absorbing impurities in snow can dominate the absorption of solar …