![]() This will lead to accelerated and increased snowmelt, Surface and decrease the snow reflectivity (Warren and Wiscombe, 1980 įlanner et al., 2007). Once the particles are scavenged from theĪtmosphere, possibly far from their emission source, BC can reach the snow In absorbing solar radiation and is a vital component in Earth's radiativeīalance (Bond et al., 2013). Most light-absorbing aerosol (LAA) by unit of mass, BC is highly efficient ![]() Soot refers to carbonaceous particles formed during the incompleteĬombustion of hydrocarbon fuels and includes black carbon (BC) and organicĬarbon (OC) but can also include other elements, such as sulfates. In the range of the published MAC of airborne BC aerosol. Application of the correction functions to earlier published fieldĭata from the Himalaya and Finnish Lapland yielded mass absorption coefficient (MAC) values of The ultrasonic bath increasedĪbsorption still further, roughly by a factor of 1.5, compared to only mixing Section by approximately a factor of 2 for the liquid-based filters, which is probably due to the BC particles Particles both mixed in water and further treated in an ultrasonic bath.Ĭomparison of BC collected from airborne particles with BC mixed in waterįilters indicated a higher mass absorption cross In the next stage correctionįactors were determined for BC particles mixed in water and also for BC The multiple-scatteringĬorrection factor ( C ref) of the quartz filters for airborne sootĪerosol is estimated to be ∼3.4. (PSAPs) we observed a 20 % scattering enhancement for quartz filtersĬompared to the standard PSAP Pallflex filters. With particle soot absorption photometers Here we investigate micro-quartzįilters' optical response to BC experiments in which the particles are initially Several measurement techniques of LAA in snow collect the Measurements of LAA, such asīlack carbon (BC) and mineral dust, have been observed globally to darken ![]() Processes that lead to increased snowmelt. The deposition of light-absorbing aerosol (LAA) onto snow initiates
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