Real‐time single particle monitoring of a relative increase in marine aerosol concentration during winter rainstorms

Noble, Christopher A.; Prather, Kimberly A.

doi:10.1029/97gl02917

Cited by 19 publications

(26 citation statements)

References 24 publications

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“…(Noble and Prather, 1997;Gard et al, 1998). In this case, the relatively small signals for chloride ions is a good indicator of aged sea salt aerosol.…”

Section: Atofms Data Analysismentioning

confidence: 92%

Optical, physical and chemical properties of aerosols transported to a coastal site in the western Mediterranean: a focus on primary marine aerosols

et al. 2017

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Abstract. As part of the ChArMEx-ADRIMED campaign (summer 2013), ground-based in situ observations were conducted at the Ersa site (northern tip of Corsica; 533 m a.s.l.) to characterise the optical, physical and chemical properties of aerosols. During the observation period, a major influence of primary marine aerosols was detected (22-26 June), with a mass concentration reaching up to 6.5 µg m −3 and representing more than 40 % of the total PM 10 mass concentration. Its relatively low ratio of chloride to sodium (average of 0.57) indicates a fairly aged sea salt aerosol at Ersa. In this work, an original data set, obtained from online real-time instruments (ATOFMS, PILS-IC) has been used to characterise the ageing of primary marine aerosols (PMAs). During this PMA period, the mixing of fresh and aged PMAs was found to originate from both local and regional (Gulf of Lion) emissions, according to local wind measurements and FLEXPART back trajectories. Two different aerosol regimes have been identified: a dust outbreak (dust) originating from Algeria/Tunisia, and a pollution period with aerosols originating from eastern Europe, which includes anthropogenic and biomass burning sources (BBP). The optical, physical and chemical properties of the observed aerosols, as well as their local shortwave (SW) direct radiative effect (DRE) in clear-sky conditions, are compared for these three periods in order to assess the importance of the direct radiative impact of PMAs compared to other sources above the western Mediterranean Basin.As expected, AERONET retrievals indicate a relatively low local SW DRF during the PMA period with mean values of −11 ± 4 at the surface and −8 ± 3 W m −2 at the top of the atmosphere (TOA). In comparison, our results indicate that the dust outbreak observed at our site during the campaign, although of moderate intensity (AOD of 0.3-0.4 at 440 nm and column-integrated SSA of 0.90-0.95), induced a local instantaneous SW DRF that is nearly 3 times the effect calculated during the PMA period, with maximum values up to −40 W m −2 at the surface. A similar range of values were found for the BBP period to those during the dust period (SW DRF at the surface and TOA of −23 ± 6 and −15 ± 4 W m −2 respectively).The multiple sources of measurements at Ersa allowed the detection of a PMA-dominant period and their characterisation in terms of ageing, origin, transport, optical and physical properties and direct climatic impact.

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“…(Noble and Prather, 1997;Gard et al, 1998). In this case, the relatively small signals for chloride ions is a good indicator of aged sea salt aerosol.…”

Section: Atofms Data Analysismentioning

confidence: 92%

Optical, physical and chemical properties of aerosols transported to a coastal site in the western Mediterranean: a focus on primary marine aerosols

et al. 2017

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“…Since sulphate needs to be neutralized in order for significant amounts of ammonium nitrate to form, it is not surprising that the average nitrate levels for the entire study were low (Quinn and Bates, 2003;Brown et al, 2004;Bates et al, 2005). Mass m/z 30 could also arise from sodium nitrate formed in the atmosphere by reactions of nitrogen oxides with sea salt (e.g., Beichert and Finlayson-Pitts, 1996;Noble and Prather, 1997). Sodium nitrate has been detected in atmospheric particles with an AMS operating at 850 • C, which is a fairly high vaporization temperature necessary to detect sea salt (Allan et al, 2004b).…”

Section: Calculated Biogenic Organic Mass From Categories 2-5mentioning

confidence: 99%

Cluster Analysis of the Organic Peaks in Bulk Mass Spectra Obtained During the 2002 New England Air Quality Study with an Aerodyne Aerosol Mass Spectrometer

et al. 2006

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Abstract. We applied hierarchical cluster analysis to an Aerodyne aerosol mass spectrometer (AMS) bulk mass spectral dataset collected aboard the NOAA research vessel R. H. Brown during the 2002 New England Air Quality Study off the east coast of the United States. Emphasizing the organic peaks, the cluster analysis yielded a series of categories that are distinguishable with respect to their mass spectra and their occurrence as a function of time. The differences between the categories mainly arise from relative intensity changes rather than from the presence or absence of specific peaks. The most frequent category exhibits a strong signal at m/z 44 and represents oxidized organic matter probably originating from both anthropogenic as well as biogenic sources. On the basis of spectral and trace gas correlations, the second most common category with strong signals at m/z 29, 43, and 44 contains contributions from isoprene oxidation products. The third through the fifth most common categories have peak patterns characteristic of monoterpene oxidation products and were most frequently observed when air masses from monoterpene rich regions were sampled. Taken together, the second through the fifth most common categories represent on average 17% of the total organic mass that stems likely from biogenic sources during the ship's cruise. These numbers have to be viewed as lower limits since the most common category was attributed to anthropogenic sources for this calculation. The cluster analysis was also very effective in identifying a few contaminated mass spectra thatCorrespondence to: C. Marcolli (claudia.marcolli@env.ethz.ch) were not removed during pre-processing. This study demonstrates that hierarchical clustering is a useful tool to analyze the complex patterns of the organic peaks in bulk aerosol mass spectra from a field study.

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“…Semivolatile organic compounds particle-to-gas phase transfer may occur under such low pressure conditions. Real-time single particle mass spectrometry (SPMS) measurements of carbonaceous particles are able to provide unique information on many species by correlating the instantaneous carbonaceous particle composition with rapidly changing atmospheric conditions [20,21]. Many of these techniques are able to obtain both size and chemical composition information on individual particles with high temporal resolution [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Impact of biomass emissions on particle chemistry during the California Regional Particulate Air Quality Study

Qin

Prather

2006

International Journal of Mass Spectrometry

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Real‐time single particle monitoring of a relative increase in marine aerosol concentration during winter rainstorms

Cited by 19 publications

References 24 publications

Optical, physical and chemical properties of aerosols transported to a coastal site in the western Mediterranean: a focus on primary marine aerosols

Optical, physical and chemical properties of aerosols transported to a coastal site in the western Mediterranean: a focus on primary marine aerosols

Cluster Analysis of the Organic Peaks in Bulk Mass Spectra Obtained During the 2002 New England Air Quality Study with an Aerodyne Aerosol Mass Spectrometer

Impact of biomass emissions on particle chemistry during the California Regional Particulate Air Quality Study

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