Production of dicarboxylic acids in the Arctic atmosphere at polar sunrise

Kawamura, Kimitaka; Kasukabe, Hideki; Yasui, Osamu; Barrie, Leonard A.

doi:10.1029/95gl00880

Cited by 78 publications

(61 citation statements)

References 22 publications

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“…This new reaction pathway involves reactions of Criegee intermediates in the condensed phase with aldehydes, ketones and alkenes and it does not involve acidity. Kawamura et al (1995Kawamura et al ( , 1996Kawamura et al ( , 2005 and Narukawa et al (2003) provide experimental evidence that Br chemistry in the Arctic transforms unsaturated diacids to smaller saturated acids. Ozonolysis of oleic and linoleic acid is shown to contribute to activation of particles to cloud droplets (Broekhuizen et al, 2005).…”

Section: Chemical Ageing Of Aerosolsmentioning

confidence: 99%

Organic aerosol and global climate modelling: a review

et al. 2005

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Abstract. The present paper reviews existing knowledge with regard to Organic Aerosol (OA) of importance for global climate modelling and defines critical gaps needed to reduce the involved uncertainties. All pieces required for the representation of OA in a global climate model are sketched out with special attention to Secondary Organic Aerosol (SOA): The emission estimates of primary carbonaceous particles and SOA precursor gases are summarized. The up-to-date understanding of the chemical formation and transformation of condensable organic material is outlined. Knowledge on the hygroscopicity of OA and measurements of optical properties of the organic aerosol constituents are summarized. The mechanisms of interactions of OA with clouds and dry and wet removal processes parameterisations in global models are outlined. This information is synthesized to provide a continuous analysis of the flow from the emitted material to the atmosphere up to the point of the climate impact of the produced organic aerosol. The sources of uncertainties at each step of this process are highlighted as areas that require further studies.

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Section: Chemical Ageing Of Aerosolsmentioning

confidence: 99%

Organic aerosol and global climate modelling: a review

et al. 2005

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“…It is hypothesized to account for the anomalous CO and CO 2 levels found in some Greenland ice core records, which exceed those in contemporaneous Antarctic records by up to 130 ppbv and 20 ppmv, respectively (Haan and Raynaud, 1998;Tschumi and Stauffer, 2000). A comparison of the organic content in both polar ice caps shows that the Greenland ice cores are enriched by the organic aerosol released in major boreal forest fires during the last two millennia (Gayley and Ram, 1985;Kawamura et al, 1995;Desideri et al, 1998;Savarino and Legrand, 1998). Hoffmann and coworkers found that the photodegradation of dissolved organic matter trapped in ice cores by ultraviolet Cerenkov radiation from cosmic muons can account for the anomalous CO and CO 2 levels, and the correlation between them (Colussi and Hoffmann, 2003;Guzman et al, 2007;Guzman, 2007).…”

Section: Photophysics and Photochemistrymentioning

confidence: 99%

Organics in environmental ices: sources, chemistry, and impacts

et al. 2012

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Abstract. The physical, chemical, and biological processes involving organics in ice in the environment impact a number of atmospheric and biogeochemical cycles. Organic material in snow or ice may be biological in origin, deposited from aerosols or atmospheric gases, or formed chemically in situ. In this manuscript, we review the current state of knowledge regarding the sources, properties, and chemistry of organic materials in environmental ices. Several outstanding questions remain to be resolved and fundamental data gathered before an accurate model of transformations and transport of organic species in the cryosphere will be possible. For example, more information is needed regarding the quantitative impacts of chemical and biological processes, ice morphology, and snow formation on the fate of organic material in cold regions. Interdisciplinary work at the interfaces of chemistry, physics and biology is needed in order to fully characterize the nature and evolution of organics in the cryosphere and predict the effects of climate change on the Earth's carbon cycle.

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“…There are gaps in the enrichment time series because of this criterion (Figure 13) Relative humidity is raised from 5% (prevailing humidity during observation) to ambient arctic relative humidity. It is likely that particulate Br and associated soluble organic aerosols [Kawamura et al, 1995] are being formed and depositing on all particles according to the surface area distribution (Figures 1 and 11). The fact that a correlation exists only for 0.6-1.0/•m ESD dry aerosol indicates that this size range is the only one in which substantive changes in the particle number distribution are occurring.…”

Section: Comparison Of Denuder and High-volume Sampler Particulate Mementioning

confidence: 99%

Physical and chemical characteristics of aerosols at Spitsbergen in the spring of 1996

Staebler¹,

Toom-Sauntry²,

Barrie³

et al. 1999

J. Geophys. Res.

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>0.065/•m) ranged from 10 to 922 cm-with an average of 270 cm-. Mixing ratios of particulate Br-compounds were observed to be anticorrelated with that of ozone, increasing markedly when the ozone mixing ratio was <10 nmol/mol. There was no obvious dependence of the ratio of gas to particle Br-on ozone mixing ratio. Observations suggested that during ozone depletion events the number concentration of particles increased in the 1.0 to 1.4/•m ESD diameter range (ambient relative humidity). IntroductionThe observations reported here were collected as part of the second field campaign of the Arctic Tropospheric Ozone Chemistry study in spring 1996 (ARCTOC'96). The study was undertaken to shed more light on the processes involved in the episodic depletion of tropospheric ozone in the Arctic spring. Denuder measurements have proven to be valuable in determining the partitioning of semi-volatile compounds of bromine and nitrogen between particulate and gaseous phases [Bartie et al., 1994a;Li, 1994]. This information is essential in diagnosing heterogeneous reactions involved in the ozone depletion process, such as those that recycle reactive halogens and nitrogen compounds. In this study, measurements were undertaken to characterize physical and chemical aerosol properties relevant to their role in ozone depletion chemistry at Ny •lesund. This paper presents and discusses the results. 5515

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Production of dicarboxylic acids in the Arctic atmosphere at polar sunrise

Cited by 78 publications

References 22 publications

Organic aerosol and global climate modelling: a review

Organic aerosol and global climate modelling: a review

Organics in environmental ices: sources, chemistry, and impacts

Physical and chemical characteristics of aerosols at Spitsbergen in the spring of 1996

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