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首页> 外文期刊>Atmosphere >Annual Variability of Black Carbon Concentrations Originating from Biomass and Fossil Fuel Combustion for the Suburban Aerosol in Athens, Greece
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Annual Variability of Black Carbon Concentrations Originating from Biomass and Fossil Fuel Combustion for the Suburban Aerosol in Athens, Greece

机译：来自希腊雅典郊区气溶胶的生物质和化石燃料燃烧产生的黑碳浓度的年度变化

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The objective of this work was to assess the yearly contribution of fossil fuel combustion (BC ff ) and wood burning (BC wb ) to equivalent black carbon (eBC) concentrations, in Athens, Greece. Measurements were conducted at a suburban site from March 2013 to February 2014 and included absorption coefficients at seven wavelengths and PM 2.5 chemical composition data for key biomass burning markers, i.e., levoglucosan, potassium (K) and elemental and organic carbon (EC, OC). A well-documented methodology of corrections for aethalometer attenuation coefficients was applied with a resulting annual dataset of derived absorption coefficients for the suburban Athens?￠???? atmospheric aerosol. The Aethalometer model was applied for the source apportionment of eBC. An optimum ????ngstr????m exponent for fossil fuel ( ???± ff ) was found, based on the combined use of the model with levoglucosan data. The measured eBC concentrations were equal to 2.4 ???± 1.0 ????g m ?￠????3 and 1.6 ???± 0.6 ????g m ?￠????3 , during the cold and the warm period respectively. The contribution from wood burning was significantly higher during the cold period (21 ???± 11%, versus 6 ???± 7% in the warm period). BC ff displayed a clear diurnal pattern with a morning peak between 8 and 10 a.m. (during morning rush hour) and a second peak during the evening and night hours, due to the shallowing of the mixing layer. Regression analysis between BC wb concentrations and biomass burning markers (levoglucosan, K and OC/EC ratio) supported the validity of the results.
机译：这项工作的目的是评估希腊雅典的化石燃料燃烧（BC ff）和木材燃烧（BC wb）对当量黑碳（eBC）浓度的年度贡献。从2013年3月至2014年2月在郊区进行了测量，包括七个波长的吸收系数以及关键生物质燃烧标记物（左葡聚糖，钾（K）以及元素碳和有机碳（EC，OC））的PM 2.5化学成分数据。应用了一个有据可查的测速计衰减系数校正方法，并将所得的年度数据导出到雅典郊区的吸收系数中。大气气溶胶。 Aethalometer模型用于eBC的来源分配。根据该模型与左旋葡聚糖数据的组合使用，找到了化石燃料的最佳ΔngstrΔmm指数（±ff）。在寒冷和寒冷的天气中，测得的eBC浓度等于2.4±1.0 gg≤3和1.6±0.6 gg≤3。分别是温暖期。在寒冷时期，木材燃烧的贡献显着更高（21±11％，而在温暖时期为6±7％）。由于混合层变浅，BC ff表现出清晰的昼夜模式，早晨高峰在上午8-10点之间（在早上高峰时间），在傍晚和夜间则是第二高峰。 BC wb浓度和生物质燃烧标志物（左葡聚糖，K和OC / EC比）之间的回归分析支持了该结果的有效性。

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