Airborne observation of mixing across the entrainment zone during PARADE 2011
Airborne observation of mixing across the entrainment zone during PARADE 2011
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DOI：
10.5194/acp-16-6011-2016
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发表时间：
2016-01-01
影响因子：
6.3
通讯作者：
Henne, Stephan
中科院分区：
文献类型：
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作者：
Berkes, Florian;Hoor, Peter;Henne, Stephan
本研究介绍了分析的结构和空气质量的低层大气的特点，在现场活动PARADE（PArticles和RAdicals：城市和生物源排放的影响的昼夜观测）在山克莱纳费尔德贝格在西南部德国在2011年夏末。我们分析了无线电探测的气象变量（温度、湿度、压力、风速和风向）测量值和飞机测量的化学示踪物（二氧化碳、臭氧）测量值。我们专注于热力学和动力学特性，控制大气成分的化学分布在边界层。我们发现，示踪剂的CO2和O-3的配置文件的演变表明混合整个逆温层（或夹带区）。这一发现是支持的示踪剂示踪剂的相关性，这是指示混合和示踪剂剖面的关系，从无线电测深推导出的边界层高度的演变的分析。这项研究表明，在一般情况下，特别是示踪剂示踪剂相关方法可以用来确定混合和不可逆的交换过程在逆温层的对流层低层夹带过程的相关性。
This study presents the analysis of the structure and air mass characteristics of the lower atmosphere during the field campaign PARADE (PArticles and RAdicals: Diel observations of the impact of urban and biogenic Emissions) on Mount Kleiner Feldberg in southwestern Germany during late summer 2011. We analysed measurements of meteorological variables (temperature, moisture, pressure, wind speed and direction) from radio soundings and of chemical tracers (carbon dioxide, ozone) from aircraft measurements. We focus on the thermodynamic and dynamic properties that control the chemical distribution of atmospheric constituents in the boundary layer. We show that the evolution of tracer profiles of CO2 and O-3 indicate mixing across the inversion layer (or entrainment zone). This finding is supported by the analysis of tracer-tracer correlations which are indicative for mixing and the relation of tracer profiles in relation to the evolution of the boundary layer height deduced from radio soundings. The study shows the relevance of entrainment processes for the lower troposphere in general and specifically that the tracer-tracer correlation method can be used to identify mixing and irreversible exchange processes across the inversion layer.