MARINE AEROSOL FLUXES DETERMINED BY SIMULTANEOUS MEASUREMENTS OF EDDY COVARIANCE AND GRADIENT METHOD

In this paper there are presented results of the aerosol fluxes measurements in near water boundary layer. Measurements were conducted using two micrometeorological methods in the southern Baltic Sea region. The preliminary results of comparison two methods are discus. The eddy covariance (EC) method is shown as a method for the calibration of the gradient method (GM). The reason for proceeding with such calibration is to show that the GM, which is an indirect measuring method, is comparable with a direct method such as the EC. In the EC measurements the condensation particle counter (CPC, measuring range 0.05 – 3 µm with 1 Hz counting speed) and the Research Anemometer (50 Hz measurement speed) were used. For the GM, a Classical Scattering Aerosol Spectrometer was applied (measuring range from 0.5 to 47 µm diameter, within 36 measuring channels). Data from scientific cruises of the r/v Oceania in the southern Baltic Sea between 2008 and 2011 were analyzed.

本文呈现了近水面边界层气溶胶通量的测量结果。本次测量于波罗的海南部海域开展，采用了两种微气象学方法。文中还对两种方法的初步对比结果进行了讨论。研究表明，涡度协方差方法（Eddy Covariance, EC）可用于梯度法（Gradient Method, GM）的校准。开展此类校准的目的在于证实：作为间接测量方法的梯度法，可与涡度协方差这类直接测量方法具备可比性。涡度协方差测量中，使用了冷凝粒子计数器（Condensation Particle Counter, CPC，测量范围0.05–3 µm，计数速率1 Hz）与研究型风速仪（测量速率50 Hz）。梯度法测量则采用了经典散射气溶胶光谱仪，其测量粒径范围为0.5至47 µm，共包含36个测量通道。本次分析纳入了科考船‘大洋洲号’（r/v Oceania）于2008至2011年间在波罗的海南部海域开展的科考航次数据。