Sea Salt Aerosol, Atmospheric Radon and Meteorological Observations in the Western South Atlantic Ocean (February 1981).
Sea Salt Aerosol, Atmospheric Radon and Meteorological Observations in the Western South Atlantic Ocean (February 1981).
复制标题
南大西洋西部的海盐气溶胶、大气氡和气象观测（1981 年 2 月）。
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
R. E. Larson
中科院分区：
文献类型：
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作者：
F. Lepple;D. Bressan;J. B. Hoover;R. E. Larson
摘要：1981年2月3日至19日，美国海军海耶斯号在南大西洋西部16米高度上对海盐气溶胶浓度进行了测量。气溶胶样品收集使用NRL设计的，自动采样器耦合到一个可编程的环境监测系统。还几乎沿着巡航轨迹对风速和风向、气温和水温、相对湿度、气压和大气氡浓度进行了同时测量。强调海盐气溶胶和当地风速的天气测量之间的函数关系表明，这两个参数之间的整体相关性较差（249个数据点集的r约为0.3），然而，当数据被分离成离散的气象和/或海洋事件，大多数短期相关性显着改善。在这一地区的南大西洋，我们属性的盐气溶胶和风速的滞后，凝结过程和湍流边界层的结构变化的影响天气测量之间的整体相关性低。在这次航行中，海面温度变化很大，似乎直接影响到大气盐负荷，在许多情况下，无论风速如何。瞬时海盐气溶胶值的确定性预测将需要改进表征海洋边界层的实时方法。或者，模拟海盐气溶胶浓度可能是最实际的影响，使用统计方法。
Abstract : The concentration of sea salt aerosol was measured aboard the USNS HAYES at 16m height in the western South Atlantic Ocean from February 3-19, 1981. Aerosol samples were collected using a NRL-designed, automated sampler coupled to a programmable environmental monitoring system. Simultaneous measurements of wind speed and direction, air and water temperature, relative humidity, barometric pressure and atmospheric radon concentration were also made nearly continuously along the cruise track. Emphasis on functional relationships between synoptic measurements of sea salt aerosol and local wind speed showed the overall correlation between these two parameters to be poor (r approx 0.3 for 249 data point sets), However, when the data is separated into discrete meteorological and/or oceanographic events, most short term correlations are significantly improved. In this region of the South Atlantic Ocean, we attribute the low overall correlation between synoptic measurements of salt aerosol and wind speed to the effects of hysteresis, condensation processes and varying structure of the turbulent boundary layer. The sea surface temperature varied widely during this cruise and seemed to directly influence the atmospheric salt load, regardless of wind speed in many cases. Deterministic predictions of instantaneous sea salt aerosol values will require improved real-time methods for characterizing the marine boundary layer. Alternatively, modelling sea salt aerosol concentrations might be most practically effected using a statistical approach.