Aerosol optical properties over the midcontinental United States
Aerosol optical properties over the midcontinental United States
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DOI：
10.1029/92jd01088
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发表时间：
1992-11
影响因子：
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通讯作者：
R. Halthore;B. Markham;R. Ferrare;T. Aro
中科院分区：
文献类型：
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作者：
R. Halthore;B. Markham;R. Ferrare;T. Aro
对太阳和天空辐射测量进行了分析，以获得气溶胶的光学厚度和粒度分布等特性。这些测量是作为第一次国际卫星陆地表面气候学计划（ISLSCP）现场实验（FIFE）的一部分，在1987年6月25日至7月14日的第二次密集现场活动（IFC）和1989年7月25日至8月12日的第五次IFC期间在堪萨斯曼哈顿附近的Konza Prairie进行的。与气候学和气象学参数的相关性表明，在1987年的观测期间，两种类型的空气质量占主导地位的地区：一个空气质量具有低光学厚度和低温空气与北风，通常被称为大陆空气，和一个空气质量具有较高的光学厚度和较高的温度空气与南风，我们称之为“海湾空气”。粒度分布显示，在海湾空气中较大尺寸的颗粒占主导地位。由于存在两种截然不同的气团，与相对湿度、比湿度、压力、温度和北极星星天空辐射等参数的相关性揭示了一些有趣的方面。在1989年，大陆和海湾的空气之间不能作出明确的区分;其原因将被讨论。
Solar and sky radiation measurements were analyzed to obtain aerosol properties such as the optical thickness and the size distribution. The measurements were conducted as part of the First International Satellite Land Surface Climatology Project (ISLSCP) Field Experiment (FIFE) during the second intensive field campaign (IFC) from June 25 to July 14, 1987, and the fifth IFC from July 25 to August 12, 1989, on the Konza Prairie near Manhattan, Kansas. Correlations with climatological and meteorological parameters show that during the period of observations in 1987, two types of air masses dominated the area: an air mass with low optical thickness and low temperature air associated with a northerly breeze, commonly referred to as the continental air, and an air mass with a higher optical thickness and higher temperature air associated with a southerly wind which we call “Gulf air.” The size distributions show a predominance of the larger size particles in Gulf air. Because of the presence of two contrasting air masses, correlations with parameters such as relative humidity, specific humidity, pressure, temperature, and North Star sky radiance reveal some interesting aspects. In 1989, clear distinctions between continental and Gulf air cannot be made; the reason for this will be discussed.