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| 渤海气溶胶时空分布研究 | |
| 引用本文： | 马玉娟,赵冬至,刘玉光,杨建洪,顾艳镇.渤海气溶胶时空分布研究[J].海洋与湖沼,2012,43(2):217-223. |
| 作者姓名： | 马玉娟 赵冬至 刘玉光 杨建洪 顾艳镇 |
| 作者单位： | 1. 中国海洋大学海洋环境学院，青岛266100／国家海洋环境监测中心，大连116023 2. 国家海洋环境监测中心,大连,116023 3. 中国海洋大学海洋环境学院,青岛,266100 |
| 基金项目： | 我国近海海洋综合调查与评价专项(908), 908-02-03-01号; 国家重点基础研究规划(973)项目, 973-2007CB411807 号 |
| 摘 要： | 利用2003—2008年在渤海所测的212组气溶胶数据,研究了气溶胶光学厚度(AOT)、浑浊度系数(β)和ngstrm指数α的时空分布规律,并初步探讨了气溶胶特征参数之间的关系。结果表明,在时间分布方面,渤海气溶胶光学厚度、浓度和粒径尺度在一天中的变化比较小,中午AOT较大,10点左右AOT较小。从6月份到9月份,AOT、β和α的范围和均值均呈下降趋势;3月份AOT、β和α均明显小于六、8、9月份的对应值。离岸25km之内的大部分地区,AOT随离岸距离的增大而减小;但25km以外,气溶胶变化没有规律。比较而言,气溶胶AOT和β变化比较一致。浑浊度系数(浓度因子)β比ngstrm指数(尺度因子)α对气溶胶光学厚度AOT的影响更明显,AOT和β的关系可采用一阶线性回归方程表示。 |
| 关 键 词： | 气溶胶光学厚度 浑浊度系数 ngstrm指数 水汽 |
| 收稿时间： | 5/7/2011 12:00:00 AM |
| 修稿时间： | 2012/3/13 0:00:00 |
TEMPORAL AND SPATIAL DISTRIBUTIONS OF AEROSOLS OVER THE BOHAI SEA |
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| MA Yu-Juan,ZHAO Dong-Zhi,LIU Yu-Guang,YANG Jian-Hong and GU Yan-Zhen.TEMPORAL AND SPATIAL DISTRIBUTIONS OF AEROSOLS OVER THE BOHAI SEA[J].Oceanologia Et Limnologia Sinica,2012,43(2):217-223. | |
| Authors: | MA Yu-Juan ZHAO Dong-Zhi LIU Yu-Guang YANG Jian-Hong and GU Yan-Zhen |
| Institution: | College of Physical and Environmental Oceanography, Ocean University of China;National Marine Environmental Monitoring Center;National Marine Environmental Monitoring Center;College of Physical and Environmental Oceanography, Ocean University of China;National Marine Environmental Monitoring Center;College of Physical and Environmental Oceanography, Ocean University of China |
| Abstract: | Aerosol optical thickness(AOT) data between 2003 to 2008 obtained using a ship-based multiband sun photometer were taken to study the temporal and spatial distributions and the influencing factors of AOT,turbidity coefficient(β),and ngstr m exponent(α) over the Bohai Sea.We obtained a total of 212 datasets from eight cruises and two fix-point measurements.There were 72 datasets in 2003,21datasets in 2004,98 datasets in 2005,and 21 datasets in 2008.Intra-day variations of AOT,β,and α were inconspicuous.The mean values and ranges of AOT,β,and α decreased from June to September.The values of AOT,β,and α in June,August and September were larger than those in March due to smog,sandstorm,and ocean moisture.In most areas within 25 km offshore,AOT and β decreased with increasing distance from shore.However,the variation of α did not show a clear trend.Over the Bohai Sea,the influence of β on AOT was more significant than α.The relationship between AOT and β was described by AOT = 2.52×β + 0.07 when α is greater than 0.8,and he relationship became AOT = 1.20×β + 0.16 when α is smaller than 0.8.We classified the aerosols into two types based on whether α was greater than 0.8.The influence of small changes in aerosol particle size on AOT may be ignored for certain types of aerosols. |
| Keywords: | Aerosol optical thickness Turbidity coefficient ngstrm exponent Moisture |
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