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| 珠江三角洲典型灰霾天气过程和清洁过程近地层流场的EOF对比分析 | |
| 引用本文： | 廖国莲,曾鹏,程鹏.珠江三角洲典型灰霾天气过程和清洁过程近地层流场的EOF对比分析[J].气象研究与应用,2008,29(4):23-25. |
| 作者姓名： | 廖国莲 曾鹏 程鹏 |
| 作者单位： | 1. 广西气候中心,南宁,530022 2. 广西气象科技服务中心,南宁,530022 3. 广西人工影响天气办公室,南宁,530022 |
| 摘 要： | 利用广东省466个地面自动气象站资料、广州气象站常规气象资料及珠江三角洲4个主要城市的PM 10浓度等资料,通过矢量EOF方法,对选出的珠江三角洲典型灰霾天气过程(2004年1月4~10日)和清洁过程(2005年11月15~21日)的近地层流场进行对比分析。分析表明典型灰霾天气过程第二、三模态有非常明显的日变化特征,受局地中小尺度环流系统影响,污染物局限在当地,出现严重的灰霾天气;而清洁过程与强平流输送有关,主要受大尺度环流系统影响。 |
| 关 键 词： | 灰霾 近地层流场 经验正交函数(EOF) 珠江三角洲 |
EOF Contrast Analysis on Surface Flow Fields during Serious Haze Process and Cleaning Process in Pearl River Delta |
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| Liao Guo-lian,Zeng Peng,Cheng Peng.EOF Contrast Analysis on Surface Flow Fields during Serious Haze Process and Cleaning Process in Pearl River Delta[J].Journal of Guangxi Meteorology,2008,29(4):23-25. | |
| Authors: | Liao Guo-lian Zeng Peng Cheng Peng |
| Institution: | Liao Guo-lian1,Zeng Peng2,Cheng Peng3 |
| Abstract: | Based on the data provided by 466 surface automatic weather stations over Guangdong province,Guangzhou conventional weather station,and PM10 daily average concentration data frong four cities of Pearl River Delta,the surface flow fields during the typical serious haze process and cleaning process had been analyzed by using EOF(empirical orthogonal function).The analysis shows that the second and third modes of the serious haze process have obvious diurnal variation.Influenced by local meso-scale and micro-scale circulation systems,contamination is localized and leads to the serious haze weather.The cleaning processes are related to strong advection transport.and influenced by macro-scale circulation systems. |
| Keywords: | smog surface flow fields EOF Pearl River Delta |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |