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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (24): 222-227.doi: 10.11924/j.issn.1000-6850.casb14120092

所属专题： 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

高原边坡回流雾气候特征及影响因素分析

张洪芬,路亚奇,杨丽杰,焦美龄   

  1. (甘肃省庆阳市气象局,甘肃西峰 745000）
  • 收稿日期:2014-12-15 修回日期:2015-07-30 接受日期:2015-04-24 出版日期:2015-08-26 发布日期:2015-08-26
  • 通讯作者: 张洪芬
  • 基金资助:
    甘肃省气象局科技项目“陇东大雾天气定量化预报指标”(2014-08)。

Analysis of Plateau Slope Backflow Fog’s Climate Characteristics and Influencing Factors in Qingyang

Zhang Hongfen, Lu Yaqi, Yang Lijie, Jiao Meiling   

  1. (Qingyang Meteorological Bureau Gansu, Xifeng Gansu 745000)
  • Received:2014-12-15 Revised:2015-07-30 Accepted:2015-04-24 Online:2015-08-26 Published:2015-08-26

PDF (PC)

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摘要： 为揭示庆阳市大雾发生发展机理及成因，以便进一步提高大雾预报准确率，利用庆阳市2007—2013年7年间发生大雾的地面及高低空资料，对其天气气候特征及影响因素进行分析。研究发现：庆阳市雾大多是回流雾，且最多发生在东南部的宁县，最适宜大雾发生的季节是夏秋季，主要集中在7—11月；庆阳市大雾的发生具有连续性、持续性及多局地性、少区域性的特点；春夏季与秋冬季发生的大雾在生消的时间上有明显的不同；湿度条件是大雾发生发展的决定性因素；大雾与温度有较弱的负相关关系；大雾发生时地面风多以弱（风速≤4 m/s）的南风或偏南风为主，有一定的垂直风切变；在地面形式场上，庆阳市大雾基本上发生在稳定、较弱或者变性的高压形势下，具有回流雾的特征。

关键词: 柚子, 柚子, 红枣, 发酵, 酸奶

Abstract: In order to reveal the developmental mechanism of fog in Qingyang, and further improve the forecast accuracy of fog, using the fog data of Qingyang City from 2007 to 2013, the author analyzed its climate characteristics and influencing factors. The results were as follows: the fog in Qingyang was mostly caused by backflow, and mostly occurred in Ningxian of southeastern Qingyang, the optimum season for fog occurrence was summer and autumn, mainly from July to November. Qingyang’s fog had the characteristics of continuity, sustainability, and was more local and less regional. The time of the fog’s occurrence and lift in spring and summer was different from those in autumn and winter. Humidity was the decisive factor, the temperature and fog had weakly negative correlation. Fog occurred on the ground by weak south wind (wind speed≤4 m/s), and had a certain vertical wind shear. On the ground form field, Qingyang’s fog occurred in a stable, weak or degenerative high-pressure situation, so it had the characteristic of plateau slope backflow fog.