主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2017, Vol. 33 ›› Issue (3): 45-51.doi: 10.3969/j.issn.1673-503X.2017.03.006

• 论文 • 上一篇    下一篇

2015年宁波地区两次灰霾天气过程气溶胶垂直分布特征分析

黄思源1, 王界2, 全彩峰3   

  1. 1. 宁波市气象网络与装备保障中心, 浙江 宁波 315012;
    2. 无锡中科光电技术有限公司, 江苏 无锡 214135;
    3. 宁波市镇海区气象局, 浙江 宁波 315202
  • 收稿日期:2016-06-07 修回日期:2016-09-05 出版日期:2017-06-30 发布日期:2017-06-30
  • 作者简介:黄思源,男,1958年生,正研级高级工程师,主要从事气象探测技术保障研究,E-mail:hsy@cnluye.com。
  • 基金资助:
    国家火炬计划（2014GH710703）、江苏省科技成果转化专项资金（BA2015010）和国家重点研发计划（JFYS2016ZY01002708）共同资助。

Vertical distributions of aerosol during two haze events in 2015 over Ningbo,Zhejiang province

HUANG Si-yuan1, WANG Jie2, QUAN Cai-feng3   

  1. 1. Meteorological Network and Equipment Support Center of Ningbo, Ningbo 315012, China;
    2. Wuxi CAS Photonics Co. Ltd, Wuxi 214135, China;
    3. Meteorological Service in Zhenhai District of Ningbo, Ningbo 315202, China
  • Received:2016-06-07 Revised:2016-09-05 Online:2017-06-30 Published:2017-06-30

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被引次数

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摘要： 利用2015年2月12—18日宁波市镇海区和奉化市双波段偏振气溶胶激光雷达的观测资料，结合常规地面气象观测资料、风廓线雷达观测资料和大气成分监测资料，分析了2月12—14日和16—18日宁波地区两次灰霾天气过程的气溶胶垂直分布特征，并通过532 nm和355 nm双波段偏振激光雷达的消光系数与退偏振度的垂直分布及随时间的变化分析两次灰霾天气过程形成的机理。结果表明：2015年2月宁波地区的两次灰霾天气过程，一次过程是由本地污染物的积聚所致，另一次过程是受外来污染物的跨界输送沉降与近地面污染物耦合所致。宁波地区本地污染颗粒物主要分布在1.0 km以下，外来污染颗粒物主要分布在1.0—2.0 km之间。风廓线雷达观测的高空风场变化与激光雷达反映的颗粒物分布特征具有较好的对应关系，可以进一步对2015年2月宁波地区两次灰霾天气过程的成因进行分析。本文利用多台激光雷达组网对高空颗粒物进行观测，改变了以往近地面观测的局限性和单站点探空的单一性，为定量分析污染物的输送强度和颗粒物的时空演变特征提供了良好的技术方法，可进一步提高灰霾天气的监测预警能力。

关键词: 灰霾, 气溶胶, AQI, 消光系数, 退偏振度, 风廓线

Abstract: Observation data from the polarized-LiDARs of Zhenhai district and Fenghua,as well as conventional surface meteorological data,wind profile radar data and atmospheric composition data were used to analyze the vertical distribution characteristics of aerosol over Ningbo during two haze events,occurring on February 12-14 and 16-18,2015,respectively.Their formation mechanisms were further evaluated by means of vertical-temporal variations of extinction and depolarized coefficients at 532 nm and 355 nm.The results show that the first event was caused by local pollutants accumulation,whereas the second event was caused by the transboundary transport,deposition and near-surface mixing of pollutants.Particulate matters appeared below 1 km and between 1-2 km during the two events,respectively.High-level wind fields from wind profile radars were in good agreement with particulate matter characteristics observed by polarized-LiDARs,which can further interpret the different formation mechanisms of the two events.Using LiDAR-network technology to observe high-level particulate matters altered the limitation of near surface observations and single site soundings,providing reasonable technological methods for the quantitative analysis of pollutant transport intensities and spatial-temporal variations.Through LiDAR network,monitoring and early warning of haze events will be further promoted.

Key words: Haze, Aerosol, AQI, Extinction coefficients, Depolarization coefficients, Wind profile

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