| 基于能见度数据分析的气溶胶吸湿增长特征研究 |
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| 引用本文： | 甘启航,何南腾,沈子宣,邹嘉南.基于能见度数据分析的气溶胶吸湿增长特征研究[J].气象研究与应用,2021,42(1):27-33. |
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| 作者姓名： | 甘启航 何南腾 沈子宣 邹嘉南 |
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| 作者单位： | 南京信息工程大学大气科学与环境气象国家级实验教学示范中心、气象灾害预报预警与评估协同创新中心、中国气象局气溶胶—云—降水重点开放实验室,南京210044;贵港市气象局,广西贵港537100;南京信息工程大学大气科学与环境气象国家级实验教学示范中心、气象灾害预报预警与评估协同创新中心、中国气象局气溶胶—云—降水重点开放实验室,南京210044;南京信息工程大学大气科学与环境气象国家级实验教学示范中心、气象灾害预报预警与评估协同创新中心、中国气象局气溶胶—云—降水重点开放实验室,南京210044;中国气象局云雾物理环境重点开放实验室,北京100081 |
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| 基金项目： | 国家自然科学基金(41505136);中国气象局云雾物理环境重点开放实验室开放课题(2017Z016);南京信息工程大学科研启动经费(2019R079);2019年度大气与环境实验教学中心开放课题(KFKT2019G01)。 |
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| 摘 要： | 基于相对湿度、能见度等气象数据,分析气溶胶吸湿增长特性,有助于了解气溶胶对大气环境和区域气候的影响。利用南京地区2016年1—12月、2017年2—12月、2018年1—8月和12月相对湿度和能见度等数据,通过非线性拟合研究气溶胶吸湿增长因子(f(RH))与相对湿度(RH)之间的关系。结果表明,吸湿增长因子在RH值较低(<80%)时,增长率较小;当RH值较高(>80%)时,增长率迅速增大。吸湿增长因子随着月RH值变化而表现出较大差异。此外,当南京地区盛行西风时,高能见度出现的时次较多。f(RH)与PM2.5/PM10成正比,PM2.5/PM10值越高,对应的气溶胶光学吸湿增长因子往往会越高。
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| 关 键 词： | 气溶胶 吸湿增长 能见度 |
Research on the growth characteristics of aerosol moisture absorption based on visibility data analysis |
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| Gan Qihang,He Nanteng,Shen Zixuan,Zou Jianan.Research on the growth characteristics of aerosol moisture absorption based on visibility data analysis[J].Journal of Guangxi Meteorology,2021,42(1):27-33. |
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| Authors: | Gan Qihang He Nanteng Shen Zixuan Zou Jianan |
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| Institution: | (National Experimental Teaching Demonstration Center for Atmospheric Science and Environmental Meteorology,Nanjing University of Information Science and Technology,Collaborative Innovation Center for Forecast and Evaluation of Meteorological Disasters,Key Laboratory of Aerosol-Cloud-Precipitation of China Metcorological Administration,Nanjing Jiangsu 210044;Guigang Meteorological Bureau,Guigang Guangxi 537100;Key Laboratory of Cloud and Fog Physical Environment,China Meteorological Administration,Beijing 100081) |
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| Abstract: | Based on meteorological data such as relative humidity and visibility,analyzing the growth characteristics of aerosols will help to understand the impact of aerosols on the atmospheric environment and regional climate.The relative humidity and visibility data from January to December 2016,February to December2017,January to August as well as December 2018 in Nanjing were used to study the relationship between aerosol moisture absorption growth factor(f(RH))and relative humidity(RH)through nonlinear fitting.The results show that when the RH value was low(<80%),the growth rate of the moisture absorption growth factor was low;when the RH value was high(>80%),the growth rate increased rapidly.The moisture absorption growth factor showed a big difference with the monthly RH value.In addition,when the westerly wind prevailed in Nanjing,high visibility occurred more often.f(RH)was proportional to PM2.5/PM10.The higher the value of PM2.5/PM10,the higher the corresponding aerosol optical moisture absorption growth factor. |
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| Keywords: | aerosol hygroscopic growth visibility |
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