粤港澳大湾区PBL SO2的遥感监测研究  

Monitoring of SO Using Satellite Remote Sensing over Guangdong-Hong Kong-Macao Greater Bay Area,China

作　　者：肖钟湧 陈颖锋 陈坰烽 施益强[1,2] 刘珊红[1,2] 谢静晗 谢先全 XIAO Zhongyong;CHEN Yingfeng;CHEN Jiongfeng;SHI Yiqiang;LIU Shanhong;XIE Jinghan;XIE Xianquan(College of Harbor and Environmental Engineering,Jimei University,Xiamen 361021,China;National Geographic Conditions Monitoring Research Center,Jimei University,Xiamen 361021,China)

机构地区：[1]集美大学港口与环境工程学院,福建厦门361021 [2]集美大学地理国情监测研究中心,福建厦门361021

出　　处：《环境科学与技术》2020年第5期74-81,共8页Environmental Science & Technology

基　　金：福建省自然科学基金计划资助项目(2017J01659);福建省中青年教师教育科研项目(JAT160253);潘金龙集美大学学科建设基金(ZC2013022);李尚大集美大学学科建设基金(ZC2016001)。

摘　　要：利用Aura卫星搭载的臭氧观测仪反演的大气边界层SO2(PBL SO2)柱含量数据,分析了自2005年以来粤港澳大湾区PBL SO2柱含量的空间分布特征、变化趋势及其影响的原因。结果显示了粤港澳大湾区PBL SO2柱含量2005-2018年呈减少的趋势,2005年年平均PBL SO2柱含量为0.551 DU,2018年为0.431 DU,减少了0.12 DU,约为21.8%。最小值出现在2013年4月,区域月平均PBL SO2柱含量为(0.316±0.135)DU。在高值秋冬季节PBL SO2呈现较大的下降趋势;在低值春夏季节PBL SO2保持着相近的水平,大约在0.380DU处上下波动。小波系数显示了PBL SO2的变化在10个月的尺度水平上存在明显的周期变化。粤港澳大湾区PBL SO2月变化在时间和空间上存在明显的差异。最小值和最大值分别出现在3月和10月,多年平均值大约分别为(0.404±0.053)DU和(0.565±0.089)DU,10月份整个区域的PBL SO2保持在最高的水平。波动最大出现在7月,变异系数为0.19;而在2月波动最小,变异系数约为0.10。粤港澳大湾区SO2污染严重的地区出现在中部,多年平均PBL SO2柱含量值可达0.600 DU,同时年际间的波动较大;PBL SO2较低的区域主要在东部的惠州市和北部的肇庆,2005-2018年平均的PBL SO2约为0.400 DU,年际间的波动较小。2005-2018年PBL SO2的变化趋势在不同空间上呈现明显差异,变化范围为-0.450~0.290 DU,百分比范围为-55%~65%。PBL SO2出现增长的地区主要是在低值区;在高值区,PBL SO2表现出较大的减少,减少最多的是中山市、广州市和佛山市的交界处,减少了约0.450 DU,约为55%。The spatial distribution and variation trend of PBL SO2 over Guangdong-Hong Kong-Macao Greater Bay Area(GBA)was analyzed using the satellite retrieved data from the Ozone Monitoring Instrument(OMI)sensor,and the reasons for these characteristics were also analyzed.The results showed that the PBL SO2 decreased from 2005 to 2018 over GBA.The average annual PBL SO2 in 2005 was 0.551 DU,and 0.431 DU in 2018,which decreased by 0.12 DU,about 21.8%.The minimum appeared in April 2013,and the regional monthly average PBL SO2 was 0.316±0.135 DU.The PBL SO2 showed a large downward trend in the high value of autumn and winter,while maintains a similar level at low value of spring and summer,fluctuating around 0.380 DU.The wavelet coefficients showed that the PBL SO2 changes have significant period at the 10 months scale level.There was a significant difference in temporal and spatial variation of PBL SO2 over GBA.The minimum and maximum values appeared in March and October,and the multi-yearly averages are approximately 0.404±0.053 DU and 0.565±0.089 DU,respectively.The PBL SO2 remained at the highest level in the entire region in October.The most fluctuation occurred in July,with a coefficient of variation of 0.19.In February,the fluctuation was the smallest,with a coefficient of variation of 0.10.The high-value area with severe SO2 pollution mainly occurred in the central region of GBA,such as cities of Guangzhou,Foshan and Zhongshan,the maximum PBL SO2 was up to 0.600 DU,concurrently,the interannual fluctuation was larger.The low-value areas occurred mainly in Zhaoqing City in the north and Huizhou City in the east,the PBL SO2 was about 0.4 DU,and the interannual fluctuation was smaller.The variation trend of PBL SO2 in2005-2018 showed significant differences in different spaces,ranging from-0.450 to 0.290 DU,with a percentage ranging from-55%to 65%.The increased areas occurred mainly in low-value areas,and the areas with large reductions are concentrated in the high-value areas,and the largest reduction of 0.450 DU(55

关 键 词：臭氧观测仪 PBL SO2 变异系数 卫星遥感 粤港澳大湾区 

分 类 号：X511[环境科学与工程—环境工程]