基于探空的武夷山区域0~6 km臭氧变化天气成因分析  

Weather Causes of 0-6 km Ozone Variation in the Wuyishan Region:An Analysis Based on Radiosonde Observations

作　　者：邓慧颖 黄金洪 赵芮 蒋冬升 王宏[1,2,5,7] DENG Huiying;HUANG Jinhong;ZHAO Rui;JIANG Dongsheng;WANG Hong(Key Laboratory of Straits Severe Weather,China Meteorological Administration/Fujian Key Laboratory of Severe Weather,Fuzhou 350007,China;Wuyi Mountain National Meteorological Observation Station,Wuyishan,Fujian 354300,China;Nanping Meteorological Bureau,Nanping,Fujian 354200,China;Shaowu Meteorological Bureau,Nanping,Fujian 354000,China;Fujian Institute of Meteorological Science,Fuzhou 350007,China;Fujian Environmental Monitoring Central Station,Fuzhou 350003,China;Xiamen Key Laboratory of Straits Meteorology,Xiamen,Fujian 361012,China)

机构地区：[1]中国气象局海峡灾害天气重点开放实验室/福建省灾害天气重点实验室,福建福州350007 [2]武夷山国家气候观象台,福建武夷山354300 [3]南平市气象局,福建南平354200 [4]邵武市气象局,福建南平354000 [5]福建省气象科学研究所,福建福州350007 [6]福建省环境监测中心站,福建福州350003 [7]厦门市海峡气象开放重点实验室,福建厦门361012

出　　处：《热带气象学报》2024年第5期801-810,共10页Journal of Tropical Meteorology

基　　金：国家自然科学基金重点项目(U22A20578);福建省自然科学基金(2021J01453、2021J01463、2023J011332);华东区域气象科技协同创新基金合作项目(QYHZ202313);福建省气象局基层科技专项(2023J06)共同资助。

摘　　要：基于2022年福建省武夷山区域邵武站O_(3)探空观测51次科学试验,分析该区域对流层中下层(0~6 km)O_(3)的季节分布和O_(3)体积混合比(OVMR)变化趋势,探究O_(3)柱浓度(COA)排名前5和后5个例的大气环流形势、诊断物理量及垂直廓线的差异。结果表明:1.5 km以下OVMR春季>秋季>夏季>冬季,1.5 km以上OVMR呈现春季最大,夏季最低,除了秋季,其他季节均呈现随高度增加的趋势;0~6 km排名前5的个例有3个发生在4—5月,主导天气形势与风场为冷高压前偏北或高压底部偏东气流控制,2个发生在9月,为副热带高压和台风外围的下沉气流共同影响;且均表现出对流层中下层大气层结稳定,空气干燥,湿层很薄,存在明显的下沉气流,对流抑制能力强,低层为偏东风,风速在4~8 m·s^(-1)之间。排名后5个例的发生月份、天气形势、诊断物理量等与排名前5个例的有明显的差异。Based on data from 51 ozone(O_(3))sounding observations at the Shaowu Station in the Wuyishan region in 2022,this study analyzed the seasonal distribution of O_(3) in the middle and lower troposphere(0-6 km)and the variation trend of ozone volume mixing ratio(OVMR)in this region.We also explored differences in the atmospheric circulation situation,diagnostic physical quantities,and vertical profiles of 10 cases with column ozone amount(COA)ranking in the top 5 and bottom 5.The results show that the seasonal values of OVMR below the 1.5 km altitude peaks in spring,followed by autumn,summer,and winter,while OVMR above 1.5 km was highest in spring and lowest in summer.Except for autumn,the seasonal distribution of OVMR above 1.5 km showed an increasing trend with height in all seasons.Dominated by the northward flow before the cold high pressure or the easterly flow at the bottom of the high pressure,three of the top 5 cases with COA in the 0-6 km occurred from April to May.The other two cases occurred in September,jointly influenced by the subtropical high and the sinking airflow around the periphery of typhoons.In all 5 cases,stable atmospheric structure was observed in the middle and lower layers of the troposphere.The air was dry with a thin wet layer.Obvious sinking airflow strongly suppressed convection suppression.There were easterly winds in the lower layers with wind speeds ranging from 4-8 m·s^(-1).Significant differences were observed in the occurrence months,weather conditions,and diagnostic physical quantities between the last 5 cases and the top 5 cases.

关 键 词：O_(3)探空观测 COA OVMR 大气廓线特征 武夷山区域 

分 类 号：X16[环境科学与工程—环境科学]