江蘇臭氧污染特征及其與氣象因子的關(guān)系

doi:10.3969/2018jms.0065

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江蘇臭氧污染特征及其與氣象因子的關(guān)系
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                        10.3969/2018jms.0065
                    
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中圖分類(lèi)號(hào):X515
基金項(xiàng)目:國(guó)家重點(diǎn)研發(fā)計(jì)劃（2016YFC0201901；2016YFC0201903）；國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目（91544229；91544231）；江蘇省政府333項(xiàng)目（B）RA2016565）；江蘇省局青年基金（Q201605）；國(guó)家自然基金資助項(xiàng)目（41575010）

The characteristics of ozone pollution and its relationship with meteorological factors in Jiangsu

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本文利用2013-2017年江蘇70個(gè)環(huán)境監(jiān)測(cè)站資料和13個(gè)國(guó)家氣象觀測(cè)站常規(guī)觀測(cè)資料，研究江蘇臭氧污染特征及其與氣象因子的關(guān)系。結(jié)果表明：江蘇臭氧質(zhì)量濃度和超標(biāo)率逐年增長(zhǎng)，其空間分布特征由東部沿海城市大于西部?jī)?nèi)陸城市逐漸轉(zhuǎn)為東西部城市差異不明顯，南部城市超標(biāo)率總體高于北部；4-9月臭氧質(zhì)量濃度處于較高水平，夏季超標(biāo)占一半以上；日變化呈"單峰單谷"型，15時(shí)（北京時(shí)間）前后超標(biāo)率最大，O_{3-8 h}較O_{3-1 h}峰值推后3-4 h；O₃對(duì)空氣質(zhì)量不達(dá)標(biāo)的貢獻(xiàn)率呈逐年上升趨勢(shì)；臭氧質(zhì)量濃度與顆粒物和前體物NO_x日變化呈反相關(guān)，且存在"周末效應(yīng)"。江蘇地區(qū)臭氧質(zhì)量濃度總體與氣溫正相關(guān)，相對(duì)濕度負(fù)相關(guān)，氣溫高于25℃、相對(duì)濕度30%~50%區(qū)間、風(fēng)速低于4 m·s^-1以下易出現(xiàn)高濃度臭氧；蘇南的城市主要在東南風(fēng)向?qū)?yīng)較高的值，而蘇北城市多在西南風(fēng)向?qū)?yīng)的較高臭氧質(zhì)量濃度值。

Abstract:

The characteristics of ozone pollution and its relationship with meteorological factors were studied by using the data of 70 environmental monitoring stations and the routine observation data of 13 national meteorological stations in Jiangsu province from 2013 to 2017. Results showed that the ozone concentration and the over standard rate increased year by year in Jiangsu. The concentration space distribution was no obvious difference between the east and west, and the southern city of over standard rate was higher than that of northern. The ozone concentration was at a high level from April to September, with over half of the over standard rate in summer. The daily variation was "single peak single valley" type, with the highest rate at 15:00 BST, and the O_{3-8 h} was 3-4 hours after the peak of O_{3-1 h}. The contribution rate of O₃ to air quality was increasing year by year. The concentration of ozone was negatively correlated with particulate matter and precursor (NO_x) and had a "weekend effect". Ozone concentration was overall positively related to the temperature, and negatively related to relative humidity in Jiangsu region. High concentrations of ozone were likely to occur with the temperature higher than 25℃, relative humidity 30%-50% and the wind speed less than 4 m·s^-1. Cities in southern Jiangsu mainly have higher values in the southeast wind direction, while cities in northern Jiangsu have higher ozone concentrations in the southwest wind direction.

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嚴(yán)文蓮,劉端陽(yáng),康志明,謝真珍,孫燕.江蘇臭氧污染特征及其與氣象因子的關(guān)系.氣象科學(xué),2019,39(4):477-487 YAN Wenlian, LIU Duanyang, KANG Zhiming, XIE Zhenzhen, SUN Yan. The characteristics of ozone pollution and its relationship with meteorological factors in Jiangsu. Journal of the Meteorological Sciences,2019,39(4):477-487

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收稿日期:2018-04-02
最后修改日期:2018-06-05
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在線發(fā)布日期: 2019-08-31
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