环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2015年
2期
17-21
,共5页
曲雅微%王体健%马超群%程鲁尧%党瑞君
麯雅微%王體健%馬超群%程魯堯%黨瑞君
곡아미%왕체건%마초군%정로요%당서군
灰霾%气溶胶%水溶性离子%黑碳%辐射强迫%南京
灰霾%氣溶膠%水溶性離子%黑碳%輻射彊迫%南京
회매%기용효%수용성리자%흑탄%복사강박%남경
Haze%Aerosol%Water soluble particles%Black carbon aerosol%Radiative forcing%Nanjing
利用2013年6月—12月灰霾天气期间南京城郊气溶胶采样结果,研究气溶胶中水溶性离子的特征和相关性;结合同期城区的大气成分逐时观测资料,分析黑碳的日变化及其与气态污染物的关系;运用光学参量计算模型(OPAC)和辐射传输模型(TUV)研究气溶胶的光学特性及辐射强迫。结果表明:发生灰霾天气时南京城郊主要大气污染物是细颗粒,其中 SO2-4与 NO -3是最主要的水溶性无机盐离子,NO -3/SO2-4质量比较高,呈现硫酸盐和硝酸盐混合型污染特征。黑碳浓度具有明显的日变化特征,呈双峰型结构。灰霾期间硫酸盐气溶胶在大气层顶和地面造成的平均辐射强迫分别为-10.6 W/m2和-10.8 W/m2,黑碳气溶胶在正午大气层顶和地面造成的平均辐射强迫分别为9.12 W/m2和-29.77 W/m2。
利用2013年6月—12月灰霾天氣期間南京城郊氣溶膠採樣結果,研究氣溶膠中水溶性離子的特徵和相關性;結閤同期城區的大氣成分逐時觀測資料,分析黑碳的日變化及其與氣態汙染物的關繫;運用光學參量計算模型(OPAC)和輻射傳輸模型(TUV)研究氣溶膠的光學特性及輻射彊迫。結果錶明:髮生灰霾天氣時南京城郊主要大氣汙染物是細顆粒,其中 SO2-4與 NO -3是最主要的水溶性無機鹽離子,NO -3/SO2-4質量比較高,呈現硫痠鹽和硝痠鹽混閤型汙染特徵。黑碳濃度具有明顯的日變化特徵,呈雙峰型結構。灰霾期間硫痠鹽氣溶膠在大氣層頂和地麵造成的平均輻射彊迫分彆為-10.6 W/m2和-10.8 W/m2,黑碳氣溶膠在正午大氣層頂和地麵造成的平均輻射彊迫分彆為9.12 W/m2和-29.77 W/m2。
이용2013년6월—12월회매천기기간남경성교기용효채양결과,연구기용효중수용성리자적특정화상관성;결합동기성구적대기성분축시관측자료,분석흑탄적일변화급기여기태오염물적관계;운용광학삼량계산모형(OPAC)화복사전수모형(TUV)연구기용효적광학특성급복사강박。결과표명:발생회매천기시남경성교주요대기오염물시세과립,기중 SO2-4여 NO -3시최주요적수용성무궤염리자,NO -3/SO2-4질량비교고,정현류산염화초산염혼합형오염특정。흑탄농도구유명현적일변화특정,정쌍봉형결구。회매기간류산염기용효재대기층정화지면조성적평균복사강박분별위-10.6 W/m2화-10.8 W/m2,흑탄기용효재정오대기층정화지면조성적평균복사강박분별위9.12 W/m2화-29.77 W/m2。
This study analyzed the characteristics of water soluble particles sampled during haze events in the suburb of Nanjing from June 201 3 to December 201 3,studied the daily variation of black carbon (BC)and the correlation between BC and gaseous pollutants by using the hourly data collected during the same period and estimated the optical properties and radiative forcing with OPAC (Optical Properties of Aerosols and Clouds)and TUV (Tropospheric Ultraviolet and Visible radiation model).The investigations showed that PM2.5 was the main contributor to haze of suburb in Nanjing.SO2 -4 and NO -3 was the most important inorganic water-soluble ions, and the value of NO -3 /SO2 -4 was high,which indicated a mixed type of pollution.The daily variation of the con-centrations of BC sketched a curve with two peaks.During the haze pollution,sulfate aerosol had an average ra-diative forcing of -1 0.8 W/m2 at the surface and -1 0.6 W/m2 at the top of the atmosphere.BC had an aver-age radiative forcing of -29.77 W/m2 at the surface and 9.1 2 W/m2 at the top of the atmosphere at noon.