典型文献
Measurement of HONO flux using the aerodynamic gradient method over an agricultural field in the Huaihe River Basin,China
文献摘要：
To investigate nitrous acid(HONO)levels and potential HONO sources above crop rotation fields.The HONO fluxes were measured by the aerodynamic gradient(AG)method from 14 December 2019 to 2 January 2020 over an agricultural field in the Huaihe River Basin.The ambient HONO levels were measured at two different heights(0.15 and 1.5 m),showing a typical diurnal cycle with low daytime levels and high nighttime levels.The upward HONO fluxes were mostly observed during the day,whereas deposition dominated at night.The diurnal variation of HONO flux followed solar radiation,with a noontime maximum of 0.2 nmol/(m2·sec).The average upward HONO flux of 0.06±0.17 nmol/(m2·sec)indicated that the agricultural field was a net source for atmospheric HONO.The higher HONO/NO2 ra-tio and NO2-to-HONO conversion rate close to the surface suggested that nocturnal HONO was formed and released near the ground.The unknown HONO source was derived from the daytime HONO budget analysis,with an average strength of 0.31 ppbV/hr at noontime.The surface HONO flux,which was highly correlated with the photolysis frequency J(NO2)(R2 = 0.925)and the product of J(NO2)×NO2(R2 = 0.840),accounted for～23％of unknown daytime HONO source.The significant correlation between HONO fluxes and J(NO2)suggests a light-driven HONO formation mechanism responsible for the surface HONO flux during daytime.
文献关键词：
中图分类号：
作者姓名：
Fanhao Meng;Min Qin;Wu Fang;Jun Duan;Ke Tang;Helu Zhang;Dou Shao;Zhitang Liao;Yan Feng;Yong Huang;Ting Ni;Pinhua Xie;Jianguo Liu;Wenqing Liu
作者机构：
Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;Anhui Institute of Meteorological Sciences,Anhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing,Hefei 230031,China;Shouxian National Climatology Observatory,Huaihe River Basin Typical Farm Eco-meteorological Experiment Field of China Meteorological Administration,Shouxian 232200,China;Center for Excellence in Regional Atmospheric Environment,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China
文献出处：
引用格式：
[1]Fanhao Meng;Min Qin;Wu Fang;Jun Duan;Ke Tang;Helu Zhang;Dou Shao;Zhitang Liao;Yan Feng;Yong Huang;Ting Ni;Pinhua Xie;Jianguo Liu;Wenqing Liu-.Measurement of HONO flux using the aerodynamic gradient method over an agricultural field in the Huaihe River Basin,China)[J].环境科学学报（英文版）,2022(04):297-307
A类：
noontime,ppbV
B类：
Measurement,HONO,using,aerodynamic,gradient,method,over,agricultural,Huaihe,River,Basin,China,To,investigate,nitrous,acid,levels,potential,sources,above,crop,rotation,fields,fluxes,were,measured,by,AG,from,December,January,ambient,two,different,heights,showing,typical,diurnal,cycle,daytime,nighttime,upward,mostly,observed,during,whereas,deposition,dominated,variation,followed,solar,radiation,maximum,nmol,sec,average,indicated,that,was,net,atmospheric,higher,NO2,conversion,rate,close,surface,suggested,nocturnal,formed,released,near,ground,unknown,derived,budget,analysis,strength,hr,which,highly,correlated,photolysis,frequency,product,accounted,significant,correlation,between,suggests,light,driven,formation,mechanism,responsible
AB值：
0.439562
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