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Erratum to:Deriving Temporal and Vertical Distributions of Methane in Xianghe Using Ground-based Fourier Transform Infrared and Gas-analyzer

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Advances in Atmospheric Sciences 2024年第2期41卷 377-377页

作者： Denghui JI Minqiang ZHOU Pucai wang Yang YANG Ting wang Xiaoyu SUN Christian HERMANS Bo YAO gengchen wang Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Royal Belgian Institute for Space Aeronomy Brussels 1180Belgium University of Chinese Academy of Sciences Beijing 100049China Meteorological Observation Center China Meteorological AdministrationBeijing 100081China

“Diurnal variation of CH4 at the surface from spring to *** time units are in local time(+8 h UTC).The error bar is 1σfor all the observed hourly mean data within that season at that local time.”in the caption of Fig.8 on Page 604 should be“Diurnal variation of CH4 at the surface from spring to *** time units are in *** error bar is 1σfor all the observed hourly mean data within that season at that local time.”

关键词： winter season Infrared

Deriving Temporal and Vertical Distributions of Methane in Xianghe Using Ground-based Fourier Transform Infrared and Gas-analyzer Measurements

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Advances in Atmospheric Sciences 2020年第6期37卷 597-607页

Methane(CH4)is one of the most important greenhouse gases in the atmosphere,making it worthwhile to study its temporal and vertical distributions in source areas,e.g.,North *** this purpose,a ground-based high-resolution Fourier transform infrared spectrometer(FTIR),the Bruker IFS 125 HR,along with an in-situ instrument,the Picarro G2301,were deployed in Xianghe County(39.8°N,117.0°E),Hebei Province,*** have been recorded since *** the FTIR measurements,we used two observation modes to retrieve the mole fraction of CH4:the Total Carbon Column Observing Network(TCCON)method(retrieval algorithm:GGG2014),and the Network for the Detection of Atmospheric Composition Change(NDACC)method(retrieval algorithm:SFIT4).Combining FTIR with in-situ measurements,we found the temporal and vertical distributions of atmospheric CH4 within three vertical layers(near the ground,in the troposphere,and in the stratosphere),and throughout the whole *** the diurnal variation of CH4 near the ground,the concentration at night was higher than during the *** the seasonal variation,CH4 was low in spring and high in summer,for all three vertical *** addition,there was a peak of CH4 in winter near the ground,both in the troposphere and the whole *** found that variation of CH4 in the tropospheric column was close to that of the in-situ measurements near the ***,the variations of CH4 in the stratospheric column could be influenced by vertical motions,since it was higher in summer and lower in winter.

关键词： winter Vertical column

A kinetic study of the reaction of ozone with ethylene in a smog chamber under atmospheric conditions

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Chinese Science Bulletin 2006年第23期51卷 2839-2843页

作者： XU Yongfu JIA Long GE Maofa DU Lin wang gengchen wang Dianxun State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Research Center for Atmospheric Environment Beijing Normal University Beijing 100875 China Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Division for Middle Atmosphere and Remote Sensing Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

Ozone is one of the key species in the processes of atmospheric chemistry, which can be taken as an indicator of oxidation capacity in the troposphere. The reaction of ozone with reactive gases is an important process in the troposphere. Experimental simulation equipment of smog chamber for atmospheric reactions is used to study the reaction of ozone with ethylene in real atmospheric environment with ozone concentrations of 100―200 ppb. The concentrations of ozone and ethylene were moni-tored during the reaction with the combination of Model 49C-O_3 Analyzer and GC-FID. A rate constant of 1.01×10^(-18) (cm^3·mol^(-1)·s-(~1)) was obtained at 286.5 K, under condition of which the half-life of ozone was 88 min. The results obtained from our experiments are in excellent agreement with those reported previously by other researchers under extremely low pressure in terms of matrixisolation technology. This demonstrates that our equipment of smog chamber for atmospheric reactions is reliable, which can be used for further research of the processes of atmospheric reactions.

关键词：臭氧乙烯反作用力动力学比率常量气相反应

Ozone mini-hole occurring over the Tibetan Plateau in December 2003

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Chinese Science Bulletin 2006年第7期51卷 885-888页

作者： BIAN Jianchun wang gengchen CHEN Hongbin QI Donglin LUE Daren ZHOU Xiuji LAGEO Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Qinghai Meteorological Bureau Xining 810001 China Chinese Academy of Meteorological Sciences Beijing 100081 China

By analyzing the total ozone data from TOMS and ground-based observations, it is found that a large area with extremely low ozone occurred over the Tibetan Plateau during December 14-17, 2003. After correcting the bias in TOMS data, the area with the total ozone < 220 DU is found to be over 2500000 km2, and the minimum value is only 190 DU. It is the first time that an ozone mini-hole or an extremely low ozone event is found to occur over the Tibetan Plateau.

关键词：西藏高原臭氧环境保护 TOMS数据地面观察

A method for calculating the total ozone amount in the clear skies

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Journal of Environmental Sciences 1996年第3期8卷 308-312页

作者： Bai Jianhui wang gengchen(Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

A new method for calculating the clear day total ozone amount was obtained by the regression analysis of the observation data of ozone,solar UV radiation, and meteorological *** this method the monthly mean total ozone amounts for the year 1991 in Beijing were calculated. Generally, the calculated values agree well with the Dobson spectrophotometer measurements, the average relative deviation between them being less than 2. 2%. According to the F-test,the photochemical reactions in the atmosphere,the solar UV radiation,and the aerosols are three most important factors to affect the column total ozone amount.

关键词： total ozone amount solar UV radiation photochemical reaction.

One stone three birds:Ni-catalyzed asymmetric allenylic substitution of allenic ethers,hydroalkylation of 1,3-enynes and double alkylation of enynyl ethers

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Chinese Chemical Letters 2024年第8期35卷 282-287页

作者： Zhirong Yang Shan wang Ming Jiang gengchen Li Long Li Fangzhi Peng Zhihui Shao Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of EducationSchool of Chemical Science and TechnologyYunnan Provincial Center for Research&Development of Natural Productsand State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanYunnan UniversityKunming 650091China

The development of low-cost,earth-abundant and environmentally benign transition metal catalysts,which can catalyze multiple different types of asymmetric reactions,is an important objective in mod-ern asymmetric *** we demonstrate that a chiral Ni/P-Phos catalyst achieves three types of asymmetric reactions:allenylic substitution of racemic allenic ethers,1,4-hydroalkylation of prochiral 1,3-enynes and double alkylation of newly designed enynyl ether *** methods complement each other and produce various axially chiral allene derivatives bearing a pyrazolidine-3,5-dione unit,which is widely present in drugs and biologically active molecules with versatile pharmacological activities.

关键词： Nickel Asymmetric catalysis Allenylic substitution Hydroalkylation Double alkylation Allene 1,3-Enyne Pyrazolidine-3,5-dione

Au-Fe_(3)O_(4) dumbbell-like nanoparticles based lateral flow immunoassay for colorimetric and photothermal dual-mode detection of SARS-CoV-2 spike protein

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Chinese Chemical Letters 2024年第6期35卷 536-540页

作者： gengchen Guo Tianyu Zhao Ruichang Sun Mingzhe Song Hongyu Liu Sen wang Jingwen Li Jingbin Zeng College of Chemistry and Chemical Engineering and State Key Laboratory of heavy oil processing China University of Petroleum(East China)Qingdao 266580China Huangdao Customs of the People’s Republic of China Qingdao 266580China

Lateral flow immunoassay(LFIA)has become popular in laboratories,at-home testing,and medical diagnostics due to its minimal cost and ***,conventional test strips based on colloidal gold can only obtain qualitative or semi-quantitative results with low *** this work,AuFe_(3)O_(4) dumbbell-like nanoparticles were synthesized and used as the LFIA labelling marker for highly sensitive colorimetric-photothermal dual-mode detection of SARS-CoV-2 spike(S)*** unique dumbbell structure of Au-Fe_(3)O_(4) NPs makes it possible to combine the best features of both Au NPs and Fe_(3)O_(4) *** increased surface area of these NPs enhances their LSPR effect and photothermal effect,which achieves signal amplification to increase *** Au-Fe_(3)O_(4) NPs modified with S protein antibody could identify S protein in samples,which were recognized and accumulated on T-line by another antibody,generating color band for qualitative colorimetric *** T-line was irradiated by laser to obtain temperature change for quantitative detection of *** optimized conditions,the detection limit was 1.22 pg/m L,three orders of magnitude more sensitive than colorimetric ***,the approach was performed on SARS-CoV-2 pseudovirus samples and outperformed traditional colloidal gold *** LFIA platform exhibits significant promise for practical implementation,as it can satisfy the need for low-cost,high-sensitivity,and home-based quantitative detection for respiratory infectious diseases.

关键词： Au-Fe_(3)O_(4) dumbbell-like nanoparticles Photothermal effect LFIA S protein

CO_2 background concentration in the atmosphere over the Chinese mainland

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Chinese Science Bulletin 2002年第14期47卷 1217-1220页

作者： wang gengchen, WEN Yupu, KONG Qinxin, REN Lixin & wang MulinInstitute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China Academy of Meteorological Sciences, China Meteorological Administration, Beijing 100086, China Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Academy of Meteorological Sciences China Meteorological Administration Beijing China

Based on the long-term monitoring data on CO2 concentration, variation trend and characteristics of CO2 background concentration in the atmosphere over the Chinese mainland are analyzed. Results show that the increasing trend of CO2 background concentration in the atmosphere over the Chinese mainland has appeared during the period of 1991-2000. The average annual CO2 growth increment is 1.59μL/L, and the average annual CO2 growth rate is 0.44%. Distinct seasonal variations of CO2 background concentration are observed, and the averaged amplitude of CO2 seasonal variations is 10.35μL/L. Regional variation characteristics of CO2 background concentration in the atmosphere and possible impact of human activities on these variations over the Chinese mainland are discussed as well.

关键词： CO2 background concentration Chinese mainland CO2 growth rate CO2 seasonal variation CO2 regional variation CO2 variation trend.

Long-Term Trends of Carbon Monoxide Total Columnar Amount in Urban Areas and Background Regions:Ground-and Satellite-based Spectroscopic Measurements

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Advances in Atmospheric Sciences 2018年第7期35卷 785-795页

作者： Pucai wang N.F.ELANSKY Yu.M.TIMOFEEV gengchen wang G.S.GOLITSYN M.V.MAKAROVA V.S.RAKITIN Yu.SHTABKIN A.I.SKOROKHOD E.I.GRECHKO E.V.FOKEEVA A.N.SAFRONOV Liang RAN Ting wang LAGEO Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China A.M.Obukhov Institute of Atmospheric Physics Russian Academy of SciencesMoscow 119017Russia St.Petersburg State University Saint-Petersburg 198904Russia

A comparative study was carried out to explore carbon monoxide total columnar amount（CO TC） in background and polluted atmosphere, including the stations of ZSS（Zvenigorod）, ZOTTO（Central Siberia）, Peterhof, Beijing, and Moscow,during 1998–2014, on the basis of ground-and satellite-based spectroscopic measurements. Interannual variations of CO TC in different regions of Eurasia were obtained from ground-based spectroscopic observations, combined with satellite data from the sensors MOPITT（2001–14）, AIRS（2003–14）, and IASI Met Op-A（2010–13）. A decreasing trend in CO TC（1998–2014） was found at the urban site of Beijing, where CO TC decreased by 1.14% ± 0.87% yr^（-1）. Meanwhile, at the Moscow site, CO TC decreased remarkably by 3.73% ± 0.39% yr^（-1）. In the background regions（ZSS, ZOTTO, Peterhof）, the reduction was 0.9%–1.7% yr^（-1） during the same period. Based on the AIRSv6 satellite data for the period 2003–14, a slight decrease（0.4%–0.6% yr^（-1）） of CO TC was detected over the midlatitudes of Eurasia, while a reduction of 0.9%–1.2% yr^（-1） was found in Southeast Asia. The degree of correlation between the CO TC derived from satellite products（MOPITTv6 Joint, AIRSv6 and IASI Met Op-A） and ground-based measurements was calculated, revealing significant correlation in unpolluted *** in polluted areas, IASI Met Op-A and AIRSv6 data underestimated CO TC by a factor of 1.5–2.8. On average, the correlation coefficient between ground-and satellite-based data increased significantly for cases with PBL heights greater than 500 m.

关键词： carbon monoxide trend spectroscopic measurement MOPITT AIRS IASI