Study of atmospheric CO2 and CH4 at Longfengshan WMO/GAW regional station： The variations, trends, influence of local sources/sinks, and transport
Atmospheric CO2 and CH4 have been continuously measured since 2009 at Longfengshan WMO/GAW station（LFS） in China. Variations of the mole fractions, influence of long-distance transport, effects of local sources/sinks and the characteristics of synoptic scale variations have been studied based on the...
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| Veröffentlicht in: | Science China. Earth sciences 2017-10, Vol.60 (10), p.1886-1895 |
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| creator | Fang, ShuangXi Tans, Pieter P. Yao, Bo Luan, Tian Wu, YanLing Yu, DaJiang |
| description | Atmospheric CO2 and CH4 have been continuously measured since 2009 at Longfengshan WMO/GAW station（LFS） in China. Variations of the mole fractions, influence of long-distance transport, effects of local sources/sinks and the characteristics of synoptic scale variations have been studied based on the records from 2009 to 2013. Both the CO2 and CH4 mole fractions display increasing trends in the last five years, with growth rates of 3.1±0.02 ppm yr^-1 for CO2 and 8±0.04 ppb yr^-1（standard error, 1-σ）for CH4. In summer, the regional CO2 mole fractions are apparently lower than the Marine Boundary Layer reference, with the lowest value of.13.6±0.7 ppm in July, while the CH4 values are higher than the MBL reference, with the maximum of 139±6 ppb.From 9 to 17（Local time, LT） in summer, the atmospheric CO2 mole fractions at 10 m a.g.l. are always lower than at 80 m, with a mean difference of.1.1±0.2 ppm, indicating that the flask sampling approach deployed may underestimate the background mole fractions in summer. In winter, anthropogenic emissions dominate the regional CO2 and CH4 mole fractions. Cluster analysis of backward trajectories shows that atmospheric CO2 and CH4 at LFS are influenced by anthropogenic emissions from the southwest（Changchun and Jilin city） all year. The synoptic scale variations indicate that the northeastern China plain acts as an important source of atmospheric CO2 and CH4 in winter. |
| doi_str_mv | 10.1007/s11430-016-9066-3 |
| format | Article |
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Variations of the mole fractions, influence of long-distance transport, effects of local sources/sinks and the characteristics of synoptic scale variations have been studied based on the records from 2009 to 2013. Both the CO2 and CH4 mole fractions display increasing trends in the last five years, with growth rates of 3.1±0.02 ppm yr^-1 for CO2 and 8±0.04 ppb yr^-1（standard error, 1-σ）for CH4. In summer, the regional CO2 mole fractions are apparently lower than the Marine Boundary Layer reference, with the lowest value of.13.6±0.7 ppm in July, while the CH4 values are higher than the MBL reference, with the maximum of 139±6 ppb.From 9 to 17（Local time, LT） in summer, the atmospheric CO2 mole fractions at 10 m a.g.l. are always lower than at 80 m, with a mean difference of.1.1±0.2 ppm, indicating that the flask sampling approach deployed may underestimate the background mole fractions in summer. In winter, anthropogenic emissions dominate the regional CO2 and CH4 mole fractions. Cluster analysis of backward trajectories shows that atmospheric CO2 and CH4 at LFS are influenced by anthropogenic emissions from the southwest（Changchun and Jilin city） all year. The synoptic scale variations indicate that the northeastern China plain acts as an important source of atmospheric CO2 and CH4 in winter.</description><identifier>ISSN: 1674-7313</identifier><identifier>EISSN: 1869-1897</identifier><identifier>DOI: 10.1007/s11430-016-9066-3</identifier><language>eng</language><publisher>Beijing: Science China Press</publisher><subject>Anthropogenic factors ; Atmosphere ; Boundary layers ; Carbon dioxide ; Carbon dioxide atmospheric concentrations ; CH4 ; Cluster analysis ; Earth and Environmental Science ; Earth Sciences ; Emissions ; Growth rate ; Human influences ; Methane ; Regional analysis ; Regions ; Research Paper ; Sinkholes ; Standard error ; Summer ; Temperature ; Trajectory analysis ; Transport ; Transportation ; Trends ; Variation ; Winter ; WMO ; 区域站 ; 大气CO2 ; 天气尺度 ; 摩尔分数 ; 水沟 ; 运输</subject><ispartof>Science China. Earth sciences, 2017-10, Vol.60 (10), p.1886-1895</ispartof><rights>Science China Press and Springer-Verlag GmbH Germany 2017</rights><rights>Science China Earth Sciences is a copyright of Springer, 2017.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c343t-fd82de2f8a0660f0a49275899cb1f9b2bf16cae8e25fec731e4a236c11c1191c3</citedby><cites>FETCH-LOGICAL-c343t-fd82de2f8a0660f0a49275899cb1f9b2bf16cae8e25fec731e4a236c11c1191c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/60111X/60111X.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11430-016-9066-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11430-016-9066-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids></links><search><creatorcontrib>Fang, ShuangXi</creatorcontrib><creatorcontrib>Tans, Pieter P.</creatorcontrib><creatorcontrib>Yao, Bo</creatorcontrib><creatorcontrib>Luan, Tian</creatorcontrib><creatorcontrib>Wu, YanLing</creatorcontrib><creatorcontrib>Yu, DaJiang</creatorcontrib><title>Study of atmospheric CO2 and CH4 at Longfengshan WMO/GAW regional station： The variations, trends, influence of local sources/sinks, and transport</title><title>Science China. Earth sciences</title><addtitle>Sci. China Earth Sci</addtitle><addtitle>SCIENCE CHINA Earth Sciences</addtitle><description>Atmospheric CO2 and CH4 have been continuously measured since 2009 at Longfengshan WMO/GAW station（LFS） in China. Variations of the mole fractions, influence of long-distance transport, effects of local sources/sinks and the characteristics of synoptic scale variations have been studied based on the records from 2009 to 2013. Both the CO2 and CH4 mole fractions display increasing trends in the last five years, with growth rates of 3.1±0.02 ppm yr^-1 for CO2 and 8±0.04 ppb yr^-1（standard error, 1-σ）for CH4. In summer, the regional CO2 mole fractions are apparently lower than the Marine Boundary Layer reference, with the lowest value of.13.6±0.7 ppm in July, while the CH4 values are higher than the MBL reference, with the maximum of 139±6 ppb.From 9 to 17（Local time, LT） in summer, the atmospheric CO2 mole fractions at 10 m a.g.l. are always lower than at 80 m, with a mean difference of.1.1±0.2 ppm, indicating that the flask sampling approach deployed may underestimate the background mole fractions in summer. In winter, anthropogenic emissions dominate the regional CO2 and CH4 mole fractions. Cluster analysis of backward trajectories shows that atmospheric CO2 and CH4 at LFS are influenced by anthropogenic emissions from the southwest（Changchun and Jilin city） all year. The synoptic scale variations indicate that the northeastern China plain acts as an important source of atmospheric CO2 and CH4 in winter.</description><subject>Anthropogenic factors</subject><subject>Atmosphere</subject><subject>Boundary layers</subject><subject>Carbon dioxide</subject><subject>Carbon dioxide atmospheric concentrations</subject><subject>CH4</subject><subject>Cluster analysis</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Emissions</subject><subject>Growth rate</subject><subject>Human influences</subject><subject>Methane</subject><subject>Regional analysis</subject><subject>Regions</subject><subject>Research Paper</subject><subject>Sinkholes</subject><subject>Standard error</subject><subject>Summer</subject><subject>Temperature</subject><subject>Trajectory analysis</subject><subject>Transport</subject><subject>Transportation</subject><subject>Trends</subject><subject>Variation</subject><subject>Winter</subject><subject>WMO</subject><subject>区域站</subject><subject>大气CO2</subject><subject>天气尺度</subject><subject>摩尔分数</subject><subject>水沟</subject><subject>运输</subject><issn>1674-7313</issn><issn>1869-1897</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp9UMFOGzEQXaEigYAP4GbRa7fx2Bvv-oiiFiqlyqEgjpbjHScLwQ62g8R_9NRv6T_1F5htUNUTlqUZjd-b5_eq6hz4Z-C8nWSARvKag6o1V6qWB9UxdErX0On2A_WqbepWgjyqznK-53QkvYj2uPr5o-z6FxY9s-Ux5u0a0-DYbCGYDT2bXTc0Z_MYVh7DKq9tYHffF5OryzuWcDXEYDcsF1uo-_P7F7tZI3u2afg7yJ9YSRh6qkPwmx0Gh6PQJrqRFXfJYZ7kITwQYlQryYa8jamcVofebjKevdWT6vbrl5vZdT1fXH2bXc5rJxtZat93okfhO0umuee20aKddlq7JXi9FEsPylnsUEw9OvKPjRVSOQC6Gpw8qT7u925TfNphLuaefkWesgHddHzaggJCwR7lUsw5oTfbNDza9GKAmzF_s8_fUP5mzN9I4og9JxM2rDD9t_kd0sWb0JoCfyLePyXVyoYL3k3lKzAelV0</recordid><startdate>20171001</startdate><enddate>20171001</enddate><creator>Fang, ShuangXi</creator><creator>Tans, Pieter P.</creator><creator>Yao, Bo</creator><creator>Luan, Tian</creator><creator>Wu, YanLing</creator><creator>Yu, DaJiang</creator><general>Science China Press</general><general>Springer Nature B.V</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>M2P</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope></search><sort><creationdate>20171001</creationdate><title>Study of atmospheric CO2 and CH4 at Longfengshan WMO/GAW regional station： The variations, trends, influence of local sources/sinks, and transport</title><author>Fang, ShuangXi ; Tans, Pieter P. ; Yao, Bo ; Luan, Tian ; Wu, YanLing ; Yu, DaJiang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c343t-fd82de2f8a0660f0a49275899cb1f9b2bf16cae8e25fec731e4a236c11c1191c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Anthropogenic factors</topic><topic>Atmosphere</topic><topic>Boundary layers</topic><topic>Carbon dioxide</topic><topic>Carbon dioxide atmospheric concentrations</topic><topic>CH4</topic><topic>Cluster analysis</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Emissions</topic><topic>Growth rate</topic><topic>Human influences</topic><topic>Methane</topic><topic>Regional analysis</topic><topic>Regions</topic><topic>Research Paper</topic><topic>Sinkholes</topic><topic>Standard error</topic><topic>Summer</topic><topic>Temperature</topic><topic>Trajectory analysis</topic><topic>Transport</topic><topic>Transportation</topic><topic>Trends</topic><topic>Variation</topic><topic>Winter</topic><topic>WMO</topic><topic>区域站</topic><topic>大气CO2</topic><topic>天气尺度</topic><topic>摩尔分数</topic><topic>水沟</topic><topic>运输</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fang, ShuangXi</creatorcontrib><creatorcontrib>Tans, Pieter P.</creatorcontrib><creatorcontrib>Yao, Bo</creatorcontrib><creatorcontrib>Luan, Tian</creatorcontrib><creatorcontrib>Wu, YanLing</creatorcontrib><creatorcontrib>Yu, DaJiang</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><jtitle>Science China. Earth sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fang, ShuangXi</au><au>Tans, Pieter P.</au><au>Yao, Bo</au><au>Luan, Tian</au><au>Wu, YanLing</au><au>Yu, DaJiang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study of atmospheric CO2 and CH4 at Longfengshan WMO/GAW regional station： The variations, trends, influence of local sources/sinks, and transport</atitle><jtitle>Science China. Earth sciences</jtitle><stitle>Sci. China Earth Sci</stitle><addtitle>SCIENCE CHINA Earth Sciences</addtitle><date>2017-10-01</date><risdate>2017</risdate><volume>60</volume><issue>10</issue><spage>1886</spage><epage>1895</epage><pages>1886-1895</pages><issn>1674-7313</issn><eissn>1869-1897</eissn><abstract>Atmospheric CO2 and CH4 have been continuously measured since 2009 at Longfengshan WMO/GAW station（LFS） in China. Variations of the mole fractions, influence of long-distance transport, effects of local sources/sinks and the characteristics of synoptic scale variations have been studied based on the records from 2009 to 2013. Both the CO2 and CH4 mole fractions display increasing trends in the last five years, with growth rates of 3.1±0.02 ppm yr^-1 for CO2 and 8±0.04 ppb yr^-1（standard error, 1-σ）for CH4. In summer, the regional CO2 mole fractions are apparently lower than the Marine Boundary Layer reference, with the lowest value of.13.6±0.7 ppm in July, while the CH4 values are higher than the MBL reference, with the maximum of 139±6 ppb.From 9 to 17（Local time, LT） in summer, the atmospheric CO2 mole fractions at 10 m a.g.l. are always lower than at 80 m, with a mean difference of.1.1±0.2 ppm, indicating that the flask sampling approach deployed may underestimate the background mole fractions in summer. In winter, anthropogenic emissions dominate the regional CO2 and CH4 mole fractions. Cluster analysis of backward trajectories shows that atmospheric CO2 and CH4 at LFS are influenced by anthropogenic emissions from the southwest（Changchun and Jilin city） all year. The synoptic scale variations indicate that the northeastern China plain acts as an important source of atmospheric CO2 and CH4 in winter.</abstract><cop>Beijing</cop><pub>Science China Press</pub><doi>10.1007/s11430-016-9066-3</doi><tpages>10</tpages></addata></record> |
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| subjects | Anthropogenic factors Atmosphere Boundary layers Carbon dioxide Carbon dioxide atmospheric concentrations CH4 Cluster analysis Earth and Environmental Science Earth Sciences Emissions Growth rate Human influences Methane Regional analysis Regions Research Paper Sinkholes Standard error Summer Temperature Trajectory analysis Transport Transportation Trends Variation Winter WMO 区域站 大气CO2 天气尺度 摩尔分数 水沟 运输 |
| title | Study of atmospheric CO2 and CH4 at Longfengshan WMO/GAW regional station： The variations, trends, influence of local sources/sinks, and transport |
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