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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">gesj</journal-id><journal-title-group><journal-title xml:lang="en">GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</journal-title><trans-title-group xml:lang="ru"><trans-title>GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2071-9388</issn><issn pub-type="epub">2542-1565</issn><publisher><publisher-name>Russian Geographical Society</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24057/2071-9388-2017-24</article-id><article-id custom-type="elpub" pub-id-type="custom">gesj-664</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH PAPER</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Isoprene and monoterpenes over Russia and their impacts in tropospheric ozone formation</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Berezina</surname><given-names>E.</given-names></name></name-alternatives><bio xml:lang="en"><p>Elena Berezina</p><p>Moscow</p></bio><email xlink:type="simple">e_berezina_83@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Moiseenko</surname><given-names>K.</given-names></name></name-alternatives><bio xml:lang="en"><p>Konstantin Moiseenko</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Skorokhod</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Andrey Skorokhod</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Elansky</surname><given-names>N.</given-names></name></name-alternatives><bio xml:lang="en"><p>Nikolay Elansky</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Belikov</surname><given-names>I.</given-names></name></name-alternatives><bio xml:lang="en"><p>Igor Belikov</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Pankratova</surname><given-names>N.</given-names></name></name-alternatives><bio xml:lang="en"><p>Natalia Pankratova</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>28</day><month>03</month><year>2019</year></pub-date><volume>12</volume><issue>1</issue><fpage>63</fpage><lpage>74</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Berezina E., Moiseenko K., Skorokhod A., Elansky N., Belikov I., Pankratova N., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Berezina E., Moiseenko K., Skorokhod A., Elansky N., Belikov I., Pankratova N.</copyright-holder><copyright-holder xml:lang="en">Berezina E., Moiseenko K., Skorokhod A., Elansky N., Belikov I., Pankratova N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://ges.rgo.ru/jour/article/view/664">https://ges.rgo.ru/jour/article/view/664</self-uri><abstract><p>Ground-based levels of important biogenic volatile organic compounds (BVOCs), isoprene and monoterpenes, as well as NOx and O3 measured simultaneously along the Trans-Siberian railway on a mobile railway laboratory in TROICA-12 campaign in summer 2008 are analyzed. It was shown that the highest isoprene (≥ 2.5 ppb) concentration was observed in the daytime in the Far East region where several favorable factors for its emissions occurred: a large amount of deciduous forests, high temperatures (&gt;28°C) and light conditions. Maximum levels of monoterpenes (up to 3-9 ppb) along the Trans-Siberian railway were observed during the nighttime in the Ural region and in Central Siberia where coniferous vegetation is located. To evaluate the relative importance of isoprene and monoterpenes in ground-level ozone formation in Russian cities along the Trans-Siberian railway, where high NOx concentration leads to tropospheric ozone generation, daytime ozone-forming potential (OFP) was calculated. The chemical losses of the studied BVOCs during their transport from sources to the measurement point were taken into account. Calculated OFPs due to isoprene (OFPiso) and monoterpenes (OFPmono) along the Trans-Siberian railway are in average 15±13 and 18±25 ppbv of ozone, respectively. The highest OFPiso (up to 40 ppbv) were estimated in Central Siberia and in the Far East. OFPmono was the highest in the regions of coniferous vegetation, Ural and Central Siberia, and reached 80 ppbv. In the most cities along the Trans-Siberian railway, where high NOx concentration (10-20 ppbv) along with high daytime temperatures (&gt;25°C) were observed, monoterpenes made a main contribution to tropospheric ozone formation. Only in the Far East cities, where the largest deciduous vegetation area of the Trans-Siberian railway is located, isoprene played the main role in tropospheric ozone generation. It was also noted that OFPiso increases with the population-size of the cities. It can be either due to the greater proportion of deciduous vegetation in the large cities along the Trans-Siberian railway or due to the impact of anthropogenic isoprene source. OFPmono the lowest in the medium cities and the highest in the small ones.</p></abstract><kwd-group xml:lang="en"><kwd>isoprene</kwd><kwd>monoterpenes</kwd><kwd>tropospheric ozone</kwd><kwd>biogenic volatile organic</kwd><kwd>ozoneforming potential</kwd><kwd>Trans-Siberian railway</kwd><kwd>mobile laboratory</kwd><kwd>TROICA</kwd></kwd-group><funding-group><funding-statement xml:lang="en">Russian Foundation for Basic Research, grants no. 16-35-00158, 17-29-05102 and 18-3520031</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Borbon A., Fontaine H., Veillerot M., Locoge N., Galloo J. C., and Guillermo R. (2001). An investigation into the traffic-related fraction of isoprene at an urban location. Atmos. Environ., 35, 3749-3760.</mixed-citation><mixed-citation xml:lang="en">Borbon A., Fontaine H., Veillerot M., Locoge N., Galloo J. C., and Guillermo R. (2001). An investigation into the traffic-related fraction of isoprene at an urban location. Atmos. Environ., 35, 3749-3760.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Bowman F. M. and J. H. Seinfeld (1994). Ozone productivity of atmospheric organics. Journal of Geophysical Research Atmospheres 99(D3):5309-5324.</mixed-citation><mixed-citation xml:lang="en">Bowman F. M. and J. H. Seinfeld (1994). Ozone productivity of atmospheric organics. Journal of Geophysical Research Atmospheres 99(D3):5309-5324.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Carter W. P. L. (1994). Development of ozone reactivity scales for volatile organic compounds. J. Air Waste Manage. Assoc., 44, 881-899.</mixed-citation><mixed-citation xml:lang="en">Carter W. P. L. (1994). Development of ozone reactivity scales for volatile organic compounds. J. Air Waste Manage. Assoc., 44, 881-899.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Carter W. P L. (2010). Updated Maximum Incremental Reactivity Scale and hydrocarbon reactivities for regulatory applications. California Air Resources Board Contract 07-339, January 28, 2010.</mixed-citation><mixed-citation xml:lang="en">Carter W. P L. (2010). Updated Maximum Incremental Reactivity Scale and hydrocarbon reactivities for regulatory applications. California Air Resources Board Contract 07-339, January 28, 2010.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Crutzen PJ., Elansky N.F., Hahn M., Golitsyn G.S., Brenninkmeijer C.A.M., Scharffe D., Belikov I.B., Maiss M., Bergamaschi P, Rockmann T., Grisenko A.M., and Sevastyanov V.V. (1996). Trace gas measurements between Moscow and Vladivostok using the Trans-Siberian Railroad. J. Atm. Chemistry, No 29, 179-194.</mixed-citation><mixed-citation xml:lang="en">Crutzen PJ., Elansky N.F., Hahn M., Golitsyn G.S., Brenninkmeijer C.A.M., Scharffe D., Belikov I.B., Maiss M., Bergamaschi P, Rockmann T., Grisenko A.M., and Sevastyanov V.V. (1996). Trace gas measurements between Moscow and Vladivostok using the Trans-Siberian Railroad. J. Atm. Chemistry, No 29, 179-194.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">de Gouw J. and Warneke C. (2007). Measurements of volatile organic compounds in the Earth's atmosphere using proton-transferreaction mass spectrometry. Mass Spectrom. Rev., 26, 223-257. doi:10.1002/mas.20119</mixed-citation><mixed-citation xml:lang="en">de Gouw J. and Warneke C. (2007). Measurements of volatile organic compounds in the Earth's atmosphere using proton-transferreaction mass spectrometry. Mass Spectrom. Rev., 26, 223-257. doi:10.1002/mas.20119</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Duan J.C., Tan J.H., Yang L., Wu S.X., and Hao J.M. (2008). Concentration, Sources and Ozone Formation Potential of Volatile Organic Compounds (VOCs) during Ozone Episode in Beijing. Atmos. Res. 88: 25-35.</mixed-citation><mixed-citation xml:lang="en">Duan J.C., Tan J.H., Yang L., Wu S.X., and Hao J.M. (2008). Concentration, Sources and Ozone Formation Potential of Volatile Organic Compounds (VOCs) during Ozone Episode in Beijing. Atmos. Res. 88: 25-35.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Elansky N.F., Belikov I.B., Berezina E.V. (2009). Atmospheric composition observations over Northern Eurasia using the mobile laboratory: TROICA experiments, edited by N.F. Elansky, Moscow, 73 p.</mixed-citation><mixed-citation xml:lang="en">Elansky N.F., Belikov I.B., Berezina E.V. (2009). Atmospheric composition observations over Northern Eurasia using the mobile laboratory: TROICA experiments, edited by N.F. Elansky, Moscow, 73 p.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Elansky N.F., Golitsyn G.S., Vlasenko T.S., and Volokh A.A. (2000). Volatile organic compounds observed in the atmospheric surface layer along the Trans-Siberian Railroad. Dokl. Akad. Nauk, V. 373, No 6, 816-821.</mixed-citation><mixed-citation xml:lang="en">Elansky N.F., Golitsyn G.S., Vlasenko T.S., and Volokh A.A. (2000). Volatile organic compounds observed in the atmospheric surface layer along the Trans-Siberian Railroad. Dokl. Akad. Nauk, V. 373, No 6, 816-821.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Fan J. and Zhang R. (2004). Atmospheric oxidation mechanism of isoprene. Environ. Chem. 2004, 1, 140-149. doi:10.1071/EN04045</mixed-citation><mixed-citation xml:lang="en">Fan J. and Zhang R. (2004). Atmospheric oxidation mechanism of isoprene. Environ. Chem. 2004, 1, 140-149. doi:10.1071/EN04045</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Guenther A., Geron C., Pierce T., Lamb B., Harley P, Fall R. (2000). Atmospheric Environment, 34, pp. 2205-2230.</mixed-citation><mixed-citation xml:lang="en">Guenther A., Geron C., Pierce T., Lamb B., Harley P, Fall R. (2000). Atmospheric Environment, 34, pp. 2205-2230.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Kleinman L.I., Daum PH., Lee J.H., Lee Y.-N., Nunnermacker L.J., Springston S.R., Newman L., Weiristein-Lloyd J.b., Sillman S. (1997). Dependence of ozone production on NO and hydrocarbons in the troposphere. GRL. 24:2299-2302.</mixed-citation><mixed-citation xml:lang="en">Kleinman L.I., Daum PH., Lee J.H., Lee Y.-N., Nunnermacker L.J., Springston S.R., Newman L., Weiristein-Lloyd J.b., Sillman S. (1997). Dependence of ozone production on NO and hydrocarbons in the troposphere. GRL. 24:2299-2302.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Kleinman L.I., Daum PH., Lee Y.-N., Nunnermacker L.J., Springston S.R., Weinstein-Lloyd J., Rudolph J. (2001). Sensitivity of ozone production rate to ozone precursors. Geophysical Research Letters 28, 2903-2906.</mixed-citation><mixed-citation xml:lang="en">Kleinman L.I., Daum PH., Lee Y.-N., Nunnermacker L.J., Springston S.R., Weinstein-Lloyd J., Rudolph J. (2001). Sensitivity of ozone production rate to ozone precursors. Geophysical Research Letters 28, 2903-2906.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Panin L.V., Elansky N.F., Belikov I.B., Granberg I.G., Andronova A.V., Obvintsev Yu.I., Bogdanov V.M., Grisenko A.M., and Mozgrin V.S. (2001). Estimation of Reliability of the Data on Pollutant Content Measured in the Atmospheric Surface Layer in the TROICA Experiments. Izvestiya, Atmospheric and Oceanic Physics, V. 37, Suppl. 1,81-91.</mixed-citation><mixed-citation xml:lang="en">Panin L.V., Elansky N.F., Belikov I.B., Granberg I.G., Andronova A.V., Obvintsev Yu.I., Bogdanov V.M., Grisenko A.M., and Mozgrin V.S. (2001). Estimation of Reliability of the Data on Pollutant Content Measured in the Atmospheric Surface Layer in the TROICA Experiments. Izvestiya, Atmospheric and Oceanic Physics, V. 37, Suppl. 1,81-91.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Penuelas J. and Staudt M. (2010). BVOCs and global change. Trends Plant Sci., 15, 133-144. doi:10.1016/j.tplants.2009.12.005</mixed-citation><mixed-citation xml:lang="en">Penuelas J. and Staudt M. (2010). BVOCs and global change. Trends Plant Sci., 15, 133-144. doi:10.1016/j.tplants.2009.12.005</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Perakyla O., Vogt M., Tikkanen O-P, Laurila T., Kajos M.K., Rantala PA., Patokoski J., Aalto J., Yli-Juuti T., Ehn M., Sipila M., Paasonen P, Rissanen M., Nieminen T., Taipale R., Keronen P, Lappalainen H.K., Ruuskanen T. M., Rinne J., Kerminen V-M., Kulmala M., Back J. and Petaja T. (2014). Monoterpenes'oxidation capacity and rate over a boreal forest. Boreal Environment Research, 19, suppl. B, pp. 293-310.</mixed-citation><mixed-citation xml:lang="en">Perakyla O., Vogt M., Tikkanen O-P, Laurila T., Kajos M.K., Rantala PA., Patokoski J., Aalto J., Yli-Juuti T., Ehn M., Sipila M., Paasonen P, Rissanen M., Nieminen T., Taipale R., Keronen P, Lappalainen H.K., Ruuskanen T. M., Rinne J., Kerminen V-M., Kulmala M., Back J. and Petaja T. (2014). Monoterpenes'oxidation capacity and rate over a boreal forest. Boreal Environment Research, 19, suppl. B, pp. 293-310.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Sillman S. (1999). The relation between ozone, NOx and hydrocarbons in urban and polluted rural environments. Atmos. Environ., 33, 1821-1845. doi:10.1016/S1352-2310(98)00345-8</mixed-citation><mixed-citation xml:lang="en">Sillman S. (1999). The relation between ozone, NOx and hydrocarbons in urban and polluted rural environments. Atmos. Environ., 33, 1821-1845. doi:10.1016/S1352-2310(98)00345-8</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Skorokhod A.I., Berezina E.V., Moiseenko K.B., Elansky N.F., Belikov I.B. (2017). Benzene and Toluene in the surface air of North Eurasia from TROICA-12 campaign along the TransSiberian railway. Atmos. Chem. Phys., 17, 5501-5514. doi: 10.5194/acp-17-5501-2017</mixed-citation><mixed-citation xml:lang="en">Skorokhod A.I., Berezina E.V., Moiseenko K.B., Elansky N.F., Belikov I.B. (2017). Benzene and Toluene in the surface air of North Eurasia from TROICA-12 campaign along the TransSiberian railway. Atmos. Chem. Phys., 17, 5501-5514. doi: 10.5194/acp-17-5501-2017</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Starn T.K., Shepson PB., Bertman S.B., White J.S., Splawn B.G., Riemer D.D., Zika R.G., and Olszyna K. (1998). Observations of isoprene chemistry and its role in ozone production at a semirural site during the 1995 Southern Oxidants Study. J. Geophys. Res., pp. 103, 22, 42522, 435.</mixed-citation><mixed-citation xml:lang="en">Starn T.K., Shepson PB., Bertman S.B., White J.S., Splawn B.G., Riemer D.D., Zika R.G., and Olszyna K. (1998). Observations of isoprene chemistry and its role in ozone production at a semirural site during the 1995 Southern Oxidants Study. J. Geophys. Res., pp. 103, 22, 42522, 435.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Stroud C.A., Roberts J.M., Goldan P.D., Kuster W.C., Murphy PC., Williams E. J., Hereid D., Parrish D., Sueper D., Trainer M., Fehsenfeld F.C., Apel E.C., Riemer D., Wert B., Henry B., Fried A., MartinezHarder M., Harder H., Brune W.H., Li G., Xie H., and Young V.L. (2001). Isoprene and its oxidation products, methacrolein and methylvinyl ketone, at an urban forested site during the 1999 Southern Oxidants Study. J. Geophys. Res.: Atmos. 106 (D8), 8035-8046.</mixed-citation><mixed-citation xml:lang="en">Stroud C.A., Roberts J.M., Goldan P.D., Kuster W.C., Murphy PC., Williams E. J., Hereid D., Parrish D., Sueper D., Trainer M., Fehsenfeld F.C., Apel E.C., Riemer D., Wert B., Henry B., Fried A., MartinezHarder M., Harder H., Brune W.H., Li G., Xie H., and Young V.L. (2001). Isoprene and its oxidation products, methacrolein and methylvinyl ketone, at an urban forested site during the 1999 Southern Oxidants Study. J. Geophys. Res.: Atmos. 106 (D8), 8035-8046.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Vasileva A.V., Moiseenko K.B., Mayer J.-C., Jurgens N., Panov A., Heimann M., Andreae M.O. (2011). Assessment of the regional atmospheric impact of wildfire emissions based on CO observations at the ZOTTO tall tower station in central Siberia. J.Geophys. Res., 116, D07301. doi:10.1029/2010JD014571</mixed-citation><mixed-citation xml:lang="en">Vasileva A.V., Moiseenko K.B., Mayer J.-C., Jurgens N., Panov A., Heimann M., Andreae M.O. (2011). Assessment of the regional atmospheric impact of wildfire emissions based on CO observations at the ZOTTO tall tower station in central Siberia. J.Geophys. Res., 116, D07301. doi:10.1029/2010JD014571</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Wagner P and Kuttler W. (2014). Biogenic and anthropogenic isoprene in the near-surface urban atmosphere-A case study in Essen, Germany. Sci. Total Environ., 475, 104-115. doi:10.1016/j.scitotenv.2013.12.026</mixed-citation><mixed-citation xml:lang="en">Wagner P and Kuttler W. (2014). Biogenic and anthropogenic isoprene in the near-surface urban atmosphere-A case study in Essen, Germany. Sci. Total Environ., 475, 104-115. doi:10.1016/j.scitotenv.2013.12.026</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Wiedinmyer C., Friedfeld S., Baugh W., Greenberg J., Guenther A., Fraser M., Allen D. (2001). Measurement and analysis of atmospheric concentrations of isoprene and its reaction products in central Texas. Atmospheric Environment 35 (6), 1001-1013.</mixed-citation><mixed-citation xml:lang="en">Wiedinmyer C., Friedfeld S., Baugh W., Greenberg J., Guenther A., Fraser M., Allen D. (2001). Measurement and analysis of atmospheric concentrations of isoprene and its reaction products in central Texas. Atmospheric Environment 35 (6), 1001-1013.</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Xie X., Shao M., Liu Y., Lu S., Chang C.C., and Chen Z.M. (2008). Estimate of initial isoprene contributions to ozone formation potential in Beijing, China. Atmos. Environ., 42, 60006010.</mixed-citation><mixed-citation xml:lang="en">Xie X., Shao M., Liu Y., Lu S., Chang C.C., and Chen Z.M. (2008). Estimate of initial isoprene contributions to ozone formation potential in Beijing, China. Atmos. Environ., 42, 60006010.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
