Diurnal Trends Differentiate Anthropogenic and Biogenic Terpenes in the Los Angeles Basin

Diurnal Trends Differentiate Anthropogenic and Biogenic Terpenes in the Los Angeles Basin | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 15 May 2025 V1 Latest version Share on Diurnal Trends Differentiate Anthropogenic and Biogenic Terpenes in the Los Angeles Basin Authors : Afsara Tasnia 0000-0002-3048-5083 , Christos Stamatis 0000-0002-7969-189X , Barbara Barletta , Simone Meinardi 0000-0003-4828-9889 , Zhizhao Wang 0000-0002-2334-6173 , Katherine Ball 0000-0002-4399-7571 , John D Crounse 0000-0001-5443-729X , John H. Seinfeld 0000-0003-1344-4068 , Paul O. Wennberg 0000-0002-6126-3854 , Donald Ray Blake 0000-0002-8283-5014 , and Kelley Barsanti 0000-0002-6065-8643 [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.174733537.78499357/v1 Published Geophysical Research Letters Version of record Peer review timeline 199 views 127 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Terpenoids play a significant role in the formation of tropospheric ozone (O3) and secondary organic aerosol (SOA). While terpenoids are largely attributed to biogenic sources, they are also widely used in consumer products that end up in the atmosphere. Terpenoid mixing ratios are reported here from samples collected during the Los Angeles Air Quality Campaign (LAAQC) in 2022 and were compared with data from three other campaigns in the LA Basin conducted between 2010 and 2021. Across all campaigns, differences in diurnal mixing ratios and composition suggest anthropogenic sources are predominant contributors to terpenoid mixing ratios in the evening to early morning (22:00 – 6:00 PDT), shifting to predominately biogenic sources in the afternoon (10:00 – 18:00 PDT). This manuscript presents the first evidence for a significant presence of anthropogenic terpenoids in the LA Basin and highlights the need for systematically studying anthropogenic and biogenic terpenoid emissions in urban areas. Supplementary Material File (1033013_0_merged_1746551605.pdf) Download 1.21 MB File (diurnal trends differentiate anthropogenic and biogenic terpenes in the los angeles basin_grl_submitted_for_review.docx) Download 3.93 MB File (si_diurnal trends differentiate anthropogenic and biogenic terpenes in the los angeles basin_grl_submitted_for_review.pdf) Download 2.01 MB Information & Authors Information Version history V1 Version 1 15 May 2025 Peer review timeline Published Geophysical Research Letters Version of Record 24 Feb 2026 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords anthropogenic biogenic terpenes urban air quality volatile chemical products Authors Affiliations Afsara Tasnia 0000-0002-3048-5083 University of California Riverside View all articles by this author Christos Stamatis 0000-0002-7969-189X Virginia Polytechnic Institute and State University View all articles by this author Barbara Barletta University of California, Irvine View all articles by this author Simone Meinardi 0000-0003-4828-9889 University of California, Irvine View all articles by this author Zhizhao Wang 0000-0002-2334-6173 University of California Riverside View all articles by this author Katherine Ball 0000-0002-4399-7571 California Institute of Technology View all articles by this author John D Crounse 0000-0001-5443-729X California Institute of Technology View all articles by this author John H. Seinfeld 0000-0003-1344-4068 California Institute of Technology View all articles by this author Paul O. Wennberg 0000-0002-6126-3854 California Institute of Technology View all articles by this author Donald Ray Blake 0000-0002-8283-5014 University of California, Irvine View all articles by this author Kelley Barsanti 0000-0002-6065-8643 [email protected] NCAR View all articles by this author Funding Information National Oceanic and Atmospheric Administration NA21OAR4310222 Kelley Barsanti Metrics & Citations Metrics Article Usage 199 views 127 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Afsara Tasnia, Christos Stamatis, Barbara Barletta, et al. Diurnal Trends Differentiate Anthropogenic and Biogenic Terpenes in the Los Angeles Basin. Authorea . 15 May 2025. DOI: https://doi.org/10.22541/au.174733537.78499357/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. 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