Editing Terpenoid (section)

==Impact on aerosols==
In air, terpenoids are converted into various species, such as [[aldehyde]]s, [[hydroperoxide]]s, organic nitrates, and [[epoxide]]s<ref name="WennbergScienceDaily">[https://www.sciencedaily.com/releases/2009/08/090806141518.htm Organic Carbon Compounds Emitted By Trees Affect Air Quality], ScienceDaily, Aug. 7, 2009</ref> by short-lived [[free radicals]] (like the [[hydroxyl radical]]) and to a lesser extent by [[ozone]].<ref name="IupacDatasheetIsopreneozone">IUPAC Subcommittee on Gas Kinetic Data Evaluation – [http://www.iupac-kinetic.ch.cam.ac.uk/datasheets/pdf/Ox_VOC7_O3_CH2C%28CH3%29CHCH2.pdf Data Sheet Ox_VOC7], 2007</ref> These new species can dissolve into water droplets and contribute to [[aerosol]] and [[haze]] formation.<ref name="PaulotScienceNews">[https://www.sciencenews.org/article/source-haze A source of haze], ScienceNews, August 6, 2009</ref> [[Secondary organic aerosol|Secondary organic aerosols]] formed from this pathway may have atmospheric impacts.<ref>{{Cite journal |last1=D'Ambro |first1=Emma L. |last2=Schobesberger |first2=Siegfried |last3=Gaston |first3=Cassandra J. |last4=Lopez-Hilfiker |first4=Felipe D. |last5=Lee |first5=Ben H. |last6=Liu |first6=Jiumeng |last7=Zelenyuk |first7=Alla |last8=Bell |first8=David |last9=Cappa |first9=Christopher D. |last10=Helgestad |first10=Taylor |last11=Li |first11=Ziyue |date=2019-09-05 |title=Chamber-based insights into the factors controlling epoxydiol (IEPOX) secondary organic aerosol (SOA) yield, composition, and volatility |url=https://acp.copernicus.org/articles/19/11253/2019/ |journal=Atmospheric Chemistry and Physics |language=English |volume=19 |issue=17 |pages=11253–11265 |doi=10.5194/acp-19-11253-2019 |issn=1680-7316|doi-access=free |bibcode=2019ACP....1911253D |hdl=10138/305801 |hdl-access=free }}</ref>

As an example the [[Blue Ridge Mountains]] in the U.S. and [[Blue Mountains (New South Wales)|Blue Mountains of New South Wales]] in Australia are noted for having a bluish color when seen from a distance. Trees put the "blue" in Blue Ridge, from their terpenoids released into the atmosphere.<ref>{{cite book| vauthors = Johnson AW |title=Invitation To Organic Chemistry|publisher=Jones & Bartlett Learning |date=1998|page= [https://archive.org/details/invitationtoorga0000john/page/261 261] |isbn= 978-0-7637-0432-2 |url=https://archive.org/details/invitationtoorga0000john|url-access=registration|quote=blue mountains chemical terpene.}}</ref><ref>{{cite web |title=Blue Ridge Parkway, Frequently Asked Questions |publisher=National Park Service |year=2007 |url=http://www.nps.gov/blri/faqs.htm |access-date=December 29, 2007 |archive-date=December 28, 2007 |archive-url=https://web.archive.org/web/20071228054036/http://www.nps.gov/blri/faqs.htm |url-status=live }}</ref><ref>{{Cite web |last=CSIRO |title=Beating the eucalypt blues – new ways to model air quality |url=https://www.csiro.au/en/news/all/articles/2016/april/beating-eucalypt-blues-new-ways-model-air-quality |access-date=2023-12-10 |website=www.csiro.au |language=en}}</ref>