Missing OH Reactivity in a Forest: Evidence for Unknown Reactive Biogenic VOCs

Piero Di Carlo, William H. Brune, Monica Martinez, Hartwig Harder, Robert Lesher, Xinrong Ren, Troy Thornberry, Mary Anne Carroll, Valerie Young, Paul B. Shepson, Daniel Riemer, Eric Apel, Colleen Campbell

Research output: Contribution to journalArticlepeer-review

330 Scopus citations


Forest emissions of biogenic volatile organic compounds (BVOCs), such as isoprene and other terpenes, play a role in the production of tropospheric ozone and aerosols. In a northern Michigan forest, the direct measurement of total OH reactivity, which is the inverse of the OH lifetime, was significantly greater than expected. The difference between measured and expected OH reactivity, called the missing OH reactivity, increased with temperature, as did emission rates for terpenes and other BVOCs. These measurements are consistent with the hypothesis that unknown reactive BVOCs, perhaps terpenes, provide the missing OH reactivity.

Original languageEnglish (US)
Pages (from-to)722-725
Number of pages4
Issue number5671
StatePublished - Apr 30 2004

All Science Journal Classification (ASJC) codes

  • General


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