| Title: | Missing OH reactivity in a forest: evidence for unknown reactive biogenic VOCs |
| Author(s): | Di Carlo P; Brune WH; Martinez M; Harder H; Lesher R; Ren X; Thornberry T; Carroll MA; Young V; Shepson PB; Riemer D; Apel E; Campbell C; |
| Address: | "Department of Meteorology, Pennsylvania State University, University Park, PA 16802, USA. piero.dicarlo@aquila.infn.it" |
| ISSN/ISBN: | 1095-9203 (Electronic) 0036-8075 (Linking) |
| Abstract: | "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" |
| Keywords: | Aerosols *Atmosphere Butadienes/analysis Hemiterpenes/analysis Hydroxyl Radical/analysis/*chemistry Michigan Organic Chemicals/analysis/*chemistry Ozone/analysis/chemistry Pentanes/analysis Sunlight Temperature Terpenes *Trees; |
| Notes: | "MedlineDi Carlo, Piero Brune, William H Martinez, Monica Harder, Hartwig Lesher, Robert Ren, Xinrong Thornberry, Troy Carroll, Mary Anne Young, Valerie Shepson, Paul B Riemer, Daniel Apel, Eric Campbell, Colleen eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2004/05/01 Science. 2004 Apr 30; 304(5671):722-5. doi: 10.1126/science.1094392" |
