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Variability-lifetime relationship for organic trace gases: A novel aid to compound identification and estimation of HO concentrations

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dc.contributor.author Williams, J.
dc.contributor.author Fischer, H.
dc.contributor.author Harris, G.W.
dc.contributor.author Crutzen, P.J.
dc.contributor.author Hoor, P.
dc.contributor.author Hansel, A.
dc.contributor.author Holzinger, R.
dc.contributor.author Warneke, C.
dc.contributor.author Lindinger, W.
dc.contributor.author Scheeren, B.
dc.contributor.author Lielieveld, J.
dc.date.accessioned 2010-06-10T18:52:49Z
dc.date.available 2010-06-10T18:52:49Z
dc.date.issued 2000
dc.identifier.citation J. Geophys. Res., Atmospheres, 105, 20,473-20,486 en
dc.identifier.uri http://hdl.handle.net/10315/4179
dc.description.abstract In this study we report aircraft‐borne measurements of organic species made during March 1998 in Surinam, an unpolluted region on the northeast coast of South America Measurements included the following: CO by tunable diode laser; a wide variety of organics including acetone, acetonitrile, and isoprene by proton transfer mass spectrometry (PTR‐MS); and nonmethane hydrocarbon measurements by gas chromatography‐flame ionization detection. Here we compare the standard deviation of the natural logarithm of the mixing ratio (Sigma_lnX) to the estimated lifetime of these species. This relationship has been used to support identification of masses measured by the PTR‐MS; ascertain the consistency and quality of hydrocarbon measurement data; and to provide information concerning sinks of important trace species. A selection of the data is used to indirectly determine an average HO concentration of 2.0 × 105 molecules cm−3 along the back trajectory for air encountered during the Large‐Scale Biosphere‐Atmosphere Experiment in Amazonia‐Cooperative LBA Airborne Regional Experiment (LBA‐CLAIRE) measurement campaign between 0–1 km over the tropical rain forest. The lower than expected HO concentration derived could have been caused by significant atmospheric or oceanic photochemical production of acetone and MEK along the back trajectory. en
dc.language.iso en en
dc.publisher AGU en
dc.title Variability-lifetime relationship for organic trace gases: A novel aid to compound identification and estimation of HO concentrations en
dc.type Article en
dc.rights.journal http://www.agu.org/journals/jd/ en

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