Boreas Tgb 10 Oxidant Flux Data Over The Ssa Nasa Tm 2000 209891 Vol 242 Apr 10 2001

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781724037893
Total Pages : 26 pages
Book Rating : 4.0/5 (378 download)

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Download or read book Boreas Tgb-10 Oxidant Flux Data Over the Ssa written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-25 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The BOREAS TGB-10 team collected several trace gas data sets in its efforts to determine the role of biogenic hydrocarbon emissions with respect to boreal forest carbon cycles. This oxidant data set contains measured peroxide (H2O2 and total organic peroxides (ROOH)) and ozone concentrations as well as H2O2 and ROOH deposition velocities. These data were obtained at the SSA-OJP site during the summer of 1994. Measurements were made from May to September 1994. The data are stored in tabular ASCII files. Some important results were: (1) Ozone concentrations were consistently low, 20-30 ppb, during the summer of 1994. (2) Peroxide concentrations showed a seasonal variation with highest concentrations occurring in July (IFC-2). (3) Midday H2O2 levels averaged around 1.4 ppb during IFC-2 and 0.4 - 0.5 ppb during IFC's 1 and 3. (4) Midday organic peroxide concentrations were lower, averaging 0.8 ppb during IFC-2, and 0.4 - 0.5 ppb during IFC's 1 and 3. (5) The rough pine forest canopy serves as a significant sink for H2O2. (6) Midday H2O2 deposition velocities averaged 4 - 7 cm/s. (7) Organic peroxide deposition velocities (measured as total ROOH) were approximately 40% as large as those of H2O2. Hall, Forrest G. (Editor) and Conrad, Sara K. (Editor) and Westberg, Hal and Hall, Brad and Jackson, Andrea V. Goddard Space Flight Center NASA/TM-2000-209891/VOL242, NAS 1.15:209891/VOL242, Rept-2000-03136-0/VOL242