Airborne measurements of BrO and the sum of HOBr and Br2 over the Tropical West Pacific from 1 to 15 km during the CONvective TRansport of Active Species in the Tropics (CONTRAST) experiment

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dc.contributor.authorChen, Dexian
dc.contributor.authorHuey, L. Gregory
dc.contributor.authorTanner, David J.
dc.contributor.authorSalawitch, Ross J.
dc.contributor.authorAnderson, Daniel C.
dc.contributor.authorWales, Pamela A.
dc.contributor.authorPan, Laura L.
dc.contributor.authorAtlas, Elliot L.
dc.contributor.authorHornbrook, Rebecca S.
dc.contributor.authorApel, Eric C.
dc.contributor.authorBlake, Nicola J.
dc.contributor.authorCampos, Teresa L.
dc.contributor.authorDonets, Valeria
dc.contributor.authorFlocke, Frank M.
dc.contributor.authorHall, Samuel R.
dc.contributor.authorHanisco, Thomas F.
dc.contributor.authorHills, Alan J.
dc.contributor.authorHonomichl, Shawn B.
dc.contributor.authorJensen, Jørgen B.
dc.contributor.authorKaser, Lisa
dc.contributor.authorMontzka, Denise D.
dc.contributor.authorNicely, Julie M
dc.contributor.authorReeves, Michael J.
dc.contributor.authorRiemer, Daniel D.
dc.contributor.authorSchauffler, Sue M.
dc.contributor.authorUllmann, Kirk
dc.contributor.authorWeinheimer, Andrew J.
dc.contributor.authorWolfe, Glenn M.
dc.date.accessioned2020-09-21T15:46:22Z
dc.date.available2020-09-21T15:46:22Z
dc.date.issued2016-10-13
dc.description.abstractA chemical ionization mass spectrometer was used to measure BrO and HOBr + Br₂ over the Tropical West Pacific Ocean within the altitude range of 1 to 15 km, during the CONvective TRansport of Active Species in the Tropics (CONTRAST) campaign in 2014. Isolated episodes of elevated BrO (up to 6.6 pptv) and/or HOBr + Br₂ (up to 7.3 pptv) were observed in the tropical free troposphere (TFT) and were associated with biomass burning. However, most of the time we did not observe significant BrO or HOBr + Br₂ in the TFT and the tropical tropopause layer (TTL) above our limits of detection (LOD). The 1 min average LOD for BrO ranged from 0.6 to 1.6 pptv and for HOBr + Br₂ ranged from 1.3 to 3.5 pptv. During one flight, BrO observations from the TTL to the extratropical lowermost stratosphere were used to infer a profile of inorganic bromine (Bry). Based on this profile, we estimated the product gas injection of bromine species into the stratosphere to be 2 pptv. Analysis of Bry partitioning further indicates that BrO levels are likely very low in the TFT environment and that future studies should target the measurement of HBr or atomic Br.en_US
dc.description.sponsorshipD.C., L.G.H., and D.J.T. were supportedby the NSF grant 1262033. R.J.S., P.A.W.,D.C.A., and JMN received support fromthe NASA Atmospheric Composition:Modeling and Analysis Program underNNH12ZDA001N-ACMAP and from NSFunder grant 1261657. E.A. and V.T. weresupported by the NSF AGS grant1261689. G.M.W., D.C.A., and T.F.H.received support from the NASA UpperAtmospheric Research Program underNNH12ZDA001N-UACO. The authorswould like thank the CONTRAST teamand the GV crew. CONTRAST data areavailable online at http://data.eol.ucar.edu/master_list/?project=CONTRAST.CONTRAST data are managed by theEarth Observing Laboratory of theNational Center for AtmosphericResearch (NCAR/EOL). NCAR is spon-sored by the National ScienceFoundation.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016JD025561en_US
dc.format.extent19 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m22gan-svir
dc.identifier.citationChen, D., et al. (2016), Airbornemeasurements of BrO and the sum ofHOBr and Br2over the Tropical WestPacific from 1 to 15 km during theCONvective TRansport of Active Speciesin the Tropics (CONTRAST) experiment,J. Geophys. Res. Atmos., 121,12,560–12,578, doi:10.1002/2016JD025561.en_US
dc.identifier.urihttps://doi.org/10.1002/2016JD025561
dc.identifier.urihttp://hdl.handle.net/11603/19695
dc.language.isoen_USen_US
dc.publisherAGU Pubicationen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Physics Department
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleAirborne measurements of BrO and the sum of HOBr and Br2 over the Tropical West Pacific from 1 to 15 km during the CONvective TRansport of Active Species in the Tropics (CONTRAST) experimenten_US
dc.typeTexten_US

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