edu.ucar.opensky::articles:10441 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T14:09:41.006643 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7nc61pg A New interpretation of total column BrO during Arctic spring 2010-11-03T00:00:00Z publication https://n2t.org/ark:/85065/d7nc61pg https://doi.org/10.1029/2010GL043798 Salawitch, R. author Canty, T. author Kurosu, T. author Chance, K. author Liang, Q. author Da Silva, A. author Pawson, S. author Nielsen, J. author Rodriguez, J. author Bhartia, P. author Liu, X. author Huey, L. author Liao, J. author Stickel, R. author Tanner, D. author Dibb, J. author Simpson, W. author Donohoue, D. author Weinheimer, Andrew author Flocke, Frank M. author Knapp, David author Montzka, Denise D. author Neuman, J. author Nowak, J. author Ryerson, T. author Oltmans, S. author Blake, D. author Atlas, E. author Kinnison, Douglas E. author Tilmes, Simone author Pan, Laura L. author Hendrick, F. author Van Roozendael, M. author Kreher, K. author Johnston, P. author Gao, R. author Johnson, B. author Bui, T. author Chen, G. author Pierce, R. author Crawford, J. author Jacob, D. author UCAR/NCAR - Library publisher Emission of bromine from sea-salt aerosol, frost flowers, ice leads, and snow results in the nearly complete removal of surface ozone during Arctic spring. Regions of enhanced total column BrO observed by satellites have traditionally been associated with these emissions. However, airborne measurements of BrO and O3 within the convective boundary layer (CBL) during the ARCTAS and ARCPAC field campaigns at times bear little relation to enhanced column BrO. We show that the locations of numerous satellite BrO "hotspots" during Arctic spring are consistent with observations of total column ozone and tropopause height, suggesting a stratospheric origin to these regions of elevated BrO. Tropospheric enhancements of BrO large enough to affect the column abundance are also observed, with important contributions originating from above the CBL. Closure of the budget for total column BrO, albeit with significant uncertainty, is achieved by summing observed tropospheric partial columns with calculated stratospheric partial columns provided that natural, short-lived biogenic bromocarbons supply between 5 and 10 ppt of bromine to the Arctic lowermost stratosphere. Proper understanding of bromine and its effects on atmospheric composition requires accurate treatment of geographic variations in column BrO originating from both the stratosphere and troposphere. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication An edited version of this paper was published by AGU. Copyright 2010 American Geophysical Union. None eng geoscientificInformation