References

ACPD

Atmospheric Chemistry and Physics Discussions

ACPD

1680-7375

Copernicus GmbH

Göttingen, Germany

10.5194/acpd-11-26173-2011

Analysis of satellite-derived Arctic tropospheric BrO columns in conjunction with aircraft measurements during ARCTAS and ARCPAC

Choi

¹ Wang

¹ Salawitch

R. J.

² Canty

² Joiner

³ Zeng

¹ Kurosu

T. P.

⁴ ¹³ Chance

⁴ Richter

⁵ Huey

L. G.

¹ Liao

¹ Neuman

J. A.

⁶ ⁷ Nowak

J. B.

⁶ ⁷ Dibb

J. E.

⁸ Weinheimer

A. J.

⁹ Diskin

¹⁰ Ryerson

T. B.

⁷ da Silva

³ Curry

¹ Kinnison

⁹ Tilmes

⁹ Levelt

P. F.

¹¹ ¹²

Georgia Institue of Technology, Atlanta, GA, USA

University of Maryland College Park, College Park, MD, USA

NASA Goddard Space Flight Center, Greenbelt, MD, USA

Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA

Institute of Environmental Physics, University of Bremen, Bremen, Germany

Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, Boulder, CO, USA

NOAA Earth System Research Laboratory, Boulder, CO, USA

University of New Hampshire, Durham, NH, USA

National Center for Atmospheric Research, Boulder, CO, USA

NASA Langley Research Center, Hampton, VA, USA

Royal Netherlands Meteorological Institute (KNMI), De Bilt, The Netherlands

University of Technology Eindhoven, Eindhoven, The Netherlands

now at: NASA Jet Propulsion Laboratory, Pasadena, CA, USA

21 09 2011

11 9 26173 26243

This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

This article is available from http://www.atmos-chem-phys-discuss.net/11/26173/2011/acpd-11-26173-2011.html

The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/11/26173/2011/acpd-11-26173-2011.pdf

We derive estimates of tropospheric BrO column amounts during two Arctic field campaigns in 2008 using information from the satellite UV nadir sensors Ozone Monitoring Instrument (OMI) and the second Global Ozone Monitoring Experiment (GOME-2) as well as estimates of stratospheric BrO columns from a model simulation. The sensitivity of the satellite-derived tropospheric BrO columns to various parameters is investigated using a radiative transfer model. We conduct a comprehensive analysis of satellite-derived tropospheric BrO columns including a detailed comparison with aircraft in-situ observations of BrO and related species obtained during the field campaigns. In contrast to prior expectation, tropospheric BrO, when present, existed over a broad range of altitudes. Our results show reasonable agreement between tropospheric BrO columns derived from the satellite observations and columns found using aircraft in-situ BrO. After accounting for the stratospheric contribution to total BrO column, several events of rapid BrO activation due to surface processes in the Arctic are apparent in both the OMI and GOME-2 based tropospheric columns. The wide orbital swath of OMI allows examination of the evolution of tropospheric BrO on about hourly time intervals near the pole. Low pressure systems, strong surface winds, and high planetary boundary layer heights are associated with the observed tropospheric BrO activation events.

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