Výsledky vyhledávání - "Johannes Zielcke"

Akademický článek

The role of open lead interactions in atmospheric ozone variability between Arctic coastal and inland sites

Autor: Peter K. Peterson, Kerri A. Pratt, William R. Simpson, Son V. Nghiem, Lemuel X. Pérez Pérez, Eric J. Boone, Denis Pöhler, Johannes Zielcke, Stephan General, Paul B. Shepson, Udo Frieß, Ulrich Platt, Brian H. Stirm

Publikováno v: Elementa: Science of the Anthropocene (2016)

Abstract Boundary layer atmospheric ozone depletion events (ODEs) are commonly observed across polar sea ice regions following polar sunrise. During March-April 2005 in Alaska, the coastal site of Barrow and inland site of Atqasuk experienced ODEs (O

Externí odkaz: https://doaj.org/article/de87636f69874db9b9cdc88c07d76043

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Detection of O4 absorption around 328 and 419 nm in measured atmospheric absorption spectra

Autor: Ulrich Platt, Stefan Schmitt, Johannes Zielcke, Johannes Lampel, Udo Frieß, Thomas Wagner, Denis Pöhler

Publikováno v: Atmospheric Chemistry and Physics. 18:1671-1683

Retrieving the column of an absorbing trace gas from spectral data requires that all absorbers in the corresponding wavelength range are sufficiently well known. This is especially important for the retrieval of weak absorbers, whose absorptions are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ad72b726246a1373afe64f1bf18708c
https://doi.org/10.5194/acp-18-1671-2018

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The NOx dependence of bromine chemistry in the Arctic atmospheric boundary layer

Publikováno v: Atmospheric Chemistry and Physics. 15:10799-10809

Arctic boundary layer nitrogen oxides (NOx = NO2 + NO) are naturally produced in and released from the sunlit snowpack and range between 10 to 100 pptv in the remote background surface layer air. These nitrogen oxides have significant effects on the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dfb1114ecc4edc42870acdbb7b317b02
https://doi.org/10.5194/acp-15-10799-2015

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Dependence of the vertical distribution of bromine monoxide in the lower troposphere on meteorological factors such as wind speed and stability

Autor: Johannes Zielcke, William R. Simpson, S. J. Walsh, Udo Frieß, Paul B. Shepson, U. Platt, Son V. Nghiem, Kerri A. Pratt, Peter K. Peterson

Publikováno v: Atmospheric Chemistry and Physics, Vol 15, Iss 4, Pp 2119-2137 (2015)

Multiple axis differential absorption spectroscopy (MAX-DOAS) measurements of bromine monoxide (BrO) probed the vertical structure of halogen activation events during March–May 2012 at Barrow, Alaska. An analysis of the BrO averaging kernels and de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3794172ff0b79e48dc7f45d59276e24b
http://www.atmos-chem-phys.net/15/2119/2015/acp-15-2119-2015.pdf

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Detection of O4 absorption around 328 nm and 419 nm in measured atmospheric absorption spectra

Autor: Johannes Zielcke, Denis Pöhler, Thomas Wagner, Johannes Lampel, Udo Frieß, Ulrich Platt, Stefan Schmitt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ae71214bb588bb8e043812c0ad68519
https://doi.org/10.5194/acp-2017-639

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Observations of Bromine Monoxide Transport In the Arctic Sustained on Aerosol Particles

Autor: Peter K. Peterson, Denis Pöhler, Holger Sihler, Johannes Zielcke, Stephan General, Udo Frieß, Ulrich Platt, William R. Simpson, Son V. Nghiem, Paul B. Shepson, Brian H. Stirm, Suresh Dhaniyala, Thomas Wagner, Dana R. Caulton, Jose D. Fuentes, Kerri A. Pratt

The return of sunlight in the polar spring leads to production of reactive halogen species from the surface snowpack, significantly altering the chemical composition of the Arctic near-surface atmosphere and the fate of long-range transported polluta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41fa32adba56f6a96b5e2a961766a0a7
https://doi.org/10.5194/acp-2016-1141

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Photochemical production of molecular bromine in Arctic surface snowpacks

Autor: K. D. Custard, Brian H. Stirm, David J. Tanner, Johannes Zielcke, Thomas A. Douglas, Mark S. Carlsen, Ulrich Platt, S. General, Paul B. Shepson, Kerri A. Pratt, L. Gregory Huey, William R. Simpson, Denis Pöhler

Publikováno v: Nature Geoscience. 6:351-356

Following the spring-time polar sunrise, ozone concentrations in the lower troposphere episodically decline to near-zero levels. Measurements on Alaskan snow and sea ice suggest that photochemical reactions in surface snow serve as a major source of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::acdcad831919885dde96566c589dc191
https://doi.org/10.1038/ngeo1779

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The role of open lead interactions in atmospheric ozone variability between Arctic coastal and inland sites

Autor: Denis Pöhler, Lemuel X. Pérez Pérez, S. General, Son V. Nghiem, Kerri A. Pratt, Paul B. Shepson, Ulrich Platt, Eric J. Boone, Udo Frieß, Brian H. Stirm, Johannes Zielcke, Peter K. Peterson, William R. Simpson

Publikováno v: Elementa: Science of the Anthropocene (2016)
Elem Sci Anth; Vol 4 (2016); 000109

Boundary layer atmospheric ozone depletion events (ODEs) are commonly observed across polar sea ice regions following polar sunrise. During March-April 2005 in Alaska, the coastal site of Barrow and inland site of Atqasuk experienced ODEs (O3< 10 nmo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f80520b0bb516e2c008eefc3ef36d636
https://doi.org/10.12952/journal.elementa.000109

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