Person: Barthel, Stefan
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Barthel
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Stefan
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Deutschland, Umweltbundesamt, Fachgebiet IV.2.1 - Informationssysteme Chemikaliensicherheit
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Veröffentlichung GSBL: Giving Germany̷s Most Comprehensive Chemical Substances Data Pool a Convincing Face(2014) Barthel, Stefan; Zischner, Karsten; Minx, GunnarThis paper describes the concept of the user-oriented redesigning process of the Joint Substance Data Pool of the German Federal Government and Federal States (GSBL). The GSBL contains at all relevant information on 63.000 pure chemical substances, 320.000 mixtures of substances and 207.000 concerning legal regulations. Redesigning is necessary, because current and potential users are not satisfied with the usability of the retrieval application and the search result presentation. The substance search is partially so complex that trainings courses and detailed instruction manuals are inquired. In order to achieve a tailor-made solution for current and potential key users as well as for user that have or have not been used the GSBLs retrieval application before, a promising redesigning process is introduced and established usability techniques are utilized. Quelle: Barthel, Stefan Zischner, Karsten; Minx, Gunnar: GSBL: Giving Germany/s Most Comprehensive Chemical Substances Data Pool a Convincing Face / Stefan Barthel ; Karsten Zischner ; Gunnar Minx. -1 S.In: Proceedings of the 28th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management / Jorge Marx Gómez - Oldenburg : bis-Verl.. - (2014). -
ISBN 978-3-8142-2317-9Veröffentlichung Sea salt emission, transport and influence on size-segregated nitrate simulation: a case study in northwestern Europe by WRF-Chem(2016) Chen, Ying-Yuan; Barthel, Stefan; Cheng, Yafang; Birmili, Wolfram; Ma, Nan; Wolke, Ralf; Schüttauf, Stephanie; Ran, Liang; Wehner, Birgit; Nordmann, Stephan; Denier van der Gon, Hugo A.C.; Mu, Quing; Spindler, Gerald; Stieger, Bastian; Müller, Konrad; Zheng, Guang-Jie; Pöschl, Ulrich; Su, Hang; Wiedensohler, AlfredSea salt aerosol (SSA) is one of the major components of primary aerosols and has significant impact on the formation of secondary inorganic particles mass on a global scale. In this study, the fully online coupled WRF-Chem model was utilized to evaluate the SSA emission scheme and its influence on the nitrate simulation in a case study in Europe during 10-20 September 2013. Meteorological conditions near the surface, wind pattern and thermal stratification structure were well reproduced by the model. Nonetheless, the coarse-mode (PM1?-?10) particle mass concentration was substantially overestimated due to the overestimation of SSA and nitrate. Compared to filter measurements at four EMEP stations (coastal stations: Bilthoven, Kollumerwaard and Vredepeel; inland station: Melpitz), the model overestimated SSA concentrations by a factor of 8-20. We found that this overestimation was mainly caused by overestimated SSA emissions over the North Sea during 16-20 September. Over the coastal regions, SSA was injected into the continental free troposphere through an "aloft bridgeŁ (about 500 to 1000?m above the ground), a result of the different thermodynamic properties and planetary boundary layer (PBL) structure between continental and marine regions. The injected SSA was further transported inland and mixed downward to the surface through downdraft and PBL turbulence. This process extended the influence of SSA to a larger downwind region, leading, for example, to an overestimation of SSA at Melpitz, Germany, by a factor of ?~??20. As a result, the nitrate partitioning fraction (ratio between particulate nitrate and the summation of particulate nitrate and gas-phase nitric acid) increased by about 20?% for the coarse-mode nitrate due to the overestimation of SSA at Melpitz. However, no significant difference in the partitioning fraction for the fine-mode nitrate was found. About 140?% overestimation of the coarse-mode nitrate resulted from the influence of SSA at Melpitz. In contrast, the overestimation of SSA inhibited the nitrate particle formation in the fine mode by about 20?% because of the increased consumption of precursor by coarse-mode nitrate formation.Quelle: http://www.atmos-chem-phys.netVeröffentlichung Die Gefahrstoffschnellauskunft GSA - Informationsquelle für Ersteinsatzkräfte(2015) Barthel, Stefan; Minx, Gunnar; Liebscher, BarbaraUnfälle auf Straße, Schiene oder in Industrieanlagen, Katastrophen und Havarien - häufig werden bei Vorfällen dieser Art chemische Stoffe freigesetzt. Erste Aufgabe der eintreffenden Einsatzkräfte ist es dann, umgehend geeignete Maßnahmen einzuleiten, um den Schutz der menschlichen Gesundheit und der Umwelt zu gewährleisten.Quelle: http://crisis-prevention.deVeröffentlichung GSBL2020 - Erfassung und Spezifikation von Anwendungsfällen zur Neukonzeption des GSBL(2016) Barthel, Stefan; Krämer, Thomas; Liebscher, Barbara