Bitte wenden Sie jetzt – Das Auto der Zukunft von Eckard Helmers WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Oktober 2009. ISBN: 978-3-527-32648-8. 204 Seiten, gebunden. €?24,90. http://www.wiley-vch-macht-neugierig.de/02_helmers/buch/bitte_wenden.php

Eckard Helmers rekapituliert die Geschichte des Automobils von den ersten Prototypen bis zum „?lschock“ 2008 und stellt ausführlich dar, um welche Schadstoffe Politiker, Lobbyisten und Umweltschützer seit Jahren streiten und welche alternativen Antriebe es bereits gibt. Detailliert wird erkl?rt, was beim Autokauf zu beachten ist, wenn man einen Beitrag zum Erhalt der Umwelt leisten m?chte. Schlie?lich entwirft Helmers eine mobile Zukunftsvision, in der Elektroantriebe eine zentrale Rolle spielen. Sein Buch ist ein engagiertes Pl?doyer für einen grundlegenden Bewusstseinswandel.     

An examination of the 6:00 a.m.-9:00 a.m. measurements of ozone precursors in the New York City metropolitan area

In recent years, ambient measurements of hourly ozone precursor concentrations, namely speciated and total nonmethane organic compounds (NMOCs), have become available through the Photochemical Assessment Monitoring Stations (PAMS) program. Prior to this, NMOCs were measured in the central business district using a canister to obtain the 3-hr integrated sample for the 6:00 a.m.-9:00 a.m. period. Such sampling had been carried out annually for nearly a decade at three locations in the New York City metropolitan area. The intent of these measurements, along with measurements of the other ozone precursor, NO(x), was to provide an understanding of ozone formation and the emissions loading and mix in the urban area. The analysis of NMOC and NO(x) measurements shows a downward trend in the case of NMOC. In addition, we compared the canister-based NMOC concentrations with data obtained from the PAMS program for the 6:00 a.m.-9:00 a.m. period. Analysis of the NMOC concentrations reveals poor spatial correlation between the various monitors, reflecting the effect of localized emissions. This suggests that NMOC measurements made at a single location cannot be viewed as representative of the entire region. On the other hand, correlations were found to be higher among the NO(x) monitors, indicating the commonality of emission