David Schaub

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High tropospheric NO2 amounts are occasionally detected by space-borne spectrometers above cloudy scenes. For monitoring of near-ground air pollution such data are not directly applicable because clouds shield the highly polluted planetary boundary layer (PBL). We present a method based on trajectories which implicitly estimates the additional subcloud NO2(More)
Nitrogen dioxide (NO2) vertical tropospheric column densities (VTCs) retrieved from the Global Ozone Monitoring Experiment (GOME) are compared to coincident ground-based tropospheric NO2 columns. The ground-based columns are deduced from in situ measurements at different altitudes in the Alps for 1997 to June 2003, yielding a unique long-term comparison of(More)
The CG animated documentary <i>Surf's Up</i> called for unique production techniques to be leveraged throughout the creation of the film. This half day course presents an in-depth look at several of the key aspects of the production: &#8226; Integration of a live action hand-held camera into the virtual world to allow the movie to be "shot" in a(More)
Saharan dust events at the Jungfraujoch: detection by wavelength dependence of the single scattering albedo and analysis of the events during the years 2001 and 2002 M. Collaud Coen, E. Weingartner, D. Schaub, C. Hueglin, C. Corrigan, M. Schwikowski, and U. Baltensperger MeteoSwiss, Aerological Station, Les Invuardes, CH-1530 Payerne, Switzerland Laboratory(More)
D. Schaub, A. K. Weiss, J. W. Kaiser, A. Petritoli, A. Richter, B. Buchmann, and J. P. Burrows Swiss Federal Laboratories for Materials Testing and Research (EMPA), Ueberlandstrasse 129, CH-8600 Duebendorf, Switzerland Remote Sensing Laboratories, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland Institute of Atmospheric Science and(More)
Phosphodiesterase-5 (PDE-5) inhibitors play an important role in the treatment of complications of cirrhosis. They have been used successfully to treat portopulmonary hypertension (PPHTN) [1–4], a complication in 5 % of subjects with cirrhosis [5]. Additionally, previous studies showed that PDE-5 inhibitors reduced portal pressures and hepatic venous(More)
Comparison of GOME tropospheric NO2 columns with NO2 profiles deduced from ground-based in situ measurements D. Schaub, K. F. Boersma, J. W. Kaiser, A. K. Weiss, D. Folini, H. J. Eskes, and B. Buchmann Swiss Federal Institute for Materials Science and Technology (Empa), Ueberlandstrasse 129, CH-8600 Duebendorf, Switzerland Royal Netherlands Meteorological(More)
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