Zobrazeno 1 - 10
of 2 037
pro vyhledávání: '"W. Frey"'
Autor:
J. L. Nowak, R. Grosz, W. Frey, D. Niedermeier, J. Mijas, S. P. Malinowski, L. Ort, S. Schmalfuß, F. Stratmann, J. Voigtländer, T. Stacewicz
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 4075-4089 (2022)
The Fast Infrared Hygrometer (FIRH), employing open-path tunable diode laser absorption spectroscopy at the wavelengths near the 1364.6896 nm line, was adapted to perform contactless humidity measurements at the Turbulent Leipzig Aerosol Cloud Intera
Externí odkaz:
https://doaj.org/article/3871fc8bd42442f9bcf1eb7c48c25b25
Autor:
I. Papachristou, S. Akaberi, A. Silve, E. Navarro-López, R. Wüstner, K. Leber, N. Nazarova, G. Müller, W. Frey
Publikováno v:
Biotechnology for Biofuels, Vol 14, Iss 1, Pp 1-14 (2021)
Abstract Background Microalgae have attracted considerable interest due to their ability to produce a wide range of valuable compounds. Pulsed Electric Fields (PEF) has been demonstrated to effectively disrupt the microalgae cells and facilitate intr
Externí odkaz:
https://doaj.org/article/4863f9502ef24a38b108e9ec43bcebe6
Autor:
W. Frey, D. Hu, J. Dorsey, M. R. Alfarra, A. Pajunoja, A. Virtanen, P. Connolly, G. McFiggans
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 9393-9409 (2018)
Secondary organic aerosol (SOA) particles have been found to be efficient ice-nucleating particles under the cold conditions of (tropical) upper-tropospheric cirrus clouds. Whether they also are efficient at initiating freezing under slightly warm
Externí odkaz:
https://doaj.org/article/11ef7ffe86f34aaf8f409f7cc82aff68
Autor:
V. Shcherbakov, O. Jourdan, C. Voigt, J.-F. Gayet, A. Chauvigne, A. Schwarzenboeck, A. Minikin, M. Klingebiel, R. Weigel, S. Borrmann, T. Jurkat, S. Kaufmann, R. Schlage, C. Gourbeyre, G. Febvre, T. Lapyonok, W. Frey, S. Molleker, B. Weinzierl
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 11883-11897 (2016)
Aerosols of the volcanic degassing plumes from Mt. Etna and Mt. Stromboli were probed with in situ instruments on board the Deutsches Zentrum für Luft- und Raumfahrt research aircraft Falcon during the contrail, volcano, and cirrus experiment CON
Externí odkaz:
https://doaj.org/article/03b93b38f89f441f9418e43707acfc0d
Autor:
W. Frey, R. Schofield, P. Hoor, D. Kunkel, F. Ravegnani, A. Ulanovsky, S. Viciani, F. D'Amato, T. P. Lane
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 11, Pp 6467-6486 (2015)
In this study we examine the simulated downward transport and mixing of stratospheric air into the upper tropical troposphere as observed on a research flight during the SCOUT-O3 campaign in connection with a deep convective system. We use the Advanc
Externí odkaz:
https://doaj.org/article/ecb933fb568a49d1b6de0918ae83ff61
Autor:
W. Frey, S. Borrmann, F. Fierli, R. Weigel, V. Mitev, R. Matthey, F. Ravegnani, N. M. Sitnikov, A. Ulanovsky, F. Cairo
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 23, Pp 13223-13240 (2014)
The case study presented here focuses on the life cycle of clouds in the anvil region of a tropical deep convective system. During the SCOUT-O3 campaign from Darwin, Northern Australia, the Hector storm system has been probed by the Geophysica high-a
Externí odkaz:
https://doaj.org/article/8ea32b064bb5416aacef2930dfae6c21
Autor:
S. Molleker, S. Borrmann, H. Schlager, B. Luo, W. Frey, M. Klingebiel, R. Weigel, M. Ebert, V. Mitev, R. Matthey, W. Woiwode, H. Oelhaf, A. Dörnbrack, G. Stratmann, J.-U. Grooß, G. Günther, B. Vogel, R. Müller, M. Krämer, J. Meyer, F. Cairo
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 19, Pp 10785-10801 (2014)
In January 2010 and December 2011, synoptic-scale polar stratospheric cloud (PSC) fields were probed during seven flights of the high-altitude research aircraft M-55 Geophysica within the RECONCILE (Reconciliation of essential process parameters for
Externí odkaz:
https://doaj.org/article/8fb75e774fa44e609f8dc865a4e2eeaa
Autor:
W. Woiwode, J.-U. Grooß, H. Oelhaf, S. Molleker, S. Borrmann, A. Ebersoldt, W. Frey, T. Gulde, S. Khaykin, G. Maucher, C. Piesch, J. Orphal
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 20, Pp 11525-11544 (2014)
Vertical redistribution of HNO3 through large HNO3-containing particles associated with polar stratospheric clouds (PSCs) plays an important role in the chemistry of the Arctic winter stratosphere. During the RECONCILE (Reconciliation of essential pr
Externí odkaz:
https://doaj.org/article/18b24114bffb4293a3de46d1b63c3974
Publikováno v:
Chemical Engineering Transactions, Vol 57 (2017)
Recovery of intracellular components from microalgae requires a cell disruption step. In recent years, pulsed electric field (PEF) treatment has been discussed to be an efficient alternative to conventional cell disruption techniques, i.e. homogeniza
Externí odkaz:
https://doaj.org/article/acce75440d4d4aa9a6d43dbe1f830cc7
Autor:
J.-U. Grooß, I. Engel, S. Borrmann, W. Frey, G. Günther, C. R. Hoyle, R. Kivi, B. P. Luo, S. Molleker, T. Peter, M. C. Pitts, H. Schlager, G. Stiller, H. Vömel, K. A. Walker, R. Müller
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 2, Pp 1055-1073 (2014)
Nitric acid trihydrate (NAT) particles in the polar stratosphere have been shown to be responsible for vertical redistribution of reactive nitrogen (NOy). Recent observations by Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP) aboard the C
Externí odkaz:
https://doaj.org/article/3259fcb8445f4fa89b1db83039e84f62