• Effective surface albedo due to snow cover of the surrounding area 

  Weihs, P.P.; Lenoble, J.; Blumthaler, M.; Seckmeyer, G.; Philipona, R.; De La Casiniere, A.; Sergent, C.; Martin, T.; Gröbner, J.; Cabot, T.; Masserot, D.; Schmucki, D.; Simic, S.; Rengarajan, G. (Bellingham Wash. : SPIE, 2002)

  Albedo inversion techniques are investigated in this work. Several methods are applied to spectral irradiance data from a measurement campaign held in the German Alps during the spring of 1999. One first method is based ...
• Quality Assurance of Spectral Ultraviolet Measurements in Europe Through the Development of a Transportable Unit (QASUME) 

  Bais, A.F.; Blumthaler, M.; Gröbner, J.; Seckmeyer, G.; Webb, A.R.; Gorts, P.; Koskela, T.; Rembges, D.; Kazadzis, S.; Schreder, J.; Cotton, P.; Kelly, P.; Kouremeti, N.; Rikkonen, K.; Studemund, H.; Tax, R.; Wuttke, S. (Bellingham Wash. : SPIE, 2002)

  QASUME is a European Commission funded project that aims to develop and test a transportable unit for providing quality assurance to UV spectroradiometric measurements conducted in Europe. The comparisons will be performed ...
• Radiation measurements at the German antarctic Neumayer Station 

  Wuttke, S.; Seckmeyer, G.; Schrems, O.; König-Langlo, G. (Bellingham Wash. : SPIE, 2005)

  During the austral summer 2003/04 the Institute for Meteorology and Climatology, University of Hannover, Germany, has deployed a newly developed spectroradiometric system at the permanent German Antarctic Neumayer Station ...
• 2003 North American interagency intercomparison of ultraviolet spectroradiometers: Scanning and spectrograph instruments 

  Lantz, Kathleen O.; Disterhoft, Patrick; Slusser, James R.; Gao, Wie; Berndt, Jerry L.; Bernhard, Germar; Bloms, Sarah; Booth, Charles Rockwell; Ehramjian, James C.; Harrison, Lee C.; Janson, George T.; Johnston, Paul; Kiedron, Peter W.; McKenzie, Richard L.; Kimlin, Michael G.; Neale, Patrick J.; O'Neill, Michael; Quang, Vi V.; Seckmeyer, Gunther J.; Taylor, Thomas; Wuttke, Sigrid; Michalsky Jr., Joseph J. (Bellingham Wash. : SPIE, 2008)

  The fifth North American Intercomparison of Ultraviolet Monitoring Spectroradiometers was held June 13 to 21, 2003 at Table Mountain outside of Boulder, Colorado, USA. The main purpose of the Intercomparison was to assess ...
• Intercomparison of solar UV direct irradiance spectral measurements at Izana in June 2005 

  Bais, A.; Blumthaler, M.; Webb, A.; Seckmeyer, G.; Thiel, S.; Kazadzis, S.; Redondas, A.; Kift, R.; Kouremeti, N.; Schallhart, B.; Schmitt, R.; Pisulla, D.; Diaz, J.P.; Garcia, O.; Diaz Rodriguez, A.M.; Smedley, A. (Bellingham Wash. : SPIE, 2005)

  Spectral measurements of direct solar ultraviolet irradiance are very important for many applications in the field of atmospheric sciences. Despite its usefulness, few UV monitoring sites include such measurements in their ...
• Biologic effects of light: An enlighting prospective 

  Reichrath, J.; Berg, K.; Emmert, S.; Lademann, J.; Seckmeyer, G.; Zastrow, L.; Vogt, T.; Holick, M.F. (Kapandriti : International Institute of Anticancer Research, 2016)

  During the past several decades our knowledge on the effects of light on human health and its underlying mechanisms has been expanded exponentially. These findings have led to an enormous scientific progress including new ...
• Influence of surface reflectivity on radiation in the Antarctic environment 

  Smolskaia, I.; Wuttke, S.; Seckmeyer, G.; Michael, K. (Bellingham Wash. : SPIE, 2006)

  We demonstrate the importance of surface reflectivity for the radiation field in polar regions by a combination of measurements and radiative transfer calculations. Results from measurements of spectral albedo, radiance ...
• Solar simulators for healthy Vitamin D synthesis 

  Seckmeyer, G.; Schrempf, M.; Stührmann, A.; Niedzwiedz, A. (Kapandriti : International Institute of Anticancer Research, 2016)

  Background/Aim: The angular distribution of solar radiance and its spectral characteristics is required for the determination of Vitamin D3 production in humans. Materials and Methods: The Vitamin D3 weighted exposure can ...
• Data Quality Objectives (DQO) for solar ultraviolet radiation 

  Diaz, S.; Fioletov, V.; Herman, J.; Jalkanend, L.; Janjai, S.; Kjeldstad, B.; Koide, T.; Seckmeyer, G.; Simon, P.; Weatherhead, B.; Webb, A. (College Park, MD : American Institute of Physics (AIP), 2009)

  General objectives for measuring solar ultraviolet (UV) irradiance are: a) To establish a UV climatology by long‐term monitoring, e.g. within a network, b) To detect trends in global UV irradiance, c) To provide datasets ...
• New spectroradiometers complying with the NDSC standards 

  Wuttke, S.; Seckmeyer, G.; Bernhard, G.; Ehramjian, J.; Mckenzie, R.; Johnston, P.; O'Neill, M. (Massachusetts : American Meteorological Society, 2006)

  The investigation of the effect of solar ultraviolet (UV) and visible radiation on biological organisms and photochemical reactions requires spectral measurements of the desired radiation parameters of high accuracy. The ...
• Analysis of Gravitational-Wave Signals from Binary Neutron Star Mergers Using Machine Learning 

  Schäfer, Marlin Benedikt (Hannover : Gottfried Wilhelm Leibniz Universität, 2019)

  Gravitational waves are now observed routinely. Therefore, data analysis has to keep up with ever improving detectors. One relatively new tool to search for gravitational wave signals in detector data are machine learning ...
• PeC3 Spring School on the Introduction on Numerical Modelling of Differential Equations - Programming Exercises 

  Klein, Ole; Görmer, Robin; Thiele, Philipp (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  Programming Exercises 1-7
• Precourse to the PeC3 Summer School on Introduction on Numerical Modelling with Differential Equations 

  Klein, Ole (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  Precourse to the PeC3 Summer School on Introduction on Numerical Modelling with Differential Equations
• PeC3 Spring School on Introduction to Numerical Modeling with Differential Equations 

  Wick, Thomas; Bastian, Peter (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  This spring school is part of the DAAD (German academic exchange service) program PeC3 : Peruvian Competence Center of Scientific Computing (https://www.pec3.org/).
• Guidelines for developing optical clocks with 10-18 fractional frequency uncertainty 

  Abdel-Hafiz, Moustafa; Ablewski, Piotr; Al-Masoudi, Ali; Álvarez Martínez, Héctor; Balling, Petr; Barwood, Geoffrey; Benkler, Erik; Bober, Marcin; Borkowski, Mateusz; Bowden, William; Ciurylo, Roman; Cybulski, Hubert; Didier, Alexandre; Dolezal, Miroslav; Dörscher, Sören; Falke, Stephan; Godun, Rachel M.; Hamid, Ramiz; Hill, Ian R.; Hobson, Richard; Huntemann, Nils; Le Coq, Yann; Le Targat, Rodolphe; Legero, Thomas; Lindvall, Thomas; Lisdat, Christian; Lodewyck, Jerome; Margolis, Helen S.; Mehlstäubler, Tanja E.; Peik, Ekkehard; Pelzer, Lennart; Pizzocaro, Marco; Rauf, Benjamin; Rolland, Antoine; Scharnhorst, Nils; Schioppo, Marco; Schmidt, Piet O.; Schwarz, Roman; Senel, Cagri; Spethmann, Nicolas; Sterr, Uwe; Tamm, Christian; Thomsen, Jan W.; Vianello, Alvise; Zawada, Michal (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  There has been tremendous progress in the performance of optical frequency standards since the first proposals to carry out precision spectroscopy on trapped, single ions in the 1970s. The estimated fractional frequency ...
• Entanglement Swapping with Semiconductor-Generated Photons Violates Bell’s Inequality 

  Zopf, Michael; Keil, Robert; Chen, Yan; Yang, Jingzhong; Chen, Disheng; Ding, Fei; Schmidt, Oliver G. (College Park, MA : American Physical Society, 2019)

  Transferring entangled states between photon pairs is essential in quantum communication. Semiconductor quantum dots are the leading candidate for generating polarization-entangled photons deterministically. Here we show ...
• Optische Kohärenztomografie und adaptive Optik für die bildgestützte Augenlaserchirurgie 

  Matthias, Ben (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  In der Ophthalmologie haben sich Femtosekundenlaser von spezialisierten Instrumenten für die LASIK zur Erzeugung von Hornhautlappen zu vielseitigen Werkzeugen für die Hornhaut- und Kataraktchirurgie entwickelt. In naher ...
• ADWICE: Advanced diagnosis and warning system for aircraft icing environments 

  Tafferner, A.; Hauf, T.; Leifeld, C.; Hafner, T.; Leykauf, H.; Voigt, U. (Boston, Massachusetts : American Meteorological Society, 2003)

  This paper describes the design of the Advanced Diagnosis and Warning System for Aircraft Icing Environments (ADWICE) and presents results for two different icing weather situations with typical icing conditions. ADWICE ...
• Klimawandel - Schicksal oder bewältigbare Herausforderung 

  Hauf, Thomas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  no abstract available
• Der achte Tag : Oder Gott sah, dass es nicht gut war. Ein Dialog zwischen Grete, Mephisto und Gott 

  Hauf, Thomas (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)

  no abstract available

View more