Skip to main content

7 Result(s)

within C. Wehrli Remove this filter

and

  1. No Access

    Article

    Detection of Solar Rotational Variability in the Large Yield RAdiometer (LYRA) 190 – 222 nm Spectral Band

    We analyze the variability of the spectral solar irradiance during the period from 7 January 2010 until 20 January 2010 as measured by the Herzberg channel (190 – 222 nm) of the Large Yield RAdiometer (LYRA) onbo...

    A. V. Shapiro, A. I. Shapiro, M. Dominique, I. E. Dammasch, C. Wehrli… in Solar Physics (2013)

  2. No Access

    Chapter and Conference Paper

    Ground-Based Aerosol Optical Depth Inter-Comparison Campaigns at EUSAAR Sites in Athens, Greece

    This work summarises an aerosol optical depth (AOD) inter-comparison campaign conducted from June to September 2009 in Athens under the EUSAAR (European Super-Sites for Atmospheric Aerosol Research) Programme....

    S. Nyeki, C. H. Halios, K. Eleftheriadis… in Advances in Meteorology, Climatology and A… (2013)

  3. No Access

    Article

    A century of apparent atmospheric transmission over Davos, Switzerland

    Pyrheliometer measurements have been carried out at the Physikalisches-Meteorologisches Observatorium Davos from 1909 to present which results in the longest stationary direct irradiance record worldwide. A va...

    D. Lachat, C. Wehrli in Theoretical and Applied Climatology (2012)

  4. No Access

    Chapter and Conference Paper

    Modeling VIRGO Spectral and Bolometric Irradiances with MDI Data

    The last solar activity minimum in 1996 was characterized by several periods without any sunspots or faculae visible on the solar disk. Between these extremely quiet intervals, from time to time a single activ...

    M. Steinegger, A. Hanslmeier, W. Otruba, P. N. Brandt, Z. Eker… in The Dynamic Sun (2001)

  5. No Access

    Article

    Tri-Phonic Helioseismology: Comparison of Solar p Modes Observed by the Helioseismology Instruments Aboard SOHO

    The three helioseismology instruments aboard SOHO observe solar p modes in velocity (GOLF and MDI) and in intensity (VIRGO and MDI). Time series of two months duration are compared and confirm that the instrum...

    T. Toutain, T. Appourchaux, F. Baudin, C. Fröhlich, A. Gabriel… in Solar Physics (1997)

  6. No Access

    Chapter

    Tri-Phonic Helioseismology: Comparison of Solar p Modes Observed by the Helioseismology Instruments Aboard SOHO

    The three helioseismology instruments aboard SOHO observe solar p modes in velocity (GOLF and MDI) and in intensity (VIRGO and MDI). Time series of two months duration are compared and confirm that the instalment...

    T. Toutain, T. Appourchaux, F. Baudin, C. Fröhlich… in The First Results from SOHO (1997)

  7. No Access

    Article

    General principles governing irreversible processes

    The orthogonality condition proposed by Ziegler as a generalization of Onsager’s relations and the equivalent principle of maximal rate of entropy production are derived from the postulate suggested by physics...

    H. Ziegler, C. Wehrli in Il Nuovo Cimento B (1971-1996) (1986)