Results 31 to 40 of about 17,886 (205)

Solar spectral irradiance variability in cycle 24: observations and models

Journal of Space Weather and Space Climate, 2016
Utilizing the excellent stability of the Ozone Monitoring Instrument (OMI), we characterize both short-term (solar rotation) and long-term (solar cycle) changes of the solar spectral irradiance (SSI) between 265 and 500 nm during the ongoing cycle 24. We
Marchenko Sergey V., DeLand Matthew T., Lean Judith L.   +2 more
doaj   +1 more source

Advancements in solar spectral irradiance measurements by the TSIS-1 spectral irradiance monitor and its role for long-term data continuity

Journal of Space Weather and Space Climate
The first implementation of NASA’s Total and Spectral Solar Irradiance Sensor (TSIS-1) launched on December 15th, 2017, and was integrated into the International Space Station (ISS) to measure both the total solar irradiance (TSI) and the solar spectral ...
Richard Erik, Coddington Odele, Harber Dave, Chambliss Michael, Penton Steven, Brooks Keira, Charbonneau Luke, Peck Courtney, Béland Stéphane, Pilewskie Peter, Woods Tom   +10 more
doaj   +1 more source

Primary Production: Sensitivity to Surface Irradiance and Implications for Archiving Data

Frontiers in Marine Science, 2017
An equation is derived to express the sensitivity of daily, watercolumn production by phytoplankton in the ocean to variations in irradiance at the sea surface.
Trevor Platt, Shubha Sathyendranath, George N. White, Thomas Jackson, Stéphane Saux Picart, Heather Bouman   +5 more
doaj   +1 more source

Performance Evaluation of Red Light-Emitting Diodes for Therapeutic Photobiomodulation Device Design [PDF]

Iranian Journal of Medical Physics
Introduction: Photobiomodulation (PBM) therapy relies on precise control of optical parameters such as wavelength, irradiance, and beam geometry to achieve therapeutic efficacy.
Mohammad Reza Rashidian Vaziri, Majid HasanAbadi, Amirhossein Fathabadi, Mona Alikhanzadeh, Ameneh Sazgarnia   +4 more
doaj   +1 more source

Creation of the GSFCSSI2 Composite Solar Spectral Irradiance Data Set

Earth and Space Science, 2019
Solar spectral irradiance (SSI) is a key driver for the Earth's energy budget. Characterizing the spectral and temporal variations in SSI from measurements over multiple decades relies on the creation of a composite SSI product that merges data from ...
Matthew T. DeLand, Linton E. Floyd, Sergey Marchenko, Ramaswamy Tiruchirapalli   +3 more
doaj   +1 more source

Reconstruction of the solar spectral UV irradiance for nowcasting of the middle atmosphere state on the basis of LYRA measurements [PDF]

Atmospheric Chemistry and Physics, 2008
The LYRA instrument onboard ESA PROBA2 satellite will provide 6-hourly solar irradiance at the Lyman-alpha (121.6 nm) and the Herzberg continuum (~200–220 nm wavelength range). Because the nowcasting of the neutral and ionic state of the middle
T. Egorova, E. Rozanov, J.-F. Hochedez, W. Schmutz   +3 more
doaj  

Ultraviolet Spectral Irradiance Scale comparison: 210 nm to 300 nm

, 1998
Comparison of the irradiances from a number of ultraviolet spectral irradiance standards, based on different physical principles, showed agreement to within their combined standard uncertainties as assigned to them by NIST.
Thompson, A; Early, EA; O'Brian, TR
core   +1 more source

Solar Irradiance Variability: Comparisons of Models and Measurements

Earth and Space Science, 2019
The Earth system responds to solar variability on a wide range of timescales. Knowledge of total solar irradiance (TSI) and solar spectral irradiance (SSI) spanning minutes to centuries is needed by scientists studying a broad array of research ...
O. Coddington, J. Lean, P. Pilewskie, M. Snow, E. Richard, G. Kopp, C. Lindholm, M. DeLand, S. Marchenko, M. Haberreiter, T. Baranyi   +10 more
doaj   +1 more source

Estimation of phytoplankton concentration from downwelling irradiance measurements in water

, 2012
The downwelling irradiance spectrum is so far not used directly for the determination of water constituents, mainly due to the large and unpredictable fluctuations of the underwater light field induced by the water surface.
Gege, Peter
core   +1 more source

A new standard of spectral irradiance

Applied Optics, 1963
The National Bureau of Standards has made available a new standard of spectral irradiance in the form of a 200-W quartz-iodine lamp with a coiled-coil tungsten filament operating at about 3000°K and calibrated over the spectral range of 0.25 to 2.6 μ.
Ralph Stair, William E. Schneider, John K. Jackson   +2 more
openaire   +2 more sources