 |
Journal articles
Monitoring the solar UV irradiance spectrum from the observation of a few passbands
Abstract : The solar irradiance in the UV is a key ingredient in space weather applications; however, because of the lack of continuous and long-term observations, various indices are still used today as surrogates for the solar spectral irradiance. Aims. As an alternative to current spectrometers we use a few radiometers with properly chosen passbands and reconstruct the solar spectral irradiance from their outputs. The feasibility of such a reconstruction is justified by the high redundancy in the spectral variability. Methods. Using a multivariate statistical approach, we first compared six years of daily-averaged UV spectra and a selection of passbands (from existing radiometers) and solar indices. This leads to a strategy for defining those passbands that are most appropriate for reconstructing the spectrum. Results. With four passdbands chosen from already existing instruments, we reconstruct the UV spectrum with a relative error of about 20%. Better performance is achieved with a combination of passbands than with a combination of indices.
Cited literature [27 references]
https://hal.archives-ouvertes.fr/hal-00592261
Contributor : Catherine Cardon <>
Submitted on : Monday, January 11, 2016 - 10:12:16 AM
Last modification on : Saturday, December 12, 2020 - 12:10:03 PM
Long-term archiving on: : Tuesday, April 12, 2016 - 11:08:05 AM
Contributor : Catherine Cardon <>
Submitted on : Monday, January 11, 2016 - 10:12:16 AM
Last modification on : Saturday, December 12, 2020 - 12:10:03 PM
Long-term archiving on: : Tuesday, April 12, 2016 - 11:08:05 AM
File
aa15903-10.pdf
Publisher files allowed on an open archive
Licence
Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License