The COronal DEnsity and Temperature (CODET) model is a physics-based model
(Rodr\’iguez-G\’omez et al. 2018; Rodr\’iguez-G\’omez 2017) . This model uses
the relationship between the magnetic field, density, temperature, and EUV
emission. This model provides mean daily Solar Spectral Irradiance time series
in EUV wavelengths in long time scales from days to solar cycles. The current
manuscript presents the updated/new CODET model version 1.1. It uses
observational datasets from SDO/EVE MEGS-A at $28.4 \ \mathrm{nm}$ E $21.1 \
\mathrm{nm}$ wavelengths to obtain the goodness-of-fit between them and the
modeled SSI from April 30, 2010, to May 26, 2014. The model described well
observational data during that period, with less than $20\%$ error in both
wavelengths. Inoltre, SSI predictions are provided using the new model
parameters from July 1996 to October 2024, where SOHO/MDI and SDO/HMI
photospheric magnetic field data are available. These predictions were compared
with GOES/EUVS at $28.4 \ \mathrm{nm}$ and mean daily values of SDO/AIA at
$21.1 \ \mathrm{nm}$ dati, with errors of $\sim 26\%$ E $42\%$ per $28.4 \
\mathrm{nm}$ E $21.1 \ \mathrm{nm}$, rispettivamente. The error analysis for
model fitting and predictions shows how accurate the model predictions are.
Thus, the CODET model provides a reliable estimate of the Solar Spectral
Irradiance time series in EUV wavelengths where no observational data is
available, per esempio., after the SDO/EVE MEGS-A era.

Questo articolo esplora i giri e le loro implicazioni.

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