 |
| Titel |
Reconstruction of the solar spectral UV irradiance for nowcasting of the middle atmosphere state on the basis of LYRA measurements |
| VerfasserIn |
T. Egorova, E. Rozanov, J.-F. Hochedez, W. Schmutz |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 8, no. 11 ; Nr. 8, no. 11 (2008-06-12), S.2965-2973 |
| Datensatznummer |
250006185
|
| Publikation (Nr.) |
 copernicus.org/acp-8-2965-2008.pdf |
|
|
|
|
|
| Zusammenfassung |
| 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 atmosphere requires the solar irradiance for the
wide spectral range (120–680 nm) we have developed the statistical tool for
the reconstruction of the full spectrum from the LYRA measurements. The
accuracy of the reconstructed irradiance has been evaluated with 1-D
transient radiative-convective model with neutral and ion chemistry using
the daily solar spectral irradiance measured with SUSIM and SOLSTICE
instruments onboard UARS satellite. We compared the results of transient
1-year long model simulations for 2000 driven by the observed and
reconstructed solar irradiance and showed that the reconstruction of the
full spectrum using linear regression equation based on the solar irradiance
in two LYRA channels can be successfully used for nowcasting of the middle
atmosphere. We have also identified conditions when the proposed approach
does not yield spectral reconstruction with sufficient accuracy. |
| |
|
| Teil von |
|
|
|
|
|
|
|