ROSES ID: NNH06ZDA001N Selection Year: 2007
Program Element: Focused Science Topic
Principal Investigator: John Fontenla
Affiliation(s): University of Colorado
Project Member(s):
Gonzalez Hernandez, Irene Collaborator National Solar Observatory
Lindsey, Charles Allan Collaborator NorthWest Research Associates, Inc.
Summary:
We propose new research into the physical origins of the UV solar spectral irradiance variations and their contribution to the total. This research will expand tools we have developed to relate the visible and infrared solar spectral irradiance variations to features observed on the solar disk, namely active regions and network, through semi-empirical atmospheric models constructed to explain their spectra. Our approach is based on the physical processes of non-Local Thermodynamic Equilibrium (NLTE) radiative transfer and observational diagnostics of physical parameters characterizing the solar atmosphere. This approach uses high-quality solar images at key wavelengths together with our published semi-empirical models, and has been very successful in reproducing observed spectral irradiance variations for lambda>400 nm during the last few years.Performance Year | Reference | Investigation Type | Actions |
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1 | Fontenla, J., Balasubramaniam, K.S., & Harder, J. 2007, "Sem... | not set | |
1 | Fontenla, J., Curdt, W., Avrett, E.H., & Harder, J. 2007, "... | not set | |
1 | Fontenla, J.M., Peterson, W.K., & Harder, J. 2008, "Chromos... | not set | |
1 | Platnick, S. & Fontenla, J.M. 2008, "Model Calculations of ... | not set | |
1 | Fontenla, J. M.; Curdt, W.; Haberreiter, M.; Harder,Â... | not set |
Performance Year | Reference | Actions |
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1 | Fontenla, Juan; Haberreiter, Margit; Quemerais, E.; (20... | |
1 | Haberreiter, M.; Fontenla, J.; Gonzalez-Hernandez, I.;Â... | |
1 | Fontenla, Juan; Haberreiter, M.; Harder, J.; (2009), To... | |
1 | Peterson, W. K.; Woods, T. N.; Fontenla, J. M.; Ric... | |
1 | Peterson, W. K.; Woods, T. N.; Fontenla, J. M.; Ric... |