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Nimbus-7 sbuv (solar backscatter ultraviolet) observations of solar uv spectral irradiance variations caused by solar rotation and active-region evolution for the period november 7, 1978 - november 1, 1980
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Heath, D. F. Donnelly, R. F. Repoff, T. P. |
| Copyright Year | 1984 |
| Description | Observations of temporal variations of the solar UV spectral irradiance over several days to a few weeks in the 160-400 nm wavelength range are presented. Larger 28-day variations and a second episode of 13-day variations occurred during the second year of measurements. The thirteen day periodicity is not a harmonic of the 28-day periodicity. The 13-day periodicity dominates certain episodes of solar activity while others are dominated by 28-day periods accompanied by a week 14-day harmonic. Techniques for removing noise and long-term trends are described. Time series analysis results are presented for the Si II lines near 182 nm, the Al I continuum in the 190 nm to 205 nm range, the Mg I continuum in the 210 nm to 250 nm range, the MgII H & K lines at 280 nm, the Mg I line at 285 nm, and the Ca II K & H lines at 393 and 397 nm. |
| File Size | 4104738 |
| Page Count | 79 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850014024 |
| Archival Resource Key | ark:/13960/t3sv2f11f |
| Language | English |
| Publisher Date | 1984-09-01 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Solar Activity Solar Rotation Harmonic Radiation Time Series Analysis Backscattering Ultraviolet Spectra Nimbus 7 Satellite Irradiance Line Spectra Solar Radiation Periodic Variations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
