Long-term changes in UV and EUV solar radiation
Total solar irradiance (TSI) may present the same long-term variation as the solar cycle length (SCL), corresponding to the Gleissberg cycle. It is expected that when SCL decrease, TSI increase. The analysis of stratospheric, ionospheric and solar data suggest that UV and EUV solar radiation have lo...
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| Format: | Article |
| Language: | English |
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Universidad Nacional Autónoma de México, Instituto de Geofísica
2000-04-01
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| Series: | Geofísica Internacional |
| Subjects: | |
| Online Access: | http://www.geofisica.unam.mx/unid_apoyo/editorial/publicaciones/investigacion/geofisica_internacional/anteriores/2000/01/adler.pdf |
| _version_ | 1797717598648926208 |
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| author | T. Heredia A. G. Elias N. O. de Adler |
| author_facet | T. Heredia A. G. Elias N. O. de Adler |
| author_sort | T. Heredia |
| collection | DOAJ |
| description | Total solar irradiance (TSI) may present the same long-term variation as the solar cycle length (SCL), corresponding to the Gleissberg cycle. It is expected that when SCL decrease, TSI increase. The analysis of stratospheric, ionospheric and solar data suggest that UV and EUV solar radiation have long-term variations that do not depend on the sunspot number Rz. The part of the UV and EUV solar flux associated to SCL, called UV(SCL) y EUV(SCL), varies in such a way that when SCL decreases, this radiation decreases. Direct indices of EUV and UV available data support this hypothesis. Through ionospheric data we estimated that EUV (SCL) is 1% and 2% of the total EUV solar flux, for a short and a long solar cycle respectively. |
| first_indexed | 2024-03-12T08:38:40Z |
| format | Article |
| id | doaj.art-5585b00c458a46c4ba8022db9f5aff61 |
| institution | Directory Open Access Journal |
| issn | 0016-7169 |
| language | English |
| last_indexed | 2024-03-12T08:38:40Z |
| publishDate | 2000-04-01 |
| publisher | Universidad Nacional Autónoma de México, Instituto de Geofísica |
| record_format | Article |
| series | Geofísica Internacional |
| spelling | doaj.art-5585b00c458a46c4ba8022db9f5aff612023-09-02T17:03:16ZengUniversidad Nacional Autónoma de México, Instituto de GeofísicaGeofísica Internacional0016-71692000-04-013919395Long-term changes in UV and EUV solar radiationT. HerediaA. G. EliasN. O. de AdlerTotal solar irradiance (TSI) may present the same long-term variation as the solar cycle length (SCL), corresponding to the Gleissberg cycle. It is expected that when SCL decrease, TSI increase. The analysis of stratospheric, ionospheric and solar data suggest that UV and EUV solar radiation have long-term variations that do not depend on the sunspot number Rz. The part of the UV and EUV solar flux associated to SCL, called UV(SCL) y EUV(SCL), varies in such a way that when SCL decreases, this radiation decreases. Direct indices of EUV and UV available data support this hypothesis. Through ionospheric data we estimated that EUV (SCL) is 1% and 2% of the total EUV solar flux, for a short and a long solar cycle respectively.http://www.geofisica.unam.mx/unid_apoyo/editorial/publicaciones/investigacion/geofisica_internacional/anteriores/2000/01/adler.pdfSun-Earth relationshipssolar activityionosphere |
| spellingShingle | T. Heredia A. G. Elias N. O. de Adler Long-term changes in UV and EUV solar radiation Geofísica Internacional Sun-Earth relationships solar activity ionosphere |
| title | Long-term changes in UV and EUV solar radiation |
| title_full | Long-term changes in UV and EUV solar radiation |
| title_fullStr | Long-term changes in UV and EUV solar radiation |
| title_full_unstemmed | Long-term changes in UV and EUV solar radiation |
| title_short | Long-term changes in UV and EUV solar radiation |
| title_sort | long term changes in uv and euv solar radiation |
| topic | Sun-Earth relationships solar activity ionosphere |
| url | http://www.geofisica.unam.mx/unid_apoyo/editorial/publicaciones/investigacion/geofisica_internacional/anteriores/2000/01/adler.pdf |
| work_keys_str_mv | AT theredia longtermchangesinuvandeuvsolarradiation AT agelias longtermchangesinuvandeuvsolarradiation AT nodeadler longtermchangesinuvandeuvsolarradiation |