Centennial Total Solar Irradiance Variation
Total Solar Irradiance (TSI) quantifies the solar energy received by the Earth and therefore is of direct relevance for a possible solar influence on climate change on Earth. We analyse the TSI space measurements from 1991 to 2021, and we derive a regression model that reproduces the measured daily...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/5/1072 |
| _version_ | 1797473966671003648 |
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| author | Steven Dewitte Jan Cornelis Mustapha Meftah |
| author_facet | Steven Dewitte Jan Cornelis Mustapha Meftah |
| author_sort | Steven Dewitte |
| collection | DOAJ |
| description | Total Solar Irradiance (TSI) quantifies the solar energy received by the Earth and therefore is of direct relevance for a possible solar influence on climate change on Earth. We analyse the TSI space measurements from 1991 to 2021, and we derive a regression model that reproduces the measured daily TSI variations with a Root Mean Square Error (RMSE) of 0.17 W/m<sup>2</sup>. The daily TSI regression model uses the MgII core to wing ratio as a facular brightening proxy and the Photometric Sunspot Index (PSI) as a measure of sunspot darkening. We reconstruct the annual mean TSI backwards to 1700 based on the Sunspot Number (SN), calibrated on the space measurements with an RMSE of 0.086 W/m<sup>2</sup>. The analysis of the 11 year running mean TSI reconstruction confirms the existence of a 105 year Gleissberg cycle. The TSI level of the current grand minimum is only about 0.15 W/m<sup>2</sup> higher than the TSI level of the grand minimum in the beginning of the 18th century. |
| first_indexed | 2024-03-09T20:24:40Z |
| format | Article |
| id | doaj.art-d5101ec53ae840b29e485a28267d4c98 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T20:24:40Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-d5101ec53ae840b29e485a28267d4c982023-11-23T23:40:59ZengMDPI AGRemote Sensing2072-42922022-02-01145107210.3390/rs14051072Centennial Total Solar Irradiance VariationSteven Dewitte0Jan Cornelis1Mustapha Meftah2Royal Observatory of Belgium, Ringlaan 3, 1180 Brussels, BelgiumETRO Department, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, BelgiumLATMOS, CNRS, 78280 Guyancourt, FranceTotal Solar Irradiance (TSI) quantifies the solar energy received by the Earth and therefore is of direct relevance for a possible solar influence on climate change on Earth. We analyse the TSI space measurements from 1991 to 2021, and we derive a regression model that reproduces the measured daily TSI variations with a Root Mean Square Error (RMSE) of 0.17 W/m<sup>2</sup>. The daily TSI regression model uses the MgII core to wing ratio as a facular brightening proxy and the Photometric Sunspot Index (PSI) as a measure of sunspot darkening. We reconstruct the annual mean TSI backwards to 1700 based on the Sunspot Number (SN), calibrated on the space measurements with an RMSE of 0.086 W/m<sup>2</sup>. The analysis of the 11 year running mean TSI reconstruction confirms the existence of a 105 year Gleissberg cycle. The TSI level of the current grand minimum is only about 0.15 W/m<sup>2</sup> higher than the TSI level of the grand minimum in the beginning of the 18th century.https://www.mdpi.com/2072-4292/14/5/1072total solar irradiancesunspot number |
| spellingShingle | Steven Dewitte Jan Cornelis Mustapha Meftah Centennial Total Solar Irradiance Variation Remote Sensing total solar irradiance sunspot number |
| title | Centennial Total Solar Irradiance Variation |
| title_full | Centennial Total Solar Irradiance Variation |
| title_fullStr | Centennial Total Solar Irradiance Variation |
| title_full_unstemmed | Centennial Total Solar Irradiance Variation |
| title_short | Centennial Total Solar Irradiance Variation |
| title_sort | centennial total solar irradiance variation |
| topic | total solar irradiance sunspot number |
| url | https://www.mdpi.com/2072-4292/14/5/1072 |
| work_keys_str_mv | AT stevendewitte centennialtotalsolarirradiancevariation AT jancornelis centennialtotalsolarirradiancevariation AT mustaphameftah centennialtotalsolarirradiancevariation |