There have been many reviews and articles published that reached the conclusion that much of the global warming since the mid-20th century and earlier could be explained in terms of solar variability.
For example:
Soon et al. (1996); Hoyt & Schatten (1997); Svensmark & Friis-Christensen (1997); Soon et al. (2000b,a); Bond et al. (2001); Willson & Mordvinov (2003); Maasch et al. (2005); Soon (2005); Scafetta & West (2006a,b); Scafetta & West (2008a,b); Svensmark (2007); Courtillot et al. (2007, 2008); Singer & Avery (2008); Shaviv (2008); Scafetta (2009, 2011); Le Mouel et al. ¨ (2008, 2010); Kossobokov et al. (2010); Le Mouel et al. ¨ (2011); Humlum et al. (2011); Ziskin & Shaviv (2012); Solheim et al. (2012); Courtillot et al. (2013); Solheim (2013); Scafetta & Willson (2014); Harde (2014); Luning & Vahrenholt ¨ (2015, 2016); Soon et al. (2015); Svensmark et al. (2016, 2017); Harde (2017); Scafetta et al. (2019); Le Mouel¨ et al. (2019a, 2020a); Morner et al. ¨ (2020); Ludecke et al. ¨ (2020)).
Other reviews and articles over this period have either been undecided, or else argued for significant but subtle effects of solar variability on climate change.
For example:
Labitzke & van Loon (1988); van Loon & Labitzke (2000); Labitzke (2005); Beer et al. (2000); Reid (2000); Carslaw et al. (2002); Ruzmaikin & Feynman (2002); Ruzmaikin et al. (2004, 2006); Feynman & Ruzmaikin (2011); Ruzmaikin & Feynman (2015); Salby & Callaghan (2000, 2004, 2006); Kirkby (2007); de Jager et al. (2010); Tinsley & Heelis(1993); Tinsley (2012); Lam & Tinsley (2016); Zhou et al. (2016); Zhang et al. (2020b); Dobrica et al. (2009); Dobrica et al. (2010); Demetrescu & Dobrica (2014); Dobrica et al. (2018); Blanter et al. (2012); van Loon & Shea (1999); van Loon & Meehl (2011); van Loon et al. (2012); Roy & Haigh (2012); Roy (2014, 2018); Roy & Kripalani (2019); Lopes et al. (2017); Pan et al. (2020).