Image Details

Choose export citation format:

DIMMING OF THE MID-20TH CENTURY SUN

  • Authors: Peter Foukal

2015 The Astrophysical Journal 815 9.

  • Provider: AAS Journals

Caption: Figure 2.

(a) The annual mean Af (solid) and Apn for sunspot cycles 15–20. Af has been multiplied by 20. The arrows show the trends of peak Apn and Af. Panel (b) shows the observed (dashed) and calculated (solid) Apn from relation (1).

Other Images in This Article
Copyright and Terms & Conditions