Reports

The "Little Ice Age": Northern Hemisphere Average Observations and Model Calculations

Science  21 Dec 1979:
Vol. 206, Issue 4425, pp. 1402-1404
DOI: 10.1126/science.206.4425.1402

Abstract

Numerical energy balance climate model calculations of the average surface temperature of the Northern Hemisphere for the past 400 years are compared with a new reconstruction of the past climate. Forcing with volcanic dust produces the best simulation, whereas expressing the solar constant as a function of the envelope of the sunspot number gives very poor results.