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Science 21 December 1979:
Vol. 206. no. 4425, pp. 1402 - 1404
DOI: 10.1126/science.206.4425.1402
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Articles

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

ALAN ROBOCK 1

1 Department of Meteorology, University of Maryland, College Park 20742

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.

Submitted on August 3, 1979
Revised on October 2, 1979


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