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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999

FROM VOLUME 6, NUMBER 5, MAY 1993

PROFESSIONAL PUBLICATIONS...
SUN-CLIMATE RELATIONSHIPS

Item #d93may11

"A 2000-Year Tree Ring Record of Annual Temperatures in the Sierra Nevada Mountains," L.A. Scuderi (Dept. Geog., Boston Univ., Boston MA 02215), 1433-1436, Mar. 5, 1993.

The temperature reconstruction indicates a 125-year periodicity that may be linked to solar activity, as reflected in radiocarbon and auroral records. Both the Little Ice Age and the Medieval Warm Epoch are clearly associated with the periodicity. Phase changes occur at the onset and termination of the most recent radiocarbon triplet, and may indicate chaotic solar behavior.

Item #d93may12

"Solar Output and Global Warming," N.S. Cooper (104 Westhall Rd., Warlingham, Surrey CR6 9HD, UK), Nature, 361(6413), 598, Feb. 18, 1993. Letter suggesting that tropical data on the semidiurnal atmospheric tide would provide a good test of the recent proposal that global mean temperature depends on sunspot cycle length.

Item #d93may13

"Solar Irradiance Variations and Global Ocean Temperatures," G.C. Reid (ERL, NOAA, 325 Broadway, Boulder CO 80303), J. Geomag. & Geoelec., 43(S), 795-801, 1991.

The observed similarity between the envelope of the 11-year solar activity cycle and a time series of globally averaged sea surface temperatures over the past 130 years was explored using a 1-D model of the thermal response of the global ocean to variations in surface heating. Deduces that total irradiance at the time of the Maunder Minimum was about 1% less than the present value.