Ice-core sulfate from three northern hemisphere sites: Source and temperature forcing implications

Atmospheric Environment. Part A. General Topics Pub Date : 1993-12-01 DOI:10.1016/0960-1686(93)90323-Q

Paul A Mayewski , Gerald Holdsworth , Mary Jo Spencer , Sallie Whitlow , Mark Twickler , Michael C Morrison , Kevin K Ferland , Loren D Meeker

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引用次数: 48

Abstract

Comparison of ice-core nss sulfate records (two sites in Greenland and one in the North Pacific) with temperature change records for the regions including these core sites provides further confirmation that change in the concentration of anthropogenic sulfate has had a significant effect on regional temperature during at least the period ∼ad1940–1970 over at least the Atlantic portion of the Arctic. Using the ad1880–1985 portion of our ice-core records as an analog, we provide a test of the potential temperature depression caused by non-seasalt (nss) sulfate aerosols over Greenland during the period ∼ad700–1900 concluding that the anthropogenic era is unique by comparison. Statistical examination of this record allows a determination of the relative contributions of volcanic vs biogenic source nss sulfate during this period plus a characterization of the variability in these two sources.

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北半球三个地点的冰芯硫酸盐:来源和温度强迫意义

冰芯nss硫酸盐记录(格陵兰岛的两个站点和北太平洋的一个站点)与包括这些核心站点在内的地区的温度变化记录的比较进一步证实，至少在1940 - 1970年期间，至少在北极的大西洋部分，人为硫酸盐浓度的变化对区域温度产生了显著影响。利用我们的冰芯记录的ad1880-1985部分作为类比，我们对格陵兰岛在ad700-1900期间由非海盐(nss)硫酸盐气溶胶引起的潜在温度下降进行了测试，得出结论，相比之下，人为时代是独特的。通过对这一记录进行统计检查，可以确定这一时期火山源与生物源硫酸氮的相对贡献，并对这两种来源的变异性进行表征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Atmospheric Environment. Part A. General Topics

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