Precession-band variance missing from East Asian monsoon runoff.
Precession-band variance missing from East Asian monsoon runoff.
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东亚季风径流缺少进动带方差
DOI:
10.1038/s41467-018-05814-0
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发表时间:
2018-08-22
影响因子:
16.6
通讯作者:
Fox-Kemper B
中科院分区:
文献类型:
--
作者:
Clemens SC;Holbourn A;Kubota Y;Lee KE;Liu Z;Chen G;Nelson A;Fox-Kemper B
Speleothem CaCO3 δ18O is a commonly employed paleomonsoon proxy. However, inferring local rainfall amount from speleothem δ18O can be complicated due to changing source water δ18O, temperature effects, and rainout over the moisture transport path. These complications are addressed using δ18O of planktonic foraminiferal CaCO3, offshore from the Yangtze River Valley (YRV). The advantage is that the effects of global seawater δ18O and local temperature changes can be quantitatively removed, yielding a record of local seawater δ18O, a proxy that responds primarily to dilution by local precipitation and runoff. Whereas YRV speleothem δ18O is dominated by precession-band (23 ky) cyclicity, local seawater δ18O is dominated by eccentricity (100 ky) and obliquity (41 ky) cycles, with almost no precession-scale variance. These results, consistent with records outside the YRV, suggest that East Asian monsoon rainfall is more sensitive to greenhouse gas and high-latitude ice sheet forcing than to direct insolation forcing. The underlying mechanisms driving the variability of the East Asia Monsoon during the late Pleistocene remain unclear. Here, the authors present a record of local precipitation and runoff from the East Chain Sea, which indicates strong sensitivity to greenhouse gases and high latitude ice sheet forcing.
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影响因子:
16.6
作者:
Clemens SC;Holbourn A;Kubota Y;Lee KE;Liu Z;Chen G;Nelson A;Fox-Kemper B
通讯作者:
Fox-Kemper B
影响因子:
5.3
作者:
Gray, William R.;Weldeab, Syee;Fischer, Gerhard
通讯作者:
Fischer, Gerhard
影响因子:
4
作者:
Chiang, John C. H.;Fung, Inez Y.;Labrousse, Clothilde A.
通讯作者:
Labrousse, Clothilde A.
影响因子:
16.6
作者:
Caley, Thibaut;Roche, Didier M.;Renssen, Hans
通讯作者:
Renssen, Hans
影响因子:
2.8
作者:
Andres, Magdalena;Jan, Sen;Book, Jeffrey W.
通讯作者:
Book, Jeffrey W.