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Calendar effect on phase study in paleoclimate transient simulation with orbital forcing
Chen, GS (Chen, Guang-Shan)[1,2]; Kutzbach, JE (Kutzbach, J. E.)[2]; Gallimore, R (Gallimore, R.)[2]; Liu, ZY (Liu, Zhengyu)[2]
2011-11-30
发表期刊CLIMATE DYNAMICS
卷号37期号:9-10页码:1949-1960
文章类型期刊论文
摘要

Several studies have shown that the use of different calendars in paleoclimate simulations can cause artificial phase shifts on insolation forcing and climatic responses. However, these important calendar corrections are still often neglected. In this paper, the phase shifts at the precession band is quantitatively assessed by converting the model data of the transient GCM climate simulation of Kutzbach et al. (Clim Dyn 30:567-579, 2008) from the "fixed-day" calendar to the "fixed-angular" calendar with a new and efficient approach. We find that insolation has a big phase shift in September-October-November (SON) when the vernal equinox (VE) is fixed to March 21. At high latitude, the phase bias is up to 60A degrees (about 3650 years). The insolation phase bias in SON in Southern Hemisphere (SH) is especially important because it can influence the timing of the SH summer monsoon response due to the large heat capacity of ocean. The calendar correction has minor effect (+/- 2A degrees) on the phase relationships between forcing and precipitation responses of the six global summer monsoons studied in Kutzbach et al. (2008). After correcting the calendar effect, especial on SH ocean temperature, the new phase wheel results are more similar for both hemispheres. The results suggest that the calendar effect should be corrected before discussing the dynamics between orbital forcing and climatic responses in phase studies of transient simulations.

关键词Calendar Effect Phase Study Orbital Forcing Transient Simulation
DOI10.1007/s00382-010-0944-6
收录类别SCI
语种英语
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被引频次:33[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10237
专题古环境研究室
通讯作者Chen, GS (Chen, Guang-Shan)[1,2]
作者单位1.SKLLQG, Institute of Earth Environment,Chinese Academy of Sciences, Xi’an, China;
2.Center for Climate Research, University of Wisconsin,Madison, WI, USA
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GB/T 7714
Chen, GS ,Kutzbach, JE ,Gallimore, R ,et al. Calendar effect on phase study in paleoclimate transient simulation with orbital forcing[J]. CLIMATE DYNAMICS,2011,37(9-10):1949-1960.
APA Chen, GS ,Kutzbach, JE ,Gallimore, R ,&Liu, ZY .(2011).Calendar effect on phase study in paleoclimate transient simulation with orbital forcing.CLIMATE DYNAMICS,37(9-10),1949-1960.
MLA Chen, GS ,et al."Calendar effect on phase study in paleoclimate transient simulation with orbital forcing".CLIMATE DYNAMICS 37.9-10(2011):1949-1960.
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