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Delayed Climate Change in Ny-?lesund,Svalbard,a Representative Location in the Arctic

Shujie WANG  Minghu DING  Weijun SUN  Lingen BIAN  Changgui LU  Cunde XIAO  Ting WEI  Dongqi ZHANG  Tong ZHANG  Yetang WANG  
【摘要】:In recent decades, global warming has attracted considerable attention, and the Earth has experienced a warming slowdown/hiatus since 1998. However, the Arctic warming rate is approximately twice the global rate and has not slowed since the 1990 s. The cause of this discrepancy has been debated for almost ten years. In this study, we evaluated the climate changes in Ny-? lesund, Svalbard, a representative location in the Arctic, based on observational records from 1975-2014. We found that the warming rate was four times higher than the global mean(+0.76°C decade~(-1)) buthas been slowing since 2006. Furthermore, the climate variations in Ny-? lesund exhibit a significant but lagged correlation with global Had CRUT4 datasets. This finding indicates that the Arctic is likely experiencing a pattern similar to the global pattern but delayed by 8-9 years due to the effect of heat storage in the Arctic, among other possible factors. Other atmospheric parameters, including specific humidity, wind and air pressure, are also evaluated in this paper.

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