文献类型：期刊文献

英文题名：Cooling trend over the past 4 centuries in northeastern Hong Kong waters as revealed by alkenone-derived SST records

作者：Kong, Deming[1,2];Tse, Yuen-Yeung[1];Jia, Guodong[3];Wei, Gangjian[3];Chen, Min-Te[4];Zong, Yongqiang[1];Liu, Zhonghui[1]

机构：[1]Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China;[2]Guangdong Ocean Univ, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang 524088, Peoples R China;[3]Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Marginal Sea Geol, Guangzhou 510640, Guangdong, Peoples R China;[4]Natl Taiwan Ocean Univ, Inst Appl Geosci, Keelung 20224, Taiwan

年份：2015

卷号：114

起止页码：497

外文期刊名：JOURNAL OF ASIAN EARTH SCIENCES

收录：SCI-EXPANDED(收录号：WOS:000367857800007)、、Scopus(收录号：2-s2.0-84947863601)、WOS

基金：This work was partially supported by the National Basic Research Program of China (2010CB428902), the NSFC/RGC Joint Research Scheme (N_HKU 736/10) and RGC GRF (HKU 707612P). HKU research facility was supported by the Special Equipment Grant from the University Grants Committee of the Hong Kong Special Administrative Region, China (SEG HKU01).

语种：英文

外文关键词：Mirs Bay; Upwelling; Alkenone; Summer monsoon; Global warming

外文摘要：The climate history over the past few centuries is important to be used to assess how regional climate responds to global forcing. Here we report three high-resolution alkenone-based sea surface temperature (SST) records over the past 4 centuries from three sediment cores collected in the Mirs Bay, northeastern Hong Kong. All three SST records consistently show a general cooling trend toward the present, with most of cooling occurring over the last century. Alkenone-derived SST values stayed around 26.5-27 degrees C at the three sites prior to 1900s and decreased into the range of 25-26 degrees C. The magnitude of cooling approximately from the Little Ice Age (LIA) to present tends to be dampened from similar to 2 degrees C nearshore to similar to 1 degrees C offshore. The cooling trend, as identified in all three SST records, is thus opposite to the global temperature rise over the last century. Assisted with modern observations, we interpret that the alkenone-derived SST reflects increasing upwelling in the Mirs Bay, which likely results from the strengthened East Asian summer monsoon, in the context of global warming over the last century. (c) 2015 Elsevier Ltd. All rights reserved.