TY - JOUR
T1 - Twentieth-century warming preserved in a Geladaindong mountain ice core, central Tibetan Plateau
AU - Zhang, Yulan
AU - Kang, Shichang
AU - Grigholm, Bjorn
AU - Zhang, Yongjun
AU - Kaspari, Susan
AU - Morgenstern, Uwe
AU - Ren, Jiawen
AU - Qin, Dahe
AU - Mayewski, Paul A.
AU - Zhang, Qianggong
AU - Cong, Zhiyuan
AU - Sillanpää, Mika
AU - Schwikowski, Margit
AU - Chen, Feng
PY - 2016
Y1 - 2016
N2 - High-resolution δ18O records from a Geladaindong mountain ice core spanning the period 1477-1982 were used to investigate past temperature variations in the Yangtze River source region of the central Tibetan Plateau (TP). Annual ice-core δ18O records were positively correlated with temperature data from nearby meteorological stations, suggesting that the δ18O record represented the air temperature in the region. A generally increasing temperature trend over the past 500 years was identified, with amplified warming during the 20th century. A colder stage, spanning before the 1850s, was found to represent the Little Ice Age with colder periods occurring during the 1470s-1500s, 1580s- 1660s, 1700s-20s and 1770s-1840s. Compared with other temperature records from the TP and the Northern Hemisphere, the Geladaindong ice-core record suggested that the regional climate of the central TP experienced a stronger warming trend during the 20th century than other regions. In addition, a positive relationship between the Geladaindong δ18O values and the North Atlantic Oscillation index, combined with a wavelet analysis of δ18O records, indicated that there was a potential atmospheric teleconnection between the North Atlantic and the central TP.
AB - High-resolution δ18O records from a Geladaindong mountain ice core spanning the period 1477-1982 were used to investigate past temperature variations in the Yangtze River source region of the central Tibetan Plateau (TP). Annual ice-core δ18O records were positively correlated with temperature data from nearby meteorological stations, suggesting that the δ18O record represented the air temperature in the region. A generally increasing temperature trend over the past 500 years was identified, with amplified warming during the 20th century. A colder stage, spanning before the 1850s, was found to represent the Little Ice Age with colder periods occurring during the 1470s-1500s, 1580s- 1660s, 1700s-20s and 1770s-1840s. Compared with other temperature records from the TP and the Northern Hemisphere, the Geladaindong ice-core record suggested that the regional climate of the central TP experienced a stronger warming trend during the 20th century than other regions. In addition, a positive relationship between the Geladaindong δ18O values and the North Atlantic Oscillation index, combined with a wavelet analysis of δ18O records, indicated that there was a potential atmospheric teleconnection between the North Atlantic and the central TP.
KW - Climate change
KW - Ice chronology/dating
KW - Ice core
UR - http://www.scopus.com/inward/record.url?scp=84941658053&partnerID=8YFLogxK
U2 - 10.3189/2016AoG71A001
DO - 10.3189/2016AoG71A001
M3 - Article
AN - SCOPUS:84941658053
SN - 0260-3055
VL - 57
SP - 70
EP - 80
JO - Annals of Glaciology
JF - Annals of Glaciology
IS - 71
ER -