TY - JOUR
T1 - Time-varying relationships among oceanic and atmospheric modes
T2 - A turning point at around 1940
AU - Fang, Keyan
AU - Chen, Deliang
AU - Ilvonen, Liisa
AU - Frank, David
AU - Pasanen, Leena
AU - Holmström, Lasse
AU - Zhao, Yan
AU - Zhang, Peng
AU - Seppä, Heikki
N1 - Funding Information:
This research was funded by the National Science Foundation of China ( 41471172 and U1405231 ), the Fellowship for Distinguished Young Scholars of Fujian Province ( 2015J06008 ), the Minjiang Special-term Professor fellowship as well as the Swedish BECC, MERGE, VR grants and EBOR project .
Publisher Copyright:
© 2017 Elsevier Ltd and INQUA
PY - 2018/9/10
Y1 - 2018/9/10
N2 - Oceanic and atmospheric modes play a key role in modulating climate variations, particularly on interannual and interdecadal scales, causing an indirect response of regional climate to external forcings. This study comprehensively investigated the time-varying linkages among dominant oceanic and atmospheric modes of the Pacific and Atlantic areas on different timescales using the scale space multiresolution correlation analysis. For the Pacific Ocean, the Interdecadal Pacific Oscillation (IPO) shows closer matches with the El Niño-Southern Oscillation (ENSO) than with the Pacific Decadal Oscillation (PDO). This indicates that the ENSO dominates climate variability of the whole Pacific Ocean not only on interannual but also on interdecadal scales. Interdecadal variations of the IPO appear to be more closely linked to southern Pacific Ocean climate before ∼1940, but become more closely linked to northern Pacific Ocean after ∼1940. The shifts on interdecadal connections among northern, tropical and southern parts of the Pacific Oceans seems to be related to the phase shifts of the IPO/PDO, which may contribute to the cooling trend from 1940s to 1970s. For the Atlantic Ocean, the Atlantic Multi-decadal Oscillation (AMO) is closely linked to the North Atlantic Oscillation (NAO) on the interdecadal scale before ∼1940.
AB - Oceanic and atmospheric modes play a key role in modulating climate variations, particularly on interannual and interdecadal scales, causing an indirect response of regional climate to external forcings. This study comprehensively investigated the time-varying linkages among dominant oceanic and atmospheric modes of the Pacific and Atlantic areas on different timescales using the scale space multiresolution correlation analysis. For the Pacific Ocean, the Interdecadal Pacific Oscillation (IPO) shows closer matches with the El Niño-Southern Oscillation (ENSO) than with the Pacific Decadal Oscillation (PDO). This indicates that the ENSO dominates climate variability of the whole Pacific Ocean not only on interannual but also on interdecadal scales. Interdecadal variations of the IPO appear to be more closely linked to southern Pacific Ocean climate before ∼1940, but become more closely linked to northern Pacific Ocean after ∼1940. The shifts on interdecadal connections among northern, tropical and southern parts of the Pacific Oceans seems to be related to the phase shifts of the IPO/PDO, which may contribute to the cooling trend from 1940s to 1970s. For the Atlantic Ocean, the Atlantic Multi-decadal Oscillation (AMO) is closely linked to the North Atlantic Oscillation (NAO) on the interdecadal scale before ∼1940.
KW - AMO
KW - Climate teleconnection
KW - ENSO
KW - IPO
KW - NAO
KW - Scale space multiresolution analysis
UR - http://www.scopus.com/inward/record.url?scp=85029755283&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029755283&partnerID=8YFLogxK
U2 - 10.1016/j.quaint.2017.09.005
DO - 10.1016/j.quaint.2017.09.005
M3 - Article
AN - SCOPUS:85029755283
VL - 487
SP - 12
EP - 25
JO - Quaternary International
JF - Quaternary International
SN - 1040-6182
ER -