TY - JOUR
T1 - Deciphering local and regional hydroclimate resolves contradicting evidence on the Asian monsoon evolution
AU - Wolf, Annabel
AU - Ersek, Vasile
AU - Braun, Tobias
AU - French, Amanda D.
AU - McGee, David
AU - Bernasconi, Stefano M.
AU - Skiba, Vanessa
AU - Griffiths, Michael L.
AU - Johnson, Kathleen R.
AU - Fohlmeister, Jens
AU - Breitenbach, Sebastian F. M.
AU - Pausata, Francesco S.R.
AU - Tabor, Clay R.
AU - Longman, Jack
AU - Roberts, William H. G.
AU - Chandan, Deepak
AU - Peltier, W. Richard
AU - Salzmann, Ulrich
AU - Limbert, Deborah
AU - Trinh, Hong Quan
AU - Trinh, Anh Duc
N1 - Funding information: Vietnam Foundation for Science and Technology Development RCUK-NAFOSTED (grant numbers NE/P014577/1) to A.D.T., NSF grants AGS 1804747 to C.R.T., NSF grant AGS-2103129 to K.R.J. and AGS-2103051 to M.L.G., Northumbria Ph.D. studentship to A.W. V.S. and J.F. acknowledge funding by Deutsche Forschungsgemeinschaft (grant FO 809/6-1). The EC-Earth model simulations were enabled by resources provided by the Swedish NationalInfrastructure for Computing (SNIC) at the National Supercomputer Centre (NSC) and Cray XC30 HPC systems at ECMWF. The research of WRP at the University of Toronto is supported by NSERC Discovery Grant A9627.
PY - 2023/9/14
Y1 - 2023/9/14
N2 - The winter and summer monsoons in Southeast Asia are important but highly variable sources of rainfall. Current understanding of the winter monsoon is limited by conflicting proxy observations, resulting from the decoupling of regional atmospheric circulation patterns and local rainfall dynamics. These signals are difficult to decipher in paleoclimate reconstructions. Here, we present a winter monsoon speleothem record from Southeast Asia covering the Holocene and find that winter and summer rainfall changed synchronously, forced by changes in the Pacific and Indian Oceans. In contrast, regional atmospheric circulation shows an inverse relation between winter and summer controlled by seasonal insolation over the Northern Hemisphere. We show that disentangling the local and regional signal in paleoclimate reconstructions is crucial in understanding and projecting winter and summer monsoon variability in Southeast Asia.
AB - The winter and summer monsoons in Southeast Asia are important but highly variable sources of rainfall. Current understanding of the winter monsoon is limited by conflicting proxy observations, resulting from the decoupling of regional atmospheric circulation patterns and local rainfall dynamics. These signals are difficult to decipher in paleoclimate reconstructions. Here, we present a winter monsoon speleothem record from Southeast Asia covering the Holocene and find that winter and summer rainfall changed synchronously, forced by changes in the Pacific and Indian Oceans. In contrast, regional atmospheric circulation shows an inverse relation between winter and summer controlled by seasonal insolation over the Northern Hemisphere. We show that disentangling the local and regional signal in paleoclimate reconstructions is crucial in understanding and projecting winter and summer monsoon variability in Southeast Asia.
UR - https://www.scopus.com/pages/publications/85171372138
U2 - 10.1038/s41467-023-41373-9
DO - 10.1038/s41467-023-41373-9
M3 - Article
SN - 2041-1723
VL - 14
SP - 1
EP - 14
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 5697
ER -