Agreement between reconstructed and modeled boreal precipitation of the Last Interglacial

The last extended time period when climate may have been warmer than today was during the Last Interglacial (LIG; ca. 129 to 120 thousand years ago). However, a global view of LIG precipitation is lacking. Here, seven new LIG climate models are compared to the first global database of proxies for LIG precipitation. In this way, models are assessed in their ability to capture important hydroclimatic processes during a different climate. The models can reproduce the proxy-based positive precipitation anomalies from the preindustrial period over much of the boreal continents. Over the Southern Hemisphere, proxy-model agreement is partial. In models, LIG boreal monsoons have 42% wider area than in the preindustrial and produce 55% more precipitation and 50% more extreme precipitation. Austral monsoons are weaker. The mechanisms behind these changes are consistent with stronger summer radiative forcing over boreal high latitudes and with the associated higher temperatures during the LIG.

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Copyright 2019 Author(s). This work is licensed under a Creative Commons Attribution 4.0 International license.


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Author Scussolini, Paolo
Bakker, Pepijn
Guo, Chuncheng
Stepanek, Christian
Zhang, Qiong
Braconnot, Pascale
Cao, Jian
Guarino, Maria-Vittoria
Coumou, Dim
Prange, Matthias
Ward, Philip J.
Renssen, Hans
Kageyama, Masa
Otto-Bliesner, Bette
Aerts, Jeroen C. J. H.
Publisher UCAR/NCAR - Library
Publication Date 2019-11-20T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Resource Version N/A
Topic Category geoscientificInformation
Progress N/A
Metadata Date 2023-08-18T19:08:11.908399
Metadata Record Identifier edu.ucar.opensky::articles:23012
Metadata Language eng; USA
Suggested Citation Scussolini, Paolo, Bakker, Pepijn, Guo, Chuncheng, Stepanek, Christian, Zhang, Qiong, Braconnot, Pascale, Cao, Jian, Guarino, Maria-Vittoria, Coumou, Dim, Prange, Matthias, Ward, Philip J., Renssen, Hans, Kageyama, Masa, Otto-Bliesner, Bette, Aerts, Jeroen C. J. H.. (2019). Agreement between reconstructed and modeled boreal precipitation of the Last Interglacial. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7ff3wjq. Accessed 15 February 2025.

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