Mini symposium: Global Climate of the Past Six Centuries

10 November 2023 from 14:00 to 18:00, lecture hall 001 of the Institute of Geography, Hallerstrasse 12, 3012 Bern.

Climate reconstructions have served climate science since many decades, allowing a glimpse at past states of the climate system. Long reconstructions allow scientists to study climate variability during pre-industrial conditions, long-term trends, extreme climatic events, and they allow addressing the underlying climate mechanisms. A new reconstruction now provides 600 years of monthly, global 3-dimensional climate data. The reconstruction was generated by combining an unprecedented amount of past climate observations, including proxies such as tree ring width, documentary climate information, and instrumental measurements, with a state-of-the art climate model in a so-called data assimilation approach.

This new reconstruction, termed “Modern Era Reanalysis” or ModE-RA, is the outcome of the ERC Advanced Grant PALAEO-RA awarded to Stefan Brönnimann. The new reconstruction will be presented at the occasion of a mini-symposium “Global Climate of the Past Six Centuries” together with other data sets resulting from the project and insights gained from the analysis of the reconstructions. The presentations from PALAEO-RA are supplemented with three invited talks on long instrumental temperature data sets, climate modelling, and data assimilation methods.

Programme of the mini symposium

14:00-14:10   Welcome - Martin Grosjean
14:10-14:25   Sea-surface temperature reconstruction - Eric Samakinwa
14:25-14:40   Ensemble of Model Simulations - Ralf Hand, Laura Lipfert
14:40-14:55   Climate Information from documentary sources -
                          Angela-Maria Burgdorf
14:55-15:10   Early Instrumental Data - Yuri Brugnara
15:10-15:25   Palaeo-Reanalysis - Jörg Franke

15:25-15:45   Break

15:45-16:00   Clime-App Web Interface - Richard Warren, Niklaus Bartlome
16:00-16:15   Insights from the ModE-RA data sets - Stefan Brönnimann
16:15-16:45   Extending the global instrumental surface temperature
                          record (online) - Elisabeth Kent (NOC, UK)
16:45-17:00   Climate modeling - where from, where to? -
                          Doris Folini (ETH Zurich)
17:00-17:15   Large ensemble particle filter for proxy-based spatial
                          reconstructions of the last 2000-years climate variability
                         (online) - Myriam Khodri (IPSL, France)
17:15-17:20  Closing Remarks - Stefan Brönnimann 

17:20              Apero HalleR Cafeteria

Venue and time

The mini symposium takes place at the lecture hall 001 of the Institute of Geography, Hallerstrasse 12, 3012 Bern, on 10 November 2023 from 14:00 to 18:00.

For organizational purposes, please register no later than 3 November 2023.