NESSC symposium on Climate Sensitivity

We are pleased to invite you to the upcoming NESSC symposium: “Equilibrium Climate Sensitivity: Past, Present and Future – Knowledge gaps in IPCC” organized in Utrecht on Monday the 9th of July 2018.

About the symposium
The day will start with registration and coffee & tea between 10.00h and 10.30h. At the end of the day there will be an open discussion to discuss knowledge gaps in the IPCC reports, followed by social drinks (17.00h).

Preliminary list of speakers: Heather Stoll, Clara Bolton, Stefano Bernasconi, Alan Haywood, Dan Lunt, Yannick Donnadieu and Qiong Zhang.

The symposium is part of a meeting of international experts on climate sensitivity, who are preparing a EU proposal on this topic. The symposium is funded through the NESSC workshop program and is therefore free of charge, including lunch and drinks.

Please register per e-mail (before July 2) to If you are registering any colleagues please include their names and email too. Let us know if you have any dietary requirements.


Equilibrium Climate Sensitivity: Past, Present and Future (ECS4PPF)

Monday 9 July 2018 – Utrecht University

Venue: Koningsbergergebouw – Budapestlaan 4a-b
Lecture room: ATLAS


10.00 – 10.30         Registration & coffee/tea

10.30 – 10.45         Lucas Lourens LC-CLA-08-2018: Addressing knowledge gaps in climate science, in support of IPCC reports


Session 1:  Overview of climate records from past warm periods

10.45 – 11.00         Carolien van der Weijst Mid-Pliocene Warm Period

11.00 – 11.15         Caitlyn Witkowski pCO2 reconstructions of the Miocene using stable isotopic composition of algal biomarkers

11.15 – 11.30         Diederik Liebrand Climate, cryosphere and carbon cycle evolution during the Oligocene and Miocene

11.30 – 11.45         Margot Cramwinckel Eocene Climate Transition

11:45 – 12:00         Luigi Dallai isotopic signatures from Antarctic cores for Eocene and post-Eocene

12:00 – 12:15         Cindy Schrader Changes in ocean circulation and (export) productivity during the Early Eocene Climatic Optimum

12:15 – 12:30         Joost Frieling Paleocene-Eocene Thermal Maximum: unresolved questions

12.30 – 13.30         Lunch break


Session 2: Climate Modeling of past warm periods

13:30 – 13:50         Alan Haywood Achievements and Current Plans of the Pliocene Model Intercomparison Project

13.50 – 14.10         Dan Lunt Overview of DeepMIP modelling and associated projects

14.10 – 14.30         Sybren Drijfhout Performing Paleoclimate studies with EC-Earth at default (CMIP) resolution

14.30 – 14.50         Michiel Baatsen CESM simulation of the middle-to-late Eocene

14.50 – 15.10         Tea/Coffee break


Session 3:    Improving past climate reconstructions

15.10 – 15.30         Stefano Bernasconi Reconstruction paleotemperatures from clumped isotope analysis of the fine fraction of marine sediments

15.30 – 15.50         Martin Ziegler How close are we to getting accurate temperature estimates from (marine-based) proxies? And what do we need to do to get closer?

15.50 – 16.20          Clara Bolton & Heather Stoll How close are we to getting accurate CO2 estimates from (marine-based) proxies? And what do we need to do to get closer?


Session 4:    Equilibrium Climate Sensitivity & discussion

16.20 – 16.40         Anne von der Heydt Past Earth Network

16.40 – 17.00         Open discussion Addressing knowledge gaps in climate science, in support of IPCC reports

17.00 – 18.00         drinks