The warm Pliocene: Bridging the geological data and modeling communities

PlioMioVAR workshop, Leeds, UK, and online, 24–26 August 2022

(1) From PlioVAR to PlioMioVAR

As our initial phase of the PlioVAR database is nearing completion (McClymont et al. 2020), built as part of the former PAGES PlioVAR WG, our ongoing aim is to expand the dataset spatially and temporally. The first phase of PlioVAR focused on marine records due to the specific age-model constraints for data-model comparisons. Consequently, terrestrial archives of vegetation and precipitation were excluded from the initial work. Workshop participants identified updating the terrestrial records as a strategic aim of the next PlioMioVAR objectives. The Miocene arm of the working group met in January 2023, and has a series of planned hackathons before a hybrid meeting in June 2023 (pastglobalchanges.org/calendar/129302) to work on organizing paleoceanographic records.

(2) From PlioMIP2 to PlioMIP3

The second phase of the Pliocene Model Intercomparison Project (PlioMIP2) is reaching its conclusion, with meeting participants presenting various paleoclimate modeling studies covering topics such as the quantification of Earth’s Climate Sensitivity, patterns of atmospheric and oceanic circulation, polar amplification, climate extremes and assessments of model performance vis-à-vis marine and terrestrial proxy data (Fig. 1). In addition, draft science plans for PlioMIP3 were presented, discussed, and endorsed by participants both from the modeling and data communities. Future modeling directions discussed include the expansion of the temporal remit of PlioMIP into the Early Pliocene, enabling a comparison between Late and Early Pliocene climate states, and building one half of a scientific bridge that will eventually facilitate research collaboration between the PlioMIP and MioMIP projects.

Figure 1: Figure from McClymont et al. (2020) showing the site locations used in the PlioVAR synthesis. Sea-surface temperature proxies are indicated with different symbols and the background temperature is from World Ocean Atlas 2018 (Locarnini et al. 2018).

(3) Fostering a vibrant community

We purposefully ran our workshop in hybrid mode to include as many people as possible. Although many parts of society are opening up for in-person activities, many of our colleagues do not feel comfortable traveling for medical reasons, or simply wish to travel less due to caring responsibilities, and to reduce carbon footprints. We saw providing a high-quality hybrid option as an equity issue. To enable our hybrid participation, we had a dedicated virtual poster session with individual Zoom rooms for synchronous participation. Each poster had a virtual wall on Padlet (padlet.com) for asynchronous participation and follow up comments. Each Padlet wall included the abstract and poster, and presenters were encouraged to include a brief video explaining their main points, any relevant manuscripts/preprints and/or any other information. Discussion groups were facilitated in-person or on Zoom (not mixed), while for the final reporting, both virtual and in-person groups came together. Talks were a mix of virtual and in-person, and recorded for storage online for three months post workshop. We also ran a session dedicated to discussing Equality, Diversity, and Inclusion that was facilitated by Prof. Mea Cook (Williams College, USA) and an early-career researcher event.

Acknowledgements

Funds from the European Geoscience Union Galileo Conference and UK-IOPD additionally supported this workshop.

affiliations

contact

Heather Ford: h.ford@qmul.ac.uk

REFERENCES

Locarnini et al. (2018). World Ocean Atlas 2018, Volume 1: Temperature. NOAA Atlas NESDIS 81, 52pp

McClymont E et al. (2020) Clim Past 16: 1599-1615