The ca. 4.2 - 3.9 ka BP abrupt aridification and cooling event is  recorded globally, in many cases at high-resolution, but its causes,  precise timing, qualities and quantification remain enigmatic. 

A 3-day "4.2 ka BP event international workshop" will be held at the Dipartimento di Scienze della Terra (Università di Pisa), January  10-12,  2018, Pisa, Italy to present and discuss:

1. New high-resolution data for the quantification of the event, its dating, abruptness, magnitude and duration;
2. New syntheses of the event's regional climatic manifestations;
3. Spatio-temporal explanations and modelling of the event.

Approximately 50 participants are anticipated in addition to PhD and post-doctoral students.  Workshop sessions will be organized by regions and topics that will be specified in the workshop's second circular. Sessions will include 30 minute oral presentations and poster sessions. Solicited papers will open the thematic sessions, and a general discussion is scheduled to close the workshop.

Potential participants are requested to forward their proposed title and a brief abstract to:


zanchetta dst.unipi.it, bini dst.unipi.it, harvey.weiss yale.edu, yanjun_cai ieecas.cn

before October 25, 2017.

The workshop will arrange for the publication of individual papers and  potential synthesis papers  in a special issue of an international peer reviewed journal.
The "4.2 ka BP event international workshop" will be free of charge, but travel and hotel expenses are not included. A list of convenient hotels will be provided and possible grant applications for young researchers will be communicated in the next circulars.