14.05 - 15.05.2017  
Zaragoza, Spain
Contact person:
Bronwen Konecky, This email address is being protected from spambots. You need JavaScript enabled to view it.

The first in-person meeting of the Iso2k working group, a subgroup of PAGES 2k Network, will take place 14-15 May 2017 in Zaragoza, Spain, following PAGES' 5th Open Science Meeting.


The Consejo Superior de Investigaciones Científicas (CSIC, the Spanish National Research Council) offices in the Zaragoza City Center. Address: Plaza Emilio Alfaro Gracia, 2.

Please note this location is different from the OSM venue!


The workshop is open but limited to 40 participants. Coffee and lunch will be provided both days. A workshop dinner will be held 14 May at 20:30 at La Reserva (C/ Cádiz, 10, 50004, Zaragoza).

If you would like to eat lunch or dinner during the meeting, you MUST fill out this form by Monday 1 May! This form gives a head count for lunch and dinner, your order for our group dinner (which has to be placed in advance), and info on dietary restrictions.


Iso2k is creating a global database, to be finished in the coming months, of records of the stable isotopic composition of water (δ18O and δD). Iso2k will use the database to identify regional- and global-scale features in hydroclimate and atmospheric circulation during the past 2kyr and their relationship with PAGES temperature reconstructions. This effort is, as far as we know, the only active, global, multi-proxy hydroclimate database being constructed under PAGES2k/Hydro2k.

Iso2k has been meeting ~monthly via teleconference since it began in spring 2015.

Group members have identified a number of scientific questions that the database will be used to answer, including:

- How do water isotope proxy records capture changes in the tropical water cycle?
- Where and how well do the modern day temperature-hydrology relationships hold over the last 2k?

By May, we will be ready to analyze data from the Iso2k database to address these questions.


Iso2k has spent the past ~1.5  years assembling a database of O and H isotope based proxy records covering some part of the past 2,000 years. We're currently working on quality control of the "beta" version of the database. The goal of our meeting in Zaragoza is to evaluate patterns of climate and isotope proxies that are emerging from the Iso2k database. This meeting will be a very hands-on, active discussion of scientific results. In order to stimulate the most productive discussion possible, we are asking every participant to do a little legwork ahead of time. Participants have been placed into small "buddy groups" of people who share similar interests. Each group should come to the Zaragoza meeting with 1-2 plots/figures (per group) that they have made using the database. These figures can be very rough, and certainly don’t have to be pretty! We will build our discussion around them (see agenda).

At the end of these discussions, key points will be drafted to serve as the structure for a scientific paper. The second half of the second day will be dedicated to future planning and strategizing for Iso2k.


The Iso2k Team Meeting will be an active, science-focused workshop. As such, we expect meeting participants to actively participate in the Iso2k effort prior to and after the meeting, including helping with quality control, preliminary analyses, and/or data-model comparison.

If you are interested in joining us, please apply by filling out this form by 10 March. Feel free to distribute to colleagues who may be interested. Due to logistical reasons and to facilitate productive discussion, attendance will be limited to ~40.


Sunday 14 May 2017
8:00-8:30 Welcome
8:30-9:00 Introduction to Iso2k, past and future (Bronwen and Jud)
9:00-10:00 Status of Iso2k database v.0.2.1 (Nick), group brainstorm on pressing QC issues
10:00-10:45 Temp2k comparisons: Initial results (Belen) and discussion (group)
10:45-11:00 Coffee break
11:00-11:45 High latitudes: Initial results (Lukas) and discussion (group)
11:45-12:30 Models: Initial results (Samantha) and discussion (group)
12:30-13:30 Lunch (assortment of sandwiches and drinks will be catered) and group photo!
13:30-14:15 Climate modes (tropics/Pacific): Initial results (Jon/Diane) and discussion (group)
14:15-15:00 Climate modes (Atlantic): Initial results (Kristine) and discussion (group)
15:00-15:15 Coffee break
15:15-16:30 Group discussion on initial findings from all buddy groups (Bronwen/Jud to facilitate)
16:30-17:00 Initial structuring for scientific paper(s) (Bronwen to facilitate)
20:30 GROUP DINNER at La Reserva, C/ Cádiz, 10, 50004, Zaragoza (please RSVP and fill out the menu form, above in Logistics, by 1 May)

Monday 15 May 2017
8:30-9:00 Coffee
9:00-9:15 Breakout group instructions (Bronwen)
9:15-10:15 Small breakout group discussions
10:15-10:45 Reports back to bigger group
10:45-11:00 Coffee break
11:00-12:30 Structuring of scientific paper(s), continued
12:30-13:30 Lunch (assortment of sandwiches and drinks will be catered)
13:30-15:00 Quality Control…. the rabbit hole (Bronwen will facilitate)
15:00-15:30 Regrouping, next steps, timelines for Iso2k as a whole
15:30-17:00 PAGES Workshop report (Bronwen and anyone who is willing to help) and additional discussion time (everyone else)
17:00 Finish

Buddy groups

Models: Samantha Stevenson*, Sylvia Dee, Sentia Goursaud, François Klein
High latitudes: Lukas Jonkers*, Thomas Opel, Olga Churakova, Elizabeth Thomas**
Modes of climate variability (tropics/Pacific): Diane Thompson*, Jon Tyler*, Guillaume Leduc, Matthieu Carré, Jessica Conroy, Melissa Berke**
Modes of climate variability (Atlantic): Kristine DeLong*, Emilie Dassié*, Tim Shanahan, Matthew Jones, Laia Comas Bru, Matt Fischer**
Temp2k comparisons: Belen Martrat*, Nick McKay, Marie-Alexandrine Sicre, Georgy Falster, Nerilie Abram

* = group leader (will help facilitate discussion) ** = cannot attend meeting in person, but working on analyses with buddy group.


Ana Moreno, Pyrenean Institute of Ecology, CSIC, Speleothems
Anais Orsi, LSCE, CEA-CNRS-Université Paris-Saclay, Ice cores
Annie Putman, Geology and Geophysics, University of Utah, Isotopes in precipitation
Belen Martrat, Department of Environmental Chemistry, IDAEA-CSIC, Marine sediments
Bronwen Konecky, CIRES, University of Colorado Boulder, Lake sediments
Diane Thompson, Earth & Environment, Boston University, Corals
Emilie Dassié, LOCEAN IRD-UPMC, Paris, Corals
François Klein, ELIC, Université catholique de Louvain, Climate models, Data-model comparison techniques
Georgy Falster, Department of Earth Sciences, The University of Adelaide, Lake sediments
Guillaume Leduc, CEREGE, CNRS, Lake sediments
Jessica Conroy, Geology, University of Illinois Urbana-Champaign, Modern preciptiation and seawater, lake sediments, terrestrial gastropods
Jing Gao, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Ice cores
Jonathan Tyler, Department of Earth Sciences, University of Adelaide, Lake sediments
Jud Partin (maybe), Institute for Geophysics, University of Texas at Austin, Speleothems
Kristine DeLong, Geography and Anthropology, Louisiana State University, Corals
Laia Comas Bru, UCD School of Earth Sciences, University College Dublin, Ireland, Speleothems
Lukas Jonkers, MARUM, Universitaet Bremen, Marine sediments
Marie-Alexandrine Sicre, LOCEAN, CNRS, Marine sediments
Matthew Jones, School of Geography, University of Nottingham, Lake sediments
Matthieu Carré, Laboratoire d'Océanographie et du Climat, Paris CNRS, France, Mollusk shells
Nerilie Abram, Research School of Earth Sciences, The Australian National University, Ice cores and corals
Nick McKay, School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Lake sediments
Olga Churakova (maybe),, Environmental Sciences University of Geneva, Tree rings
Samantha Stevenson, Climate & Global Dynamics Laboratory, National Center for Atmospheric Research, Corals
Sentia Goursaud, LSCE, Gif-sur-Yvette, France Paris-Saclay, Ice cores
Sylvia Dee, Department of Earth, Environmental, and Planetary Sciences, Brown University, Water isotope modeling
Thomas Opel, Permafrost Lab, Department of Geography, University of Sussex, Ice wedges (+ ice cores)
Timothy Shanahan, Geology, University of Texas at Austin, Lake sediments.

Financial support

A small amount of PAGES funding is available to support local accommodation costs during the Iso2k meeting; early-career scientists and scientists from developing countries will receive priority. Please note no funding is available for travel, or for OSM costs.

Further information

If you have any questions, please feel free to contact Bronwen Konecky (This email address is being protected from spambots. You need JavaScript enabled to view it.) and Jud Partin (This email address is being protected from spambots. You need JavaScript enabled to view it.), coordinators of the Iso2k project.