30-31 Jan 2017, Hamburg, MPI-M (Geomatikum Building, Bundesstr. 55, room 1729)

Conveners: Victor Brovkin and Lena Boysen (MPI, Germany)

The meeting of CRESCENDO terrestrial modelling groups was dedicated to the preparation of experiments designed to quantify land use effect on climate. 20 scientists from 7 European ESM groups discussed new aspects of the land use change (LUC) dataset prepared for the historical CMIP6 simulation. This new LUC forcing is much more complex than it was for CMIP5. How could models with different land cover structure interpret LUC scenarios in a consistent way? For example, this new forcing includes rangeland as a new LUC class. Some models assume that rangelands are natural vegetation and ignore the new class, while others treat rangelands as pastures, which are cleaned of forests, and suppress fires etc. Another divergence issue is on sub-grid scale transitions. Several models use so-called gross transitions accounting for crop rotations within grid cell, while others use simplified net transitions. Gross transitions are more difficult to implement; however, they better reflect changes in the land carbon budget. These and other details of the LUC dataset and their usage in ESMs were intensely discussed in a Q&A telecon session with George Hurtt of the University of Maryland, head of the group developing the land use forcing for CMIP6.

Read more

15-16 November 2016, Ludwig-Maximilians-Universität München (LMU), Germany

Conveners: Veronika Eyring, Björn Brötz, Axel Lauer, Alexander Löw, Ben Müller, and Mattia Righi

The 2nd workshop on the technical development of the Earth System Model Evaluation Tool (ESMValTool) was held at the Ludwig-Maximilians-Universität München (LMU) in the Department of Geography from 15-16 November 2016. The ESMValTool is developed as a community system, open to both users and developers, hence encouraging open exchange of evaluation methods and results (Eyring et al., 2016c). This will facilitate and improve Earth System Model (ESM) evaluation beyond the state-of-the-art and aims at supporting model evaluation and development activities at individual modelling centres and within the Coupled Model Intercomparison Project (CMIP). It is envisaged to run the tool routinely on model output submitted to CMIP Phase 6 (CMIP6, Eyring et al. (2016a)), utilizing observations and reanalyses available through the Earth System Grid Federation (ESGF) in standard formats (obs4MIPs/ana4MIPs) or provided by the user.


To download the workshop summary as pdf click here


Read more

27-29 Sept 2016, Rome, Italy

This year, CRESCENDO’s General Assembly was held by Project Partner CNR at its headquarters in Rome, Italy. Special thanks go to Jost von Hardenberg for acting as local organiser for this meeting. The annual meeting ran over two full days (27-28th sept) plus an extra day (29th Sept) with optional attendance dedicated to a half-day scoping meeting focused on “Potential CRESCENDO contributions to the 1.5/2C warming Special Report” with around 50 attendees. It was a very successful meeting with over 80 attendees from all CRESCENDO partners, plus one representative, Pier Luigi Vidale from the H2020 project PRIMAVERA and one representative, Wilfran Moufouma-Okia from the IPCC Working Group I.

All presentations from the meeting and full version of the meeting minutes and post-meeting survey results have now been made available on our Intranet (https://www.crescendoproject.eu/intranet/member-account-page/members-login-page/).

Read more

The carbon cycle is a key component of the climate system and supporting carbon cycle development, simulations and analysis is a central strand of CRESCENDO.

By Chris Jones (MOHC, UK). 23-24 May, 2016. UPMC Jussieu campus, Paris, France

In May, 15 scientists, including representative from 6 CRESCENDO partners met in Paris to discuss and finalise experiment plans for C4MIP: the Coupled Climate-carbon cycle Model Intercomparison Project (www.c4mip.net)

Chris Jones from the Met Office Hadley Centre, co-chair of C4MIP and CRESCENDO RT lead for Evaluation (RT2), organised the workshop which was supported by CRESCENDO travel funding and kindly hosted by CRECENDO partner, IPSL in Paris. The workshop was targeted at European carbon cycle modellers: “We thought about hosting the meeting in Exeter”, Chris explained, “but we wanted to minimise travel time and carbon emissions which made Paris – a much more central and accessible venue – the perfect option.”

Read more

By Helena Martins (SMHI), International Conference for Regional Climate, CORDEX, 17th-20th of May 2016, Stockholm, Sweden.

`We are all climate communication heroes!’, with this statement Asher Minns started the Early Career Scientists side-event on science communication during the ICRC-CORDEX conference held in Stockholm, Sweden from 17th-20th of May 2016 (http://www.icrc-cordex2016.org).

Read more

The Benefits of EU Collaboration for Higher Education and Research

On Thursday 9 June 2016, CRESCENDO participated in one of the final Universities for Europe events before the EU referendum on 23 June. The event was organised and hosted by Universities UK, in partnership with ResPublica and Scientists for EU.

A community diagnostics and performance metrics tool for the evaluation of Earth system models (ESMs) in CMIP has been developed that allows for routine comparison of single or multiple models, either against predecessor versions or against observations.

Read more