Centro Euro-Mediterraneo sui Cambiamenti Climatici (CMCC)

The Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici (Fondazione CMCC) is a non-profit research institution, established with the financial support of the Italian Ministry of Education, University and Research and the Ministry of the Environment Land and Sea, the Ministry for Agricultural and Forestry Policies and the Ministry of Finance.
CMCC involves and links private and public institutions jointly investigating multidisciplinary topics related to climate science research. CMCC research activities are distributed among eight research divisions that share different knowledge and skills in the field of climate science: Advanced Scientific Computing (ASC) Division; Climate Simulation and Prediction (CSP) Division; Economic analysis of Climate Impacts and Policy (ECIP) Division; Impacts on Agriculture, Forests and Ecosystem Services (IAFES) Division; Ocean modelling and Data Assimilation (ODA) Division; Ocean Predictions and Applications (OPA) Division; Risk Assessment and Adaptation Strategies (RAAS) Division; Regional Models and geo-Hydrological Impacts (REHMI) Division.

CMCC’s mission is to investigate and model our climate system and its interactions with society to provide reliable, rigorous, and timely scientific results, which will in turn stimulate sustainable growth, protect the environment, and develop science driven adaptation and mitigation policies in a changing climate. CMCC collaborates with experienced scientists, economists, and technicians, which work together in order to provide full analyses of climate impacts on various systems such as agriculture, ecosystems, coasts, water resources, health, and economics. CMCC also supports policymakers in setting and assessing costs, mitigation, and adaptation policies.

CMCC operates its own Supercomputing Center (located in the “Ecotekne” Campus in Lecce) whose HPC facilities have been ranked among the most powerful supercomputing systems in the world and among the most powerful computational facilities in Italy. The CMCC HPC facility is an IBM iDataplex supercomputer based on Intel E5-2670 multicore architecture and InfiniBand FDR interconnection, with two DDN SFA10000 storage subsystems capable to offer a storage capacity of about 840TB in total and an I/O performance of 6GBytes/sec per disk array (about 8000 Intel Xeon Sandy Bridge cores, 160 TFlops peak performance).

Development and maintenance of NEMO configurations
The NEMO model is a key part of the CMCC modelling framework to operates ocean forecasting systems and produces ocean reanalysis products on global and regional scales.

We use global configurations from coarse (1º) to eddying (1/16º) resolution. Resolutions of 1º and 1/4º are used as part of the CMCC coupled climate and Earth-System models and form the ocean component of the CMCC contribution to the CMIP6 experiments.
CMCC develops and operationally maintains the Black Sea Forecasting System, which is actually implemented at 1/27°×1/36° horizontal resolution (~3 km) and 31 z-levels with partial steps, forced by operational ECMWF high resolution atmospheric fields. The processing system produces 10-days forecast, 3/14-days analysis and 1-day simulation in the framework of Copernicus Marine Service (CMEMS, marine.copernicus.eu).

CMCC supports and contributes to the development and maintenance of the different component of the NEMO framework and activities participates to the ongoing scientific discussions in the working groups on HPC, configuration manger, TOP and Sea ice.
In particular, CMCC provides needed expertise to contribute to the NEMO computational performance optimization. Due to the experience on scalability improvement, optimization and parallelization of numerical models, and documented contributions to the international exascale roadmaps for next generation climate models, CMCC works on code re-design in order to better exploit the modern HPC systems capability. This includes the investigation of hybrid parallel approaches to improve current NEMO scalability on many-cores architectures, also equipped with accelerators/coprocessors, and single-core performance investigation to increase peak performance exploitation.
CMCC is also actively working on the developments of TOP core engine to improve physical and biogeochemical processes of shared modules and it maintains the coupling with the Biogeochemical Flux Model (BFM).
CMCC, as part of the Configuration Manager Working Group, coordinates the development of a unique architecture able to define the main components of a NEMO-based configuration and exploit NEMO numerical modelling capabilities. In particular, CMCC is involved in developing and testing tools for managing open boundaries in regional configurations.