Development of C3S software for data analysis from climate C3S-34a Lot 2 / SC1

The Copernicus Climate Change Service is developing solutions that will help users assess Global Climate Models (GCMs) projections using well-established metrics and manipulation tools and receive outputs tailored to their needs. In particular, the project aims to provide products that address the needs of the coastal, water, insurance and energy sectors.

The system will allow users to access, visualize and manipulate the large data sets that are produced by climate models without having to download them to their own machine. It will combine software that have been developed by partners, either individually or within earlier European projects, into one single system. The software will contain modules to calculate standardized metrics and indices for each model, so that the models’ performance can be assessed quickly.

Users’ benefits are: • no need to download and store large data sets • data access from anywhere • easily performing the same analysis for several datasets • automatically generated metrics for indicating data sets’

quality • logged commands to make work reproducible • pre-defined functionalities for reducing programming

work-load • easier usability of climate model data by tailored tools

for specific sectors (insurance, water, energy, coastal)

How it will work: Via the software the user issues a request for a specific calculation. This can be a simple call to calculate the area average of some variable from one model, or a complex evaluation of several climate models against observations. The software will translate the request into actions: locate data, perform calculation, store and display the result.

The lead contractor is the Royal Netherlands Meteorological Institute. Contacts: Wim Som de Cerff (project lead) (sdecerf@knmi.nl) Andreas Sterl (science lead) (andreas.sterl@knmi.nl Jitske Burgers (service manager) (jitske.burgers@knmi.nl)

Current status: In C3S-34a Lot 2 there are interfaces with both the underlying infrastructure and data layer (Lot1) as well as the users. For this reason it is vital we quickly have something to show, to better communicate with all stakeholders. We are therefore starting with the creation of a Minimal Viable Product (MVP).

The MVP builds on the climate4impact software build as part of the European IS-ENES, IS-ENES2 and CLIPC projects. It combines this with the ESMValTool software developed in (among others) the EMBRACE and KliSAW projects.

The design of the MVP system is a cut-down version of the complete Design (see diagrams). Files are read from a local copy of the input data (CMORized CMIP5 data) and processed on demand using a (for now) simple reformat ESMValTool diagnostic. All this is controlled by the WPS backend in the Climate4Impact portal.

The complete system is available on GitHub as open source, and provided as a Docker Container for easy testing and deployment.