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The Copernicus Interactive Climate Atlas (referred to as C3S Atlas hereafter) is a web application of the Copernicus Climate Change Service (C3S) allowing for flexible temporal and spatial exploration and analysis of recent past trends and projected future changes for a wide range of key climate variables and for multiple datasets (commonly used as alternative lines of evidence for climate change assessment).
The application explained/described
The C3S Atlas is organized in three main panels (information, selection and display), as shown in Figure 1. The information panel (a) displays the information (title and full description) of the current selection. The selection panel (b) allows selecting the particular dataset, variable/index and dimension of analysis. The display panel (c) shows different interactive climatic products associated with the current selection, such as maps showing spatial information for the full geographical extent (as in Figure 1), or time series, stripes and other products displaying regional information for pre-defined (or customized) regions (not shown in the figure). In the following sections we describe these elements in detail.
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Figure 1. Main screen of the C3S Atlas displaying the three main panels: (a) information, (b) selection and (c) display (note that the User Guide –this document– is available from the op right link). The default configuration displays an interactive map with the spatial information of the climate change signal (relative to the pre-industrial period 1850-1900) for mean temperature for a 2º global warming level obtained from the CMIP6 ensemble of global climate projections (labeled as “Mean temperature (°C) - CMIP6 - Change - Warming 2°C - Annual - rel. to 1850-1900” in the information panel).
The Information Panel
The information panel in Figure 1(a) displays the information (variable, dataset and dimension of analysis) for the current selection. This is used as the title of the corresponding graphical climate products displayed in panel (c). A full description with comprehensive information is provided by clicking on the "i" information button on the right side of the information panel. For instance, Figure 2 shows the information displayed for the default configuration of the C3S Atlas corresponding to “Mean temperature (°C) - CMIP6 - Change - Warming 2°C - Annual - rel. to 1850-1900”. The panel shows detailed information about the selected variable and dataset (the CMIP6 ensemble of global climate change projections in this case), as well as additional information on the different choices (global warming level, baseline periods, etc.).
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Figure 2. Comprehensive description of the selected climate product available from the "i" information button on the right side of the information panel. This figure shows the information corresponding to the default selection displayed in Figure 1 (only the initial part is shown).
The Selection Panel
The selection panel includes the different choices required to define the climatic product of interest and is organized in three main modules, as shown in Figure 3: (a) selection of variable/index and dataset, (b) selection of the dimension of analysis and (c) palette of color and range of displayed values (including autofit/reset options to adapt/restore the ranges according to the current view).
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Finally, the colorbar on the bottom (Figure 3c) is interactive and allows user-defined selection of color palettes and color ranges. The colors are displayed on a continuous scale and the minimum/maximum values can be adjusted by clicking and dragging the labels, or using the autofit tool. The box next to the colorbar shows the legend for the methods representing robustness/uncertainty (significance for observations/reanalysis trends, and robustness for model projection changes).
The Display Panel
A particular choice of the selection panel (variable, dataset, period and dimension of analysis) determines a climate product (e.g. mean temperature (°C) - CMIP6 - change - warming 2°C - annual - relative to 1850-1900, see Figure 1) which is graphically represented in the display panel in the form of a map. The map represents gridbox information for the full spatial extent of the dataset (global or regional, with different spatial resolutions, from 2º to 0.05º depending on the selected dataset; see the Atlas dataset documentation for details). The map shows the temporally aggregated (using the mean, minimum/maximum or accumulated, depending on the variable) values for the reference period (or changes relative to a baseline) over the season of interest, and is dynamically updated when changing any choice in the selection panel; note that for projection datasets the map represents the ensemble mean values (individual information on the members of the ensemble is available only for regional products).
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Note that robustness results are computed at a gridbox level and are not representative of regionally aggregated results over larger regions (less influenced by local variability).
Application updates
The first version of the C3S Atlas was launched on 20 February 2024. Since then, the following periodic updates including different fixes (typos and not-substantial changes, improvements and errors/bugs) have been implemented in the different versions described below (in chronological order with new versions on the top).
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Note: The following categories are used for the changes below:
Changes and fixes can correspond to the different elements of the Atlas:
New features are indicated with a special tag (new-feature). |
| Version | Changes description |
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Version 1.1
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Version 1.0
| First version of the C3S Atlas launched. |
Known-problems and update plans: We are working in the following known problems to include fixes in the coming versions:
- Problems exporting NetCDF/Tiff: Some exported files don't include the whole geographical domain.
- Optimize layouts of exported PDF/PNG figures.
- Unavailable options (e.g. variables not available for a particular dataset) will been disabled (grayed out) instead of hiding them.
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This document has been produced in the context of the Copernicus Climate Change Service (C3S). The activities leading to these results have been contracted by the European Centre for Medium-Range Weather Forecasts, |
| Info |
This document has been produced in the context of the Copernicus Climate Change Service (C3S). The activities leading to these results have been contracted by the European Centre for Medium-Range Weather Forecasts, operator of C3S on behalf of the European Union (Delegation Agreement signed on 11/11/2014 and Contribution Agreement signed on 22/07/2021). All information in this document is provided "as is" and no guarantee or warranty is given that the information is fit for any particular purpose. The users thereof use the information at their sole risk and liability. For the avoidance of all doubt , the European Commission and the European Centre for Medium - Range Weather Forecasts have no liability in respect of this document, which is merely representing the author's view |
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