Tentative Title: Copernicus Interactive Climate Atlas gridded monthly dataset
Overview: This catalogue entry provides gridded data from observations (E-OBS), reanalyses (ERA5, ERA5-Land and ORAS5) and global (CMIP5 and CMIP6) and regional (CORDEX) climate projections for the set of 30 variables and indices included in this first version of the Copernicus Interactive Climate Atlas. This dataset complements and evolves the Gridded monthly climate projection dataset underpinning the IPCC AR6 Interactive Atlas building on (reproducible from) the datasets provided in the CDS catalogues and including new variables and indices describing various types of climatic impact-drivers: heat and cold, wet and dry, snow and ice, wind and radiation, ocean, and circulation characteristics of the climate system.
This dataset includes gridded information with monthly/annual temporal resolution for observations/reanalyses of the recent past and climate projections based on Representative Concentration Pathways (RCP) / Shared Socioeconomic Pathways (SSP) scenarios for the 30 variables and indices computed from daily/monthly data (as necessary) across the different datasets. The ensemble (and some single-model) datasets are harmonised using regular grids with horizontal resolutions of 2° (CMIP5), 1° (CMIP6), 0.5° (ORAS5), 0.25° (CORDEX-CORE), and 0.125º (CORDEX-EUR, E-OBS); others (ERA5, ERA5-Land) are preserved in their original grids to avoid interpolation artefacts. Note that the harmonized CORDEX datasets building on the CDS CORDEX catalogue (with a 0.5º resolution) for the individual domains (with the exception of Europe) were already included in the Gridded monthly climate projection dataset underpinning the IPCC AR6 Interactive Atlas.
This dataset allows the reproduction, expansion and customisation of the climate change products provided interactively by the Copernicus Interactive Climate Atlas, an interactive web application displaying global/continental maps of observed trends and climate changes for future periods across scenarios or for global warming levels, and regionally-aggregated time series, seasonal cycle plots and climate stripes.
Related datasets, also available through the CDS, include the E-OBS, ERA5, ERA5-Land and ORAS5 datasets and the CMIP5/6 global climate projections and the CORDEX regional climate projections.
License: This dataset is distributed under a Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Overview figure (proposal)
Documentation:
The Copernicus Interactive Climate Atlas (http)
The Copernicus Interactive Climate Atlas is a web application providing graphical information about recent past trends and future changes (for different scenarios and global warming levels) across the different C3S datasets and variables/indices included in the "Copernicus Interactive Climate Atlas gridded monthly dataset".
THIS WILL BE ACTIVATED ONCE THE VIEWER WILL BE DEPLOYED!
Description of the datasets and variables used in the Copernicus Interactive Climate Atlas gridded monthly dataset (http)
Describes the underlying datasets (observations, reanalyses and projections) and variables/indices included in the first version of the dataset. It also describes methodological aspects, such as harmonization and regridding, bias adjustment, and quality check.
LINK: https://confluence.ecmwf.int/x/mQ1mFg
(The original Word document: Documentation-Atlas-dataset-v3Final.doc)
DATA DESCRIPTION | |
Data type | Gridded |
Horizontal coverage | Global (ERA5, ERA5-Land, ORAS5, CMIP5/6, CORDEX-CORE), regional domain (CORDEX-EUR, E-OBS) |
Horizontal resolution | CMIP5: 2°x2°, CMIP6: 1°x1°, CORDEX-CORE and ORAS5: 0.25°x0.25°, CORDEX-EUR and E-OBS: 0.125°x0.125°; ERA5 and ERA5-Land on their native grids (25km and 12.5km, respectively) |
Vertical resolution | Variables are provided at a specific single level for each variable. That level may differ among the variables. |
Experiments | Historical and RCP (2.6, 4.5 and 8.5) and SSP (1-2.6, 2-4.5, 3-7.0 and 5-8.5) scenarios for projections |
Temporal coverage | 1950-2002 for observations/reanalysis and 1850-2100 for projections overall, but depends on the dataset |
Temporal resolution | Monthly or annual |
File format | NetCDF4 |
Conventions | Climate and Forecast (CF) Metadata Convention v1.9 Attribute Convention for Data Discovery (ACDD) 1.3 compliant |
Version | v1 |
Update frequency | Periodically |
License | CC-BY 4.0; see more details |
VARIABLES AND INDICES | ||
Name | Description | Units |
Monthly mean of daily mean temperature | Monthly mean of daily mean near-surface (2 meters) air temperature | °C |
Monthly mean of daily minimum temperature | Monthly mean of daily minimum near-surface (2 meters) air temperature | °C |
Monthly mean of daily maximum temperature | Monthly mean of daily maximum near-surface (2 meters) air temperature | °C |
Monthly minimum of daily minimum temperature | Monthly minimum of daily minimum near-surface (2 meters) air temperature | °C |
Monthly maximum of daily maximum temperature | Monthly maximum of daily maximum near-surface (2 meters) air temperature | °C |
Monthly count of days with maximum temperature above 35 °C | Monthly count of days with maximum near-surface (2 meters) temperature above 35 °C | days |
Monthly count of days with bias adjusted maximum temperature above 35 °C | Monthly count of days with bias adjusted (simple linear scaling: mean adjustment; reference period: 1971-2010; reference dataset: WFDE5 bias adjusted ERA5) maximum near-surface (2 meters) temperature above 35 °C. | days |
Monthly count of days with maximum temperature above 40 °C | Monthly count of days with maximum near-surface (2 meters) temperature above 40 °C | days |
Monthly count of days with bias adjusted maximum temperature above 40 °C | Monthly count of days with bias adjusted (simple linear scaling: mean adjustment; reference period: 1971-2010; reference dataset: WFDE5 bias adjusted ERA5) maximum near-surface temperature above 40 °C | days |
Monthly count of frost days | Monthly count of days with minimum near-surface (2 meters) temperature below 0 °C | days |
Annual heating degree-days | Annual energy consumption to heat the deficit of temperature below 15.5 °C | °C day |
Annual cooling degree-days | Annual energy consumption to cool the excess of temperature above 22 °C | °C day |
Monthly mean of daily accumulated precipitation | Monthly mean of daily accumulated precipitation of liquid water equivalent from all phases | mm |
Monthly mean of daily accumulated snowfall precipitation | Monthly mean of daily accumulated liquid water equivalent thickness snowfall | mm |
Monthly maximum of 1-day accumulated precipitation | Monthly maximum of 1-day accumulated precipitation of liquid water equivalent from all phases | mm |
Monthly maximum of 5-day accumulated precipitation | Monthly maximum of 5-day accumulated precipitation of liquid water equivalent from all phases | mm |
Annual consecutive dry days | Annual maximum of consecutive days when daily accumulated precipitation amount is below 1 mm | days |
Standardized Precipitation Index (SPI) for 6 months cumulation period | Monthly index that compares accumulated precipitation for 6 months with the long-term distribution (reference period: 1971-2010) for the same location and accumulation period, as the number of standard deviations from the median | Dimensionless |
Standardized Precipitation-Evapotranspiration Index (SPEI) for 6 months cumulation period | Monthly index that compares accumulated precipitation minus potential evapotranspiration (Hargreaves method) for 6 months with the long-term distribution (reference period: 1971-2010) for the same location and accumulation period, as the number of standard deviations from the median | Dimensionless |
Monthly mean of daily mean wind speed | Monthly mean of daily mean near-surface (10 meters) wind speed | m s-1 |
Monthly mean of sea surface temperature | Monthly mean temperature of sea water near the surface | °C |
Monthly mean of sea-ice area percentage | Monthly mean percentage of sea grid cell area covered by ice | % |
Monthly near surface specific humidity | Monthly amount of moisture in the air near the surface divided by amount of air plus moisture at that location. | Dimensionless |
Monthly mean of daily accumulated evaporation (including sublimation and transpiration) | Monthly mean of daily amount of water in the atmosphere due to conversion of both liquid and solid phases to vapor (from underlying surface and vegetation) | mm |
Monthly mean of daily accumulated soil moisture in upper soil portion | Monthly soil shallow moisture content, as the vertical sum per unit area of water in all phases contained in the upper soil portion to a depth of 7 to 10 cm (depending on the dataset). | kg m-2 |
Monthly mean of daily accumulated runoff | Monthly mean of daily amount per unit area of surface and subsurface liquid water which drains from land | kg m-2 |
Monthly fraction of cloud cover | Monthly mean fraction (%) of the sky covered by clouds | % |
Monthly surface solar radiation downwards | Monthly incident solar (shortwave) radiation that reaches a horizontal plane at the surface | W m-2 |
Monthly surface thermal radiation downwards | Monthly incident thermal (longwave) radiation at the surface (during cloudless and overcast conditions) | W m-2 |
Monthly sea level pressure | Monthly average air pressure at mean sea level | Pa |
Note: The simple linear scaling (mean adjustment) method is described in Iturbide et al. (2021). Variables in boldface are new in the Copernicus Interactive Climate Atlas gridded monthly dataset (the others are common with the Gridded monthly dataset underpinning the IPCC Interactive Atlas).