Datasets

Hourly and daily gridded air quality surface concentrations derived from in situ low-cost sensor measurements over Europe from 2018 to 2024

This dataset provides surface-level particulate matter (PM2.5 and PM10) concentrations derived from in situ low-cost sensor (LCS) measurements, produced by the European Centre for Medium-Range Weather Forecasts (ECMWF) in the context of the Horizon Europe All Data for Green Deal project. This dataset differs from existing air quality datasets by combining crowdsourced observations with a robust correction framework, producing high-resolution, reference-aligned gridded products.

calendar_today Interval/period: Mon, 01/01/2018 - Tue, 12/31/2024

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Hurricane/Typhoon Frequency - Seasonal Forecast - SEAS5

The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at a ...

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Hurricane/Typhoon Number (Verification) - Seasonal Forecast - SEAS5

This chart provides information on the verification of forecasts of the number of tropical ...

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Hydrology-related climate impact indicators from 1970 to 2100 derived from bias adjusted European climate projections

This dataset provides water variables and indicators based on hydrological impact modelling, forced by bias adjusted regional climate simulations from the European Coordinated Regional Climate Downscaling Experiment (EURO-CORDEX). The dataset contains Essential Climate Variable (ECV) data in the form of daily mean river discharge and a set of climate impact indicators (CIIs) for both water quantity and quality.
ECV datasets provide the empirical evidence needed to understand the current climate and predict future changes.

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Ice sheet surface elevation change rate for Greenland and Antarctica from 1992 to present derived from satellite observations

This dataset provides estimates of surface elevation change over the Greenland and Antarctic ice sheets since 1992, utilizing satellite radar altimetry from five missions: ERS-1, ERS-2, ENVISAT, CryoSat-2, and Sentinel-3A. The surface elevation change is modelled over successive, overlapping periods and reported monthly.

calendar_today Interval/period: Wed, 01/01/1992 - Mon, 05/11/2026

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Ice sheet velocity for Antarctica and Greenland derived from satellite observations

This dataset provides annual ice velocity maps of the Greenland and Antarctic Ice Sheets derived from Sentinel-1 data. The product represents the current state-of-the-art in Europe for satellite-based ice velocity data records. It follows from the European Space Agency (ESA) Climate Change Initiative (CCI) and is guided by the Global Climate Observing System (GCOS) targets for the Ice Sheets Essential Climate Variable (ECV).

calendar_today Interval/period: Sun, 10/01/2017 - Mon, 05/11/2026

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IFS EDT case study for ICON

Case study with an experimental IFS EDT configuration (CY49R2). Initialized on 2024-05-27 at 00Z. Outputting votemper, vosaline, vozocrtx, vomecrty on all ocean model levels.

Examples

retrieve, class=rd, date=2024-05-27, expver=inq9, stream=oper, type=fc, levtype=sfc, param=2t, time=00:00:00, step=24, target='output.grib'

2m-temperature at step 24

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Member States Projects

Some Member States also archive output other than from IFS into MARS. One example of such activity is the COSMO-LEPS forecast suite, running daily at ECMWF.

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Member States Test Experiments

These are experiments created by ECMWF Member States.

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Methane data from 2002 to present derived from satellite observations

This dataset provides atmospheric CH₄ observations as derived from satellite radiances. It consists of two types of products each covering a different part of the atmosphere: (i) The average CH₄ mixing ratio of the entire atmosphere from the Earth’s surface to the top of the atmosphere. These column-averaged mixing ratio products are referred to as “XCH4” products. (ii) Mid-tropospheric (MT) CH₄ mixing ratio products. These products are referred to as "MTCH4" products. These products can be used to monitor the spatial distribution and temporal evolution of CH₄.

calendar_today Interval/period: Tue, 10/01/2002 - Tue, 12/31/2024

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Methane forecasts

CAMS methane forecasts

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Model fields with additional output of convective fields for snow and rain

A 49R1 forecast experiment has been run to generate model fields which can be used to run an offline forward operator for polarimetric radio occultation observations. The fields include convective snow and rain, which are not a standard output for operations. The dates fit to Atmospheric River and Tropical Cyclone cases used for testing the forward operator generating simulated PRO fields (dPhi) and comparing them to observed ones.

Examples

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Monsoon Indices - Seasonal Forecast - SEAS5

The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at ...

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Monthly and 6-hourly total column water vapour over ocean from 1988 to 2020 derived from satellite observations

Water vapour is has been recognised as an Essential Climate Variable as it provides the basis for all cloud formation and physics and furthermore influences the Earth's heat budget due to its high absorbance of long and short-wave radiation. Total column water vapour (TCWV) is a measure of the integrated water vapour content of the atmosphere.
This catalogue entry provides the TCWV data product usually called Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data (HOAPS).

calendar_today Interval/period: Wed, 05/01/2002 - Thu, 03/01/2012

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Monthly drought indices from 1940 to present derived from ERA5 reanalysis

ERA5–Drought is a global reconstruction of drought indices from 1940 to present.
The dataset comprises two standardised drought indices:
- the Standardised Precipitation Index (SPI)
- the Standardised Precipitation-Evapotranspiration Index (SPEI).

calendar_today Interval/period: Mon, 01/01/1940 - Sun, 03/01/2026

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Mountain tourism meteorological and snow indicators for Europe from 1950 to 2100 derived from reanalysis and climate projections

This dataset provides meteorological and snow indicators for Europe, characterizing operating conditions of winter ski resorts under past and future climate scenarios. The dataset consists of 39 indicators of atmospheric and snow conditions computed in a similar manner for all mountain regions in Europe at the scale of NUTS-3 regions (Nomenclature of Territorial Units for Statistics) and by steps of 100 m elevation.

calendar_today Interval/period: Sun, 01/01/1950 - Fri, 01/01/2100

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MUCAPE and MUCIN

MUCAPE (Most Unstable Convective Available Potential Energy) is an indicator of atmospheric instability (the susceptibility of the troposphere to support free convection) and...

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Multi-model seasonal forecasts of river discharge for Europe from January 2021 to present

This dataset provides hydrological seasonal forecasts of monthly mean river discharge across Europe. Two hydrological model ensembles are provided. The first is an E-HYPE multi-model system comprising eight model realisations using a catchment-based resolution. The second comprises the E-HYPEgrid, VIC-WUR and EFAS (LISFLOOD) hydrological models at a 5km gridded resolution.

calendar_today Interval/period: Tue, 12/01/2020 - Wed, 04/01/2026

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Multi-model seasonal reforecasts of river discharge for Europe

This dataset provides hydrological seasonal reforecasts of monthly mean river discharge across Europe for the period 1993 to 2016. The first is an E-HYPE multi-model system comprising eight model realisations using a catchment-based resolution. The second comprises the E-HYPEgrid, VIC-WUR and LISFLOOD-EFAS hydrological models at a 5km gridded resolution.

calendar_today Interval/period: Fri, 01/01/2021 - Mon, 05/11/2026

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Multi-parameter EFI during last 24 hours

These charts aim to point towards areas where anomalous weather is likely to occur. ...

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Multiparam: Weekly mean anomalies

This chart shows 7-day mean anomalies for a range of parameters from the ECMWF Sub-seasonal ...

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Near surface meteorological variables from 1979 to 2019 derived from bias-corrected reanalysis

This dataset provides bias-corrected reconstruction of near-surface meteorological variables derived from the fifth generation of the European Centre for Medium-Range Weather Forecasts (ECMWF) atmospheric reanalyses (ERA5). It is intended to be used as a meteorological forcing dataset for land surface and hydrological models.

calendar_today Interval/period: Mon, 01/01/1979 - Mon, 12/31/2018

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nextGEMS - Future Projection - IFS-FESOM

The nextGEMS data is aligned with the Climate Change Adaptation Digital Twin. The DestinE Digital Twin for Climate Change Adaptation (Climate DT) supports adaptation activities by providing innovative climate information on multi-decadal timescales, globally, at scales at which many impacts of climate change are observed.

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nextGEMS - Historical Simulation - IFS-FESOM

The nextGEMS data is aligned with the Climate Change Adaptation Digital Twin. The DestinE Digital Twin for Climate Change Adaptation (Climate DT) supports adaptation activities by providing innovative climate information on multi-decadal timescales, globally, at scales at which many impacts of climate change are observed.

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Nino Annual Plumes (Verification) - Seasonal Forecast - SEAS5

This chart provides a range of skill scores relating to forecasts of the evolution of the sea ...

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