Datasets
Wave height is the vertical distance between trough and crest. Wave period is the time between the passage of one wave crest and the next. The arrow direction is the direction the waves are moving towards...
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These charts provide information on current Tropical Cyclone activity. Select the ...
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This chart shows the potential for tropical cyclone activity at different time ranges during the ...
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Tropical relaxation experiment run at Tco199 for 46 days over 20 years starting on 12, 16 , 19, 23, 26 , 30 December and 2nd, 6th and 9th January 1999-2018.
Examples
retrieve, class=rd, stream=enfh, expver=iknn, type=pf, number=1/to/4, levtype=sfc, param=2t, date=20191212, hdate=20091212, time=00:00:00, step=24, target='output.grib'Retrieving 2-meter temperature of the hindcast starting on 12 December 2019 for all perturbed members.
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The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at a ...
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The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at a ...
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The charts show mean frequency and accumulated cyclone energy of tropical storm activity. ...
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This chart provides information on the verification of forecasts of the expected number of ...
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The charts show the evolution of existing and potential tropical cyclone activity. ...
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The ECMWF seasonal forecasts (SEAS5) are produced every month with a 51-member ensemble at a ...
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50-member extended-range hindcasts (46 days) targeting 2018 stratospheric sudden warming. Two initialisation dates considered: 2018-01-27 and 2018-01-31. Resolution TCo639L137. CY47R3.
Examples
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These diagrams show the evolution of regimes indicative of likely weather by week around ...
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Interval/period: Thu, 10/18/2018 - Wed, 07/31/2019
It has been generated using the UERRA-HARMONIE system by combining model data with observations into a complete and consistent dataset using the laws of physics.
Interval/period: Thu, 10/18/2018 - Wed, 07/31/2019
UERRA-HARMONIE and MESCAN-SURFEX systems. Forecasts up to 30 hours initialised
from the analyses at 00 and 12 UTC are available only through the CDS-API (see Documentation).
UERRA-HARMONIE is a 3-dimensional variational data assimilation system,
while MESCAN-SURFEX is a complementary surface analysis system.
Using the Optimal Interpolation method, MESCAN provides the best estimate of daily accumulated precipitation
Interval/period: Thu, 10/18/2018 - Wed, 07/31/2019
combined with observations using the UERRA-HARMONIE system and MESCAN-SURFEX system.
UERRA-HARMONIE is a 3-dimensional data assimilation system, whereas
MESCAN-SURFEX is a complementary surface analysis system. In general, the
assimilation systems are able to estimate biases between observations and to
sift good-quality data from poor data. The laws of physics allow for estimates
Interval/period: Thu, 10/18/2018 - Wed, 07/31/2019
Contains uncompressed IEEE-754 Standard (1985) 64-bit floating-point single-time atmospheric and wave model (long window 4Dvar) outputs for experiment version 'hplp'. Surface, and model and pressure levels are available for the atmospheric model.
Examples
retrieve, anoffset=9, class=rd, date=2020-07-21, expver=hplp, levtype=sfc, param=2t, step=24, stream=lwda, time=00:00:00, type=fc, target='output.grib'Get day-one forecast of 2 metre air temperature (single level)
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Uncoupled ensemble subseasonal reforecasts (ENS-U) with ocean and sea ice boundary conditions derived from observed values at initialisation time. In these experiments, SSTs are specified using daily values from the Operational Sea Surface Temperature and Ice Analysisthat are persisted as anomalies on top of a daily mean SST climatology (1979-2001) derived from the ERA40 reanalysis.
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Interval/period: Tue, 07/05/1994 - Sun, 02/28/2021
River discharge
Volumetric soil moisture
Snow water equivalent
Soil wetness index (root zone)
Runoff water equivalent (surface plus subsurface)
Interval/period: Wed, 10/14/2020 - Sun, 07/05/2026
Interval/period: Sun, 01/03/1999 - Sat, 11/25/2023
**Note:** In **June 2023** ECMWF implemented a **major upgrade ...**
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This diagram shows the variation of Relative Operating Characteristics (ROC) scores with various ...
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**Note:** In **June 2023** ECMWF implemented a **major upgrade ...**
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This dataset provides gridded modelled hydrological time series forced with medium-range meteorological forecasts. The data is a consistent representation of the most important hydrological variables across the European Flood Awareness System (EFAS) domain. The temporal resolution is sub-daily high-resolution and ensemble forecasts of:
River discharge
Soil moisture for three soil layers
Snow water equivalent
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