What is ERA-interim?
ERA-Interim is a global atmospheric reanalysis that is available from 1 January 1979 to 31 August 2019. It has been superseded by the ERA5 reanalysis. The data assimilation system used to produce ERA-Interim is based on a 2006 release of the IFS (Cy31r2).
What are the changes from era-interim to ERA5?
ERA-5 has important changes compared to ERA-Interim, including more improved numerical model and data assimilation schemes, higher spatial and temporal resolution, assimilation of more observations, and improved versions of input observation and forcing datasets.
What does ERA5 mean?
ERA5 is the fifth generation ECMWF atmospheric reanalysis of the global climate covering the period from January 1950 to present. ERA5 is produced by the Copernicus Climate Change Service (C3S) at ECMWF. ERA5 provides hourly estimates of a large number of atmospheric, land and oceanic climate variables.
How do I download era-interim daily data?
ERA5 is available from the Climate Data Store (CDS). This knowledge base article shows you how to calculate daily total precipitation using ERA-Interim data. If you just want monthly means, then you can simply download it from http://apps.ecmwf.int/datasets/data/interim-mdfa/levtype=sfc/.
What is ERA5 land?
ERA5-Land is a reanalysis dataset providing a consistent view of the evolution of land variables over several decades at an enhanced resolution compared to ERA5. ERA5-Land has been produced by replaying the land component of the ECMWF ERA5 climate reanalysis.
What is ERA5 data?
ERA5 provides hourly estimates of a large number of atmospheric, land and oceanic climate variables. The data cover the Earth on a 30km grid and resolve the atmosphere using 137 levels from the surface up to a height of 80km.
What does Ecmwf mean in weather?
The European Centre for Medium-Range Weather Forecasts (ECMWF) is an independent intergovernmental organisation supported by 35 states. ECMWF is both a research institute and a 24/7 operational service, producing and disseminating numerical weather predictions to its Member States.
What is ERA5 reanalysis?
ERA5 is the latest climate reanalysis produced by ECMWF, providing hourly data on many atmospheric, land-surface and sea-state parameters together with estimates of uncertainty.
What reanalysis means?
Definition of reanalysis
: the act or an instance of analyzing (something) again : repeated or renewed analysis Budgett said some samples from the 2012 London Olympics are also being retested now on a targeted basis ahead of the Rio Games, although most are being saved for later reanalysis. — Associated Press.
What is the difference between ERA5 and ERA5 land?
What is TerraClimate?
TerraClimate is a dataset of monthly climate and climatic water balance for global terrestrial surfaces. It uses climatically aided interpolation, combining high-spatial resolution climatological normals from the WorldClim dataset, with coarser spatial resolution, but time-varying data from CRU Ts4.
How do I get ERA5 data?
ERA5 data can be downloaded through the CDS either via the CDS web interface or programmatically using the CDS API service. Any data in the CDS catalogue can be accessed in these two ways. And since such data is kept online, access is usually fast. Some parts of the ERA5 dataset are not listed in the CDS catalogue.
What resolution is ERA5 data?
ERA5, the successor to ERA-Interim, provides global, hourly estimates of atmospheric variables, at a horizontal resolution of 31 km and 137 vertical levels from the surface to 0.01 hPa. Produced by ECMWF, ERA5 presently extends back to 1979; it will ultimately be extended back to 1950.
Which model is more accurate GFS or ECMWF?
So which model is generally speaking more accurate? Statistically speaking, the very clear answer is that the ECMWF consistently performs better than the GFS, as the model skill score graph above shows.
What is the most accurate weather model?
Global models with worldwide weather forecasts
The ECMWF is generally considered to be the most accurate global model, with the US’s GFS slightly behind.
What is the difference between analysis and reanalysis?
The analysis is a physically consistent blend of observations with a short-range forecast based on the previous analysis. Reanalyses are usually produced at lower resolution than current weather forecasts, and they use the same modern data assimilation system and forecasting model throughout the reanalysis period.
What is reanalysis in linguistics?
reanalysis (plural reanalyses) A second or subsequent analysis. (linguistics) Analyzing a lexeme with a different structure from its original, often by misunderstanding.
What is gridMET?
gridMET is a dataset of daily surface meteorological data at approximately four-kilometer resolution, covering the contiguous U.S. from 1979 to the present. These data can provide important inputs for ecological, agricultural, and hydrological models.
How do you convert ERA5 hour data to daily data?
RE: ERA5: hourly to daily values – Added by Karin Meier-Fleischer over 1 year ago
- subtract 273.15 from all values to convert the data from K to degC.
- shift the time back 1 sec to get the correct time interval for further operations.
- compute the daily mean.
Which is the most reliable weather model?
Types of Weather Models
The ECMWF is generally considered the most accurate, just slightly so, than the American system. However, they do provide access to weather predictions worldwide. The most accurate model, on average, is the European model.
Why is European model more accurate?
European model outperforms big supercomputer
That’s according to the National Hurricane Center forecast verification report. According to the Washington Post, it’s because the European model is considered computationally more powerful. That’s thanks to raw super computer power and the math behind the model.
Which model does AccuWeather use?
Our state-of-the-art microscale model downscales high-performing global and regional model data to provide accurate forecasts localized to every 1 km globally. Forecasts are generated for every minute over the next two hours and for every hour over the next 90 days.
Who is the most accurate meteorologist?
AccuWeather is Most Accurate Source of Weather Forecasts and Warnings in the World, Recognized in New Proof of Performance Results.
What is reanalysis data used for?
Reanalyzed datasets can be used to create a coherent, long-term record of past weather by compensating for the inherent biases of the different instruments used to take measurements at different points in the history of weather observation.
What is reanalysis in morphology?
Morphological reanalysis is the treatment of some set phrase as a single morpheme for purposes of stress assignment, pluralization, etc. For instance, “passer by” is semantically transparent, and theoretically composed of two morphemes.