What is reanalysis in climate?

What is reanalysis in climate?

What is climate reanalysis? A climate reanalysis gives a numerical description of the recent climate, produced by combining models with observations. Climate reanalyses generate large datasets that can take up several petabytes of space, and are best processed with cloud-based tools, to avoid large download volumes.

What is reanalysis datasets?

Reanalysis data provide the most complete picture currently possible of past weather and climate. They are a blend of observations with past short-range weather forecasts rerun with modern weather forecasting models. They are globally complete and consistent in time and are sometimes referred to as ‘maps without gaps’.

What are reanalysis products?

Reanalysis products are used extensively in climate research and services, including for monitoring and comparing current climate conditions with those of the past, identifying the causes of climate variations and change, and preparing climate predictions. …

What is Ecmwf ERA5?

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.

What does Reanalyse mean?

transitive verb. : to again ascertain or study the parts of (something) : to analyze (something) again But if no significant differences were found, the data could be reanalyzed according to longer or shorter time intervals until a significant difference was found.

How does the ECMWF model work?

ECMWF supports research on climate variability using an approach known as reanalysis. This involves feeding weather observations collected over decades into a NWP system to recreate past atmospheric, sea- and land-surface conditions over specific time periods to obtain a clearer picture of how the climate has changed.

What is the meaning 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 does Ecmwf stand for?

European Centre for Medium-Range Weather Forecasts
The European Centre for Medium-Range Weather Forecasts (ECMWF) is an independent intergovernmental organisation supported by 34 states. ECMWF is both a research institute and a 24/7 operational service, producing and disseminating numerical weather predictions to its Member States.

What does ERA5 mean?

ECMWF Reanalysis 5th Generation
Acronym ERA5 Name ECMWF Reanalysis 5th Generation Description. ERA5 is the fifth generation of ECMWF atmospheric reanalyses of the global climate (http://climate.copernicus.eu/products/climate-reanalysis ).

Is reanalysis a word?

Reanalysis meaning (linguistics) Analyzing a lexeme with a different structure from its original, often by misunderstanding. For example, hamburger, which is originally Hamburg + -er, was reanalyzed as ham + -burger, which produced words like cheeseburger. A second or subsequent analysis.

Is there a word analyzation?

Usage of Analyzation Although the word analyzation has existed since the 18th century and is regularly formed from the verb analyze, it is much more rarely used than its more familiar synonym analysis.

Is ECMWF better than GFS?

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.

Is the ECMWF a real time reanalysis?

ECMWF Reanalysis – Interim (ERA-Interim) ◀ View Datasets search ERA-Interim is a global atmospheric reanalysis from 1979, continuously updated in real time. The data products include a variety of surface parameters, describing weather as well as ocean-wave and land-surface conditions.

When was the last ECMWF reanalysis of the atmosphere?

ERA-40 is an ECMWF re-analysis of the global atmosphere and surface conditions for 45-years, over the period from September 1957 through August 2002. More details…

Which is the latest version of the ECMWF?

The latest ECMWF reanalysis is ERA5, which is being produced by C3S. ERA5 provides a snapshot of the atmosphere, land surface and ocean waves for each hour from 1979 onwards (for 1950 to 1978 a preliminary version is available).

What kind of research is done at ECMWF?

Current research at ECMWF focuses on the development of consistent reanalyses of the coupled climate system, including atmosphere, land surface, ocean, sea ice, and the carbon cycle, extending back as far as a century or more. An additional research topic is directed towards an improved handling of systematic model bias.