What is merra reanalysis?
What is merra reanalysis?
NASA’s MERRA2 reanalysis. The Modern-Era Retrospective analysis for Research and Applications, version 2 (MERRA-2) is a global atmospheric reanalysis produced by the NASA Global Modeling and Assimilation Office (GMAO). It spans the satellite observing era from 1980 to the present.
What is merra 2 model?
MERRA-2 is the first long-term global reanalysis to assimilate space-based observations of aerosols and represent their interactions with other physical processes in the climate system. MERRA-2 includes a representation of ice sheets over (say) Greenland and Antarctica.
What is merra?
MERRA is an abbreviation for Modern Era Retrospective-Analysis for Research and Applications. The dataset originates from the Global Modeling and Assimilation Office of NASA / Goddard Space Flight Center.
What is a reanalysis dataset?
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’.
How do I download Gldas data?
Download GLDAS data: https://daac.gsfc.nasa.gov/datasets?keywords=gldas. GIOVANNI Data Viewer: https://giovanni.gsfc.nasa.gov/giovanni/ NASA LDAS Program: https://ldas.gsfc.nasa.gov/gldas/ NASA LIS (Land Information System): https://lis.gsfc.nasa.gov/
How do I get data from ERA5?
Go to the C3S climate data store (CDS). Type ‘ERA5’ in the search box. Follow the ERA5 dataset title link of interest (there will be many more hits)….3 – Downloading online ERA5 family data through the CDS web interface
- Overview .
- Documentation .
- Download data .
What is reanalysis data used for?
Reanalysis data are being used by a wide range of applications: monitoring climate change, research, education, policy-making and business, in sectors such as renewable energy and agriculture. ERA5 is a very popular dataset among users of the C3S Climate Data Store.
What is Gldas data?
The goal of the Global Land Data Assimilation System (GLDAS) is to ingest satellite- and ground-based observational data products, using advanced land surface modeling and data assimilation techniques, in order to generate optimal fields of land surface states and fluxes.
What is TRMM data?
The Tropical Rainfall Measuring Mission (TRMM) is a joint space mission between NASA and Japan’s National Space Development Agency designed to monitor and study tropical and subtropical precipitation and the associated release of energy.
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 ).
What is the 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 is data re analysis in research?
The aims of UEP’s Data re-analysis work is: to distil findings about pattern of participation in informal and everyday practices from existing surveys and datasets. to refresh, develop and refine survey approaches to collecting and analysing participation data.
What is the purpose of merra 2 reanalysis?
MERRA-2 is the first long-term global reanalysis to assimilate space-based observations of aerosols and represent their interactions with other physical processes in the climate system. MERRA-2 includes a representation of ice sheets over (say) Greenland and Antarctica.
Which is the latest version of merra 2?
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2) is the latest atmospheric reanalysis of the modern satellite era produced by NASA’s Global Modeling and Assimilation Office (GMAO).
Why is MERRA-2 important to the Earth system?
Along with the enhancements in the meteorological assimilation, MERRA-2 takes some significant steps towards GMAO’s target of an Earth System reanalysis. MERRA-2 is the first long-term global reanalysis to assimilate space-based observations of aerosols and represent their interactions with other physical processes in the climate system.
What is the spatial resolution of merra 2?
Additional advances in both the GEOS model and the GSI assimilation system are included in MERRA-2. Spatial resolution remains about the same (about 50 km in the latitudinal direction) as in MERRA.
