edu.ucar.opensky::technotes:140 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T16:51:47.135809 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7kw5ffg Global Analyses From ECMWF and Atlas of 1000 to 10 Mb Circulation Statistics 1992-01-01T00:00:00Z publication https://n2t.org/ark:/85065/d7kw5ffg https://doi.org/10.5065/D6WM1BCN Trenberth, K. author UCAR/NCAR - Library publisher This report describes the European Centre for Medium Range Weather Forecasts (ECMWF) global analyses available to NCAR. Several data sets are available with differing characteristics and varying resolutions in both time and space. We assess the internal consistency and accuracy of the ECMWF analyses, document all of the problems we are aware of, describe the analysis system changes and the impacts on the analyses, and determine the usefulness of the ECMWF analyses for climate studies. The purpose of this project is to establish the climate record from global analyses. This record may be used in diagnostic studies of the atmosphere, to compile climatologies which may then be used, among other things, to validate the Community Climate Model, and for examining anomalies such as occur in association with El Nino-Southern Oscillation events. This Technical Note supersedes NCAR Tech. Note 300 which described and evaluated one such data set, that from the World Meteorological Organization (WMO) archive. It also presented an eight-year climatology of the circulation statistics for 1000 to 100 mb from that data set. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Upper level winds Geopotential height Relative humidity Upper air temperature Weather research/forecast models theme U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2021-09-17 revision 11.2 NASA Global Change Master Directory originator Valids List: Science and Services Keywords Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation