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ECMWF Joint Observing System Simulation Experiment (OSSE) Nature Run

A broad group of US and international partners organized and agreed to have ECMWF compute a high resolution global gridded dataset that serves as a reference dataset for general and collaborative observing system simulation experiments (OSSE). This model output is termed "Nature Run", because it is intended to be a best representation possible of the true environmental conditions. The temporal and spatial resolution are sufficient so the data may be used as an experimental samples and validation data for planning future observing systems. It is especially valuable for assessing future satellite systems.


PERIODS: 2005-05-01 00:00 +0000 to 2006-06-01 00:00 +0000 (Entire dataset)
Period details by subset
USAGE:

This data must not be used for commercial purposes and re-distribution rights are not given. ECMWF and Joint OSSEs must be given credit in any publications in which this data is used. NCAR will track users and informed to ECMWF and Joint OSSE. If you are interested in using the data set it is necessary to send E-mail with the statement below, and your name and affiliation to to Michiko Masutani (michiko.masutani@noaa.gov). Your name will be added to the user list and sent to ECMWF.

"I agree not to copy the ECMWF data or software provided by NCAR for the use of other persons, and I agree not to use these data and/or software for commercial purposes. ECMWF will be given credit in any publications in which these data and/or software are used. I understand that if other persons in my organization wish to use these data and/or software, they must also sign a copy of this agreement. "

VARIABLES:
Air TemperatureCloud Amount/FrequencyCloud Liquid Water/IceConvergence/Divergence
Dew Point TemperatureGeopotential HeightHumidityHydrostatic Pressure
Precipitation AmountSea Level PressureSkin TemperatureSnow Depth
StreamfunctionsSurface Air TemperatureSurface PressureSurface Winds
Tropospheric OzoneUpper Level WindsVertical Wind MotionVorticity

GRIB parameter table
LEVELS: See the detailed metadata for level information
TYPES: Grid
COVERAGE: Longitude Range: Westernmost=0E Easternmost=180E
Latitude Range: Southernmost=90S Northernmost=90N
Detailed coverage information
SOURCES: DOC/NOAA/NWS/NCEP/EMC
Environmental Modeling Center, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
ECMWF
European Centre for Medium-Range Weather Forecasts
RELATED SITES: List of references
Progress and Meeting Notes
NASA OSSE Home Page
THORPEX OSSE Home Page
PUBLICATIONS: Matsutani et al., 2007: Progress in Joint OSSEs. A new nature run and international collaboration. Proceedings of the 18th Conference on Numerical Weather Prediction, Amer. Meteor. Soc., Salt Lake City, UT.

Recommended acknowledgement for this dataset:
"The data for this study are from the Research Data Archive (RDA) which is maintained by the Computational and Information Systems Laboratory (CISL) at the National Center for Atmospheric Research (NCAR). NCAR is sponsored by the National Science Foundation (NSF). The original data are available from the RDA (http://dss.ucar.edu) in dataset number ds621.0."
VOLUME: 108.77 GBytes (Entire dataset)
Volume details by subset
DATA FORMATS: WMO GRIB1
MORE DETAILS: View more details for this dataset, including dataset citation, data contributors, and other detailed metadata
CONTACT: For assistance with this dataset, please contact Chi-Fan Shih (303-497-1833) . If the specialist is unavailable, please contact Data Help.
DATA ACCESS: Click the tab here or in the navigation bar at the top of the page.
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