Abstract:
The ECMWF Re-Analysis (ERA40) is a global atmospheric analysis of many conventional observations and satellite data streams for the period Sept,1957- Aug,2002. There are numerous data products that are separated into dataset series based on resolution, vertical coordinate reference, and likely research applications. Descriptions of the ... series organization and direct links to information about all ERA40 products are available [http://rda.ucar.edu/cgi-bin/joey/era40sum.pl?ds=ds118.0]. This dataset contains monthly means for 73 surface and single level variables from the forecast cycle of the ERA40 model. Means are available for the 3 and 6 hour forecasts for each synoptic hour (00, 06, 12 and 18 UTC) as well as a diurnal mean for the 6 hour forecast. All data has been archived on the reduced N80 Gaussian grid. Monthly means have been computed for each analysis hour as well as a diurnal mean. The ERA-Interim data from ECMWF is an update to the ERA-40 project. The ERA-Interim data starts in 1989 and has a higher horizontal resolution (T255, N128 nominally 0.703125 degrees) than the ERA-40 data (T159, N80 nominally 1.125 degrees). ERA-Interim is based on a more current model than ERA-40 and uses 4-D VAR (as apposed to 3-D VAR in ERA-40). ECMWF will continue to run the ERA-Interim model in near real time thru at least 2010, and possibly longer. This data is available in ds627.0 [http://rda.ucar.edu/datasets/ds627.0].
Dataset Originator/Creator:
UCAR/NCAR/CISL/DSS > Data Support Section, Computational and Information Systems Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research
Dataset Title:
ERA40 Monthly Mean Model Resolution Gridded Surface and Single Level Forecast Fields from ECMWF
Dataset Publisher:
UCAR/NCAR/CISL/DSS > Data Support Section, Computational and Information Systems Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research
Latitude Resolution:
1.125 degrees
Longitude Resolution:
1.121 degrees
Horizontal Resolution Range:
100 km - < 250 km or approximately 1 degree - < 2.5 degrees
NASA Langley Atmospheric Science Data Center
User and Data Services
NASA Langley Research Center
Mail Stop 157D
City:
Hampton
Province or State:
VA
Postal Code:
23681-2199
Country:
USA
Publications/References
G. S. Kent, M. P. McCormick and the SAGE III Cloud ATBD Team, SAGE III Algorithm Theoretical Basis Document (ATBD) Cloud Presence Data Products. SAGE III Project, November 15, 1997
