Background information about the characteristics of this data may be found in An Introduction to Atmospheric and Oceanographic Datasets. There is general basic information in its Introduction .
More specific information may be found in these chapter(s) or section(s): Analyzed and Model Data .
80-wave triangular truncation
126-wave triangular truncation (beginning 1991mar06)
See this for the Gaussian latitudes.
See this for the grid longitudes.
daily 12-hourly 6-hourly
at 00Z, 06Z, 12Z and 18Z
Sigma layers (see this)
18 layers, 28 beginning 1993aug11
NMC Office Note 85 "Sigma File Format" in folder
More format information is here.
9MB/day, 135MB/VSN, 178MB/VSN (beginning aug 1993)
Users with NCAR computing accounts have free access from the NCAR MSS through clicking the tab in the navigation bar.
For all others, costs depend on the amount requested, and the DSS standard charging rate applies unless their order qualifies for a substantially reduced charging rate, aka "direct copy rate" as shown on the service charges page.
To send a data request to a staff member, please use this form.