Datasets and variables
Background Information
Referencing Plots
Related Plot/Analysis
Plot daily composites
Plot monthly correlations
Plot NCEP operational data
NCEP Reanalysis Atlas
PSD's Complete NCEP Reanalysis Page
Feedback (good, bad, suggested enhancements) is always welcome! Mail to Cathy Smith at ( If you find this page useful for teaching or research, I would especially like to know.

6-Hourly NCEP/NCAR Reanalysis Data Composites

Plot maps or composites of variables from the NCEP/NCAR Reanalysis dataset. Data is available from Jan 1948 to Mar 14, 2018 for most variables

Some variables are not updated as frequently.

Variables Analysis level?
Enter Year, Month and Day and Hour(0,6,12,18z) for composites
For example, 1999 1 1 18 (Don't type in the z). To subtract one set of days from another, use a minus sign (-) before the years of the days that are to be subtracted. Default is last available date for variable.
OR to Enter Year of last day of range
OR File with Dates Optional Plot Label replaces list of dates.
Filename: Plot Label:
Hours to add or subtract:
This number of days will be added (or subtracted) from all input dates. Please use all positive dates for input.
Color? Shading Type
Plot type? MeanAnomaly
Scale Plot Size(%) Plot contour labels?No Yes
Vector Winds: Plot every nth arrow in x and y (default 2)
Override default contour interval ? Interval: Range: lowhigh Scale vectors
Region of globe
Enter lowest lat (-90 to 90) Highest lat
Enter western most longitude (0 to 360) Eastern most longitude
Choose projection for CUSTOM:
Choose height range for CROSSECTION: to

error submittal form (Report Bugs)
This is a Research and Development Application