Last day available May 20, 2018
|Plot either the EP Flux averaged from daily data over N days until the date you select. Data is taken from the NCEP/NCAR Reanalysis which begins Jan 1 1948.|
Quasi-geostrophic Eliassen Palm flux on the sphere are computed from daily-averaged values of wind and temperature taken from the NCAR/NCEP Reanalysis hosted at ESRL/PSD. The EP-Flux vectors have been scaled for display purposes. Contours show the value of EP Flux divergence. Areas of EP-Flux convergence, and hence of westerly deceleration shown by solid lines. Note that vectors above 100mb will be multiplied by a scale factor which you can change.
- EP Fluxes were generated courtesy of code written by Joe Barsugli.
- Code to calculate and plot the EP Flux data was written in NCL: NCAR's command language which is made freely available.. You may download our EP Flux code
- Documentation describing EP Flux available in PDF and DOC.