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Accuracy of the isentropic trajectories calculated for the EASOE Campaign
Author(s) -
Knudsen B. M.,
Carver G. D.
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/93gl02437
Subject(s) - isentropic process , interpolation (computer graphics) , trajectory , geodesy , polar , meteorology , vortex , mathematics , physics , geology , classical mechanics , motion (physics) , mechanics , astronomy
During EASOE 10 day backward trajectories ending on most measurement sites were calculated on 6 isentropic levels every day. The temporal and spatial coarseness of the ECMWF analyses used cause significant errors in the trajectories. These interpolation errors are largest in the direction along the trajectories. The difference between two trajectories of the Polar Vortex Balloon Experiment and calculated trajectories is 8 and 12% of the trajectory length after 1.83 and 2.14 days. This discrepancy is not explainable by interpolation errors alone.