21st Conference on Weather Analysis and Forecasting/17th Conference on Numerical Weather Prediction


Spurious pressure and geopotential height fluctuations in the North American Regional Reanalysis

Gregory L. West, NOAA/CIRP, Salt Lake City, UT; and J. Steenburgh

Analyses by the North American Regional Reanalysis (NARR) occasionally exhibit spurious and physically unrealistic fluctuations in geopotential height, surface pressure, and sea level pressure. The fluctuations are not evident in surface observations, typically extend through a greater part of the troposphere, and are not necessarily accompanied by dynamically consistent thermodynamic and kinematic changes. Our poster will present examples of the fluctuations, illustrate their frequency of occurrence, and provide explanations as to their causes.

Poster Session 1, Conference Posters
Monday, 1 August 2005, 5:30 PM-7:00 PM, Regency Ballroom

Previous paper  Next paper

Browse or search entire meeting

AMS Home Page