On the need for perturbed LBCs in limited-area ensemble forecasts

Paul Nutter, Ming Xue, David Jonathan Stensrud

Research output: Contribution to journalArticlepeer-review


A method for introducing lateral boundary conditions (LBC) perturbations that is designed specifically to help restore the loss of limited area model (LAM) ensemble forecast was studied. The LBC perturbations were designed to amplify with time while coherently propagating into the domain. Temporal interpolation of coarsely resolved external LBC fields has been shown to remove small-scale features from LAM solutions. The additional expense of applying LBC perturbations may be offset by the ability to integrate LAM ensembles over smaller domains.

Original languageEnglish (US)
Pages (from-to)2313-2328
Number of pages16
JournalBulletin of the American Meteorological Society
StatePublished - 2004

All Science Journal Classification (ASJC) codes

  • Atmospheric Science


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