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RISA Method to Find Perturbations That Trigger Blocking Onset: Conditional Nonlinear Optimal Perturbations
Publisher: American Meteorological Society
Abstract: In this paper the following question is addressed: assuming that some information is available about initial perturbations (e.g., that they belong to an ensemble, which consists of the perturbations whose magnitudes are ...
Similarities between Optimal Precursors that Trigger the Onset of Blocking Events and Optimally Growing Initial Errors in Onset Prediction
Publisher: American Meteorological Society
Abstract: triangular T21, three-level, quasigeostrophic global spectral model was used to investigate how precursors relate to the predictability of blocking onset when a conditional nonlinear optimal perturbation approach is used. ...
Relationships between Optimal Precursors Triggering NAO Onset and Optimally Growing Initial Errors during NAO Prediction
Publisher: American Meteorological Society
Abstract: ased on a viewpoint that the North Atlantic Oscillation (NAO) is a nonlinear initial-value problem, the predictability of NAO event onset is studied through investigation of the relationship between the optimal precursor ...
A Study of the North Atlantic Oscillation Using Conditional Nonlinear Optimal Perturbation
Publisher: American Meteorological Society
Abstract: he conditional nonlinear optimal perturbation (CNOP) method is used to explore the optimal precursors that trigger the North Atlantic Oscillation (NAO) anomaly pattern with a triangular T21, three-level, quasi-geostrophic ...
Diurnal Variations of Presummer Rainfall over Southern China
Publisher: American Meteorological Society
Abstract: n this study, the presummer diurnal cycle of rainfall (DCR) over southern China is examined using the merged 0.1°-resolution gridded hourly rain gauge and satellite rainfall dataset and the National Centers for Environmental ...