Abstract
Abstract Gridded fields of TOPEX/Poseidon sea level height (SLH) and National Centers for Environmental Prediction sea surface temperature (SST) and meridional surface wind (MSW) anomalies are constructed monthly on a 2° grid over the Pacific Ocean for nearly 6 years from 1993 to 1998. Time–longitude diagrams of monthly SLH, SST, and MSW anomalies from 10° to 22° lat yield significant peak spectral energy density in zonal wavenumber-frequency spectra for periods of 1–2 yr near the free Rossby wave dispersion curve. Subsequently, temporal and spatial filtering of these SLH, SST, and MSW anomalies finds them propagating westward over the interior tropical Pacific Ocean in fixed phase with one another. Significant squared coherence exists between filtered SLH and SST (SST and MSW) anomalies over the entire latitude band, yielding significant phase differences ranging over 90° ± 45° (−70° ± 45°) at 10°S and 14° lat and ranging over 90° ± 45° (0° ± 45°) at 18° and 22° lat. Over the entire latitude domain warm ...
Published Version
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