Internal Atmospheric Dynamics and Tropical Indo-Pacific Climate Variability

Dynamics of changing impacts of tropical Indo-Pacific variability on Indian and Australian rainfall

A positive Indian Ocean Dipole (IOD) and a warm phase of the El Niño-Southern Oscillation (ENSO) reduce rainfall over the Indian subcontinent and southern Australia. However, since the 1980s, El Niño's influence has been decreasing, accompanied by a strengthening in the IOD's influence on southern Australia but a reversal in the IOD's influence on the Indian subcontinent. The dynamics are not f...

Dissertation : N . Pacific Late Holocene Climate Variability and Atmospheric Chemistry

Low cloud-SST feedbacks influence tropical Pacific climate variability

Tropical Pacific Variability in the NCAR Climate System Model

A 300-yr simulation with the NCAR Climate System Model (CSM), version 1, captured only ;60% of the observed ENSO signal and exaggerated the interannual variability of SST in the western tropical Pacific. Here, a simulation with a new version of the CSM, which significantly improves the spatial and temporal patterns of tropical Pacific variability, is described. Maximum SST variability is shifte...

Atmospheric Horizontal Resolution Affects Tropical Climate Variability in Coupled Models

The effect of atmospheric horizontal resolution on tropical variability is investigated within the modified Scale Interaction Experiment (SINTEX) coupled model, SINTEX-Frontier (SINTEX-F), developed jointly at Istituto Nazionale di Geofisica e Vulcanologia (INGV), L’Institut Pierre-Simon Laplace (IPSL), and the Frontier Research System. The ocean resolution is not changed as the atmospheric mod...