Mechanisms of multiyear variations of Northern Australia wet-season rainfall.

ABSTRACT: Northern Australia wet season (November-April) rainfall exhibits strong variability on multiyear timescales. In order to reveal the underlying mechanisms of this variability, we investigate observational records for the period 1900-2017. At multiyear timescales, the rainfall varies coherently across north-western Australia (NW) and north-eastern Australia (NE), but the variability in these two regions is largely independent. The variability in the NE appears to be primarily controlled by the remote influence of low frequency variations of El Niño-Southern Oscillation (ENSO). In contrast, multiyear variations in the NW appear to be largely driven locally and stem from a combination of rainfall-wind-evaporation feedback, whereby enhanced land-based rainfall is associated with westerly wind a

SUBMITTER: Sharmila S 

PROVIDER: S-EPMC7083836 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature