Influence of the Coupling South Atlantic Convergence Zone-El Niño-Southern Oscillation (SACZ-ENSO) on the Projected Precipitation Changes over the Central Andes

There are no studies related to the influence of coupling between South Atlantic Convergence Zone (SACZ) and El Niño-Southern Oscillation (ENSO) pattern variability on future changes in austral summer (December-February, DJF) precipitation over central Andes. Therefore, we evaluated historical simulations (1980–2005) projections (2070–2099) for Representative Concentration Pathway 8.5 (RCP 8.5) scenario 25 global climate models (GCMs) from Coupled Model Intercomparison Project phase 5 (CMIP5). Moreover, also consider Regional Climate version 4 (RegCM4) nested three CMIP5 GCMs (GFDL-ESM2M, MPI-ESM-MR, HadGEM2-ES) under RCP 8.5. We separate according their abilities simulate nonlinear characteristics ENSO SACZ period. found that only out (hereafter group A) during Although most GCM project DJF decreases Andes, A increases projected increase deep convection Peruvian Amazon. On regional scale, RegGFDL (nested a GCM) projects statistically significant (~5–15%) northern Andes Conversely, all RegCM4 decrease (~?10%) southern