Recent studies with climate models have demonstrated the power of extratropical forcing in causing the intertropical convergence zone (ITCZ) to shift northward or southward, and paleoclimate data supports the notion that there have been large shifts in the ITCZ over time. It is shown that similar notions apply to slab ocean simulations of global warming. Nine slab ocean model simulations from d...

[1] The response of hurricane frequency to climate changes in an aquaplanet configuration of a 50-km resolution atmospheric general circulation model is examined. The lower boundary condition is an energetically consistent slab ocean with a prescribed cross-equatorial ocean heat flux, which breaks the hemispheric symmetry and moves the Intertropical Convergence Zone (ITCZ) off the equator. In t...

Within the context of anthropogenic warming, rainfall oscillations may induce especially important societal impacts worldwide. In this article, we propose to study potential underlying mechanisms related precipitation changes on a planetary scale by taking advantage recent theory Rossby waves long periods winding around subtropical gyres, Gyral Waves (GRWs). The stable oxygen isotopic compositi...

Abstract North Atlantic sea surface temperatures (SSTs) underwent pronounced multidecadal variability during the twentieth and early twenty-first century. We examine impacts of this Multidecadal Variability (AMV), also referred to as Oscillation (AMO), on climate in an ensemble five coupled models at both low high spatial resolution. use a SST nudging scheme specified by Coupled Model Intercomp...

Recent progress in satellite remote-sensing techniques for precipitation estimation, along with more accurate tropical rainfall measurements from the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) and precipitation radar (PR) instruments, have made it possible to monitor tropical rainfall diurnal patterns and their intensities from satellite information. One year (August 1998...

Intertropical Convergence Zone (ITCZ) primarily governs the convective rainfall potential of summer monsoon in Asia. In present study, non-parametric trend test with outgoing longwave radiation (OLR) for period last 42 years (1980–2021) have been analyzed ITCZ zone, representative zones Hadley circulation and Walker exploring deep convection activity. Besides, various climatic variables like te...

We analyse changes in terrigenous sedimentation along the northwestern Australian margin to monitor latitudinal migration of Intertropical Convergence Zone (ITCZ) and shifting boundaries climatic belts during last four glacial cycles. integrate high-resolution X-ray fluorescence (XRF) scanning elemental records from Core SO257–18548 International Ocean Discovery Program Site U1482, situated sou...

We study the signature of rainfall on S1cm, the sea surface salinity retrieved from the Soil Moisture and Ocean Salinity (SMOS) satellite mission first by comparing SMOS S1cm with ARGO sea surface salinity measured at about 5 m depth in the Intertropical Convergence Zone (ITCZ) and in the Southern Pacific Convergence Zone; second by investigating spatial variability of SMOS S1cm related to rain...

Extratropical atmospheric variability can impact tropical climate in the Pacific sector via the Pacific Meridional Modes (PMMs). The South PMM (SPMM) has a larger equatorial signature than the North PMM (NPMM) for the same amount of extratropical variability. Here we explain this interhemispheric asymmetry using an atmospheric general circulationmodel coupled to a slab ocean model. By imposing ...