The Intertropical Convergence Zone (ITCZ) is manifested as a circum-global atmospheric belt of intense, moist convection and rainfall, marking the confluence of the northern and southern trades and the rising branch of the Hadley cell. It regulates the hydrologic cycle over the tropical continents and interacts tightly with the tropical oceans, notably with the seasonal appearance of the equato...

We synthesize African paleoclimate from 150 to 30 ka (thousand years ago) using 85 diverse datasets at a regional scale, testing for coherence with North Atlantic glacial/interglacial phases and northern and southern hemisphere insolation cycles. Two major determinants of circum-African climate variability over this time period are supported by principal components analysis: North Atlantic sea ...

We examine the spatiotemporal variability of the upper ocean-sea ice system of the Atlantic sector of the Southern Ocean subpolar seas (Weddell gyre), and the nature of its covariability with extrapolar climate, identifying teleconnections and their mechanisms. To systematically evaluate the sporadic and sparse distribution of subpolar data we employed an optimal analysis involving Empirical Or...

A total of 205 COI sequences and 310 cyt b the threespine stickleback (Gasterosteus aculeatus) from basins all seas throughout vast range this species were analyzed. Median networks haplotypes constructed in study, combined with results reconstruction paleogeographic conditions, led to conclusion that emerged as a Pacific Ocean basin spread Europe south, populating system water bodies existed O...

Lisbon is a European Mediterranean city, greatly exposed to heatwaves (HW), according recent trends and climate change prospects. Considering the Atlantic influence, air temperature observations from Lisbon’s mesoscale network are used investigate interactions between background weather urban thermal signal (UTS) in summer. Days classified prevailing regional wind direction, hourly UTS compared...

The mechanisms affecting the path of the depth-integrated North Atlantic western boundary current and the formation of the northern recirculation gyre are investigated using a hierarchy of models, namely, a robust diagnostic model, a prognostic model using a global 1° ocean general circulation model coupled to a two-dimensional atmospheric energy balance model with a hydrological cycle, a simpl...

A detailed reconstruction of West African monsoon hydrology over the past 155,000 years suggests a close linkage to northern high-latitude climate oscillations. Ba/Ca ratio and oxygen isotope composition of planktonic foraminifera in a marine sediment core from the Gulf of Guinea, in the eastern equatorial Atlantic (EEA), reveal centennial-scale variations of riverine freshwater input that are ...

Fifteen fish species, totalling 149 specimens, were cytochrome c oxidase I sequenced— barcoded—from Northern (Atlantic and Mediterranean) and Southern (Australasian) Hemisphere waters. Thirteen species showed no significant evidence of spatial genetic differentiation for this gene, although small sample sizes reduced statistical power. For marine fish, barcodes collected in one part of a specie...