Laura C Peterson

TL;DR: A period of continental aridification and ecosystem change occurred about seven million years ago and a global sea surface temperature reconstruction identifies cooling temperatures and a strengthened meridional temperature gradient at this time.

TL;DR: Alkenone-based tropical SST records from the major ocean basins show coherent glacial-interglacial temperature changes of 1° to 3°C that align with (but slightly lead) global changes in ice volume and deep ocean temperature over the past 3.5 million years, interpreted to reflect “top-down” forcing through the atmosphere.

TL;DR: This paper used records from the Atlantic and Pacific oceans, including a new alkenone palaeotemperature record from the South Pacific, to reconstruct changes in zonal and meridional sea surface temperature gradients since the Pliocene, and assess their connection using a comprehensive climate model.

TL;DR: In this article, a U 37 K −derived sea surface temperature (SST) reconstruction spanning 13 to 6 Ma from uplifted hemipelagic sediments in Northern Italy provides the first continuous mid-latitude temperature record with which to compare the evolution of aridity and biotic events at similar latitudes in Northern Africa and Pakistan.

TL;DR: A composite time series of Mediterranean sea surface temperature (SST) and marine biomarker accumulation for the time span from 3.5 to 1.525 Ma, based on alkenone unsaturation and concentration from hemipelagic sediments outcropping in southern Italy and Sicily was presented in this paper.