The Southern Ocean during the ice ages: A review of the Antarctic surface isolation hypothesis, with comparison to the North Pacific
Abstract The Southern Ocean is widely recognized as a potential cause of the lower
atmospheric concentration of CO 2 during ice ages, but the mechanism is debated. Focusing …
atmospheric concentration of CO 2 during ice ages, but the mechanism is debated. Focusing …
Rapid expansion of northern peatlands and doubled estimate of carbon storage
JE Nichols, DM Peteet - Nature Geoscience, 2019 - nature.com
Northern peatlands are an integral part of the global carbon cycle—a strong sink of
atmospheric carbon dioxide and source of methane. Increasing anthropogenic carbon …
atmospheric carbon dioxide and source of methane. Increasing anthropogenic carbon …
Insights from fossil-bound nitrogen isotopes in diatoms, foraminifera, and corals
Nitrogen is a major limiting element for biological productivity, and thus understanding past
variations in nitrogen cycling is central to understanding past and future ocean …
variations in nitrogen cycling is central to understanding past and future ocean …
Southern Ocean upwelling, Earth's obliquity, and glacial-interglacial atmospheric CO2 change
Previous studies have suggested that during the late Pleistocene ice ages, surface-deep
exchange was somehow weakened in the Southern Ocean's Antarctic Zone, which reduced …
exchange was somehow weakened in the Southern Ocean's Antarctic Zone, which reduced …
CO2 storage and release in the deep Southern Ocean on millennial to centennial timescales
The cause of changes in atmospheric carbon dioxide (CO2) during the recent ice ages is yet
to be fully explained. Most mechanisms for glacial–interglacial CO2 change have centred on …
to be fully explained. Most mechanisms for glacial–interglacial CO2 change have centred on …
Radiocarbon evidence for the stability of polar ocean overturning during the Holocene
Proxy-based studies have linked the pre-industrial atmospheric p CO 2 rise of∼ 20 ppmv in
the mid-to late Holocene to an inferred increase in the Southern Ocean overturning and …
the mid-to late Holocene to an inferred increase in the Southern Ocean overturning and …
Air-sea disequilibrium enhances ocean carbon storage during glacial periods
S Khatiwala, A Schmittner, J Muglia - Science advances, 2019 - science.org
The prevailing hypothesis for lower atmospheric carbon dioxide (CO2) concentrations
during glacial periods is an increased efficiency of the ocean's biological pump. However …
during glacial periods is an increased efficiency of the ocean's biological pump. However …
238U, 235U and 234U in seawater and deep-sea corals: A high-precision reappraisal
Uranium isotope ratios are widely utilized in paleoceanography. The 238 U/235 U ratio
(expressed as δ 238 U) is leveraged as a proxy for the areal extent of anoxic seafloor, and …
(expressed as δ 238 U) is leveraged as a proxy for the areal extent of anoxic seafloor, and …
The residence time of Southern Ocean surface waters and the 100,000-year ice age cycle
AP Hasenfratz, SL Jaccard, A Martínez-García… - Science, 2019 - science.org
From 1.25 million to 700,000 years ago, the ice age cycle deepened and lengthened from
41,000-to 100,000-year periodicity, a transition that remains unexplained. Using surface-and …
41,000-to 100,000-year periodicity, a transition that remains unexplained. Using surface-and …
Increased tropical South Pacific western boundary current transport over the past century
WH Chen, H Ren, JCH Chiang, YL Wang… - Nature …, 2023 - nature.com
The wind-driven meridional overturning circulation between the tropical and subtropical
oceans is important for regulating decadal-scale temperature fluctuations in the Pacific …
oceans is important for regulating decadal-scale temperature fluctuations in the Pacific …