[HTML][HTML] The Southern Ocean during the ice ages: A review of the Antarctic surface isolation hypothesis, with comparison to the North Pacific

DM Sigman, F Fripiat, AS Studer, PC Kemeny… - Quaternary Science …, 2021 - Elsevier
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 …

[HTML][HTML] Delivering sustained, coordinated, and integrated observations of the Southern Ocean for global impact

L Newman, P Heil, R Trebilco, K Katsumata… - Frontiers in Marine …, 2019 - frontiersin.org
The Southern Ocean is disproportionately important in its effect on the Earth system,
impacting climatic, biogeochemical, and ecological systems, which makes recent observed …

Southern Ocean upwelling, Earth's obliquity, and glacial-interglacial atmospheric CO2 change

XE Ai, AS Studer, DM Sigman, A Martínez-García… - Science, 2020 - science.org
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 …

The nitrogen isotopic composition of tissue and shell‐bound organic matter of planktic foraminifera in Southern Ocean surface waters

SM Smart, SE Fawcett, H Ren… - Geochemistry …, 2020 - Wiley Online Library
We present the first nitrogen isotope (δ15N) measurements of planktic foraminifera,
paleoceanographically important zooplankton, from the nutrient‐rich waters of the modern …

The seasonal cycle of nitrogen uptake and nitrification in the Atlantic sector of the Southern Ocean

M Mdutyana, SJ Thomalla, R Philibert… - Global …, 2020 - Wiley Online Library
Net primary production (NPP) fueled by nitrate is often equated with carbon export, providing
a metric for CO2 removal to the deep ocean. This “new production paradigm” assumes that …

Ice age‐Holocene similarity of foraminifera‐bound nitrogen isotope ratios in the eastern equatorial Pacific

AS Studer, F Mekik, H Ren, MP Hain… - Paleoceanography …, 2021 - Wiley Online Library
Bulk sediment δ15N records from the eastern tropical Pacific (ETP) extending back to the
last ice age most often show low glacial δ15N, then a deglacial δ15N maximum, followed by …

Assessment of C, N, and Si isotopes as tracers of past ocean nutrient and carbon cycling

JR Farmer, JE Hertzberg, D Cardinal, S Fietz, K Hendry… - 2021 - Wiley Online Library
Biological productivity in the ocean directly influences the partitioning of carbon between the
atmosphere and ocean interior. Through this carbon cycle feedback, changing ocean …

The Impact of Incomplete Nutrient Consumption in the Southern Ocean on Global Mean Ocean Nitrate δ15N

F Fripiat, DM Sigman, A Martínez‐García… - Global …, 2023 - Wiley Online Library
It is understood that the global mean ocean nitrate δ15N is set by the δ15N of the input of
fixed nitrogen (N) to the ocean (mostly N2 fixation) and the net isotopic discrimination of …

Proxy‐Based Preformed Phosphate Estimates Point to Increased Biological Pump Efficiency as Primary Cause of Last Glacial Maximum CO2 Drawdown

TD Vollmer, T Ito… - Paleoceanography and …, 2022 - Wiley Online Library
Upwelling deep waters in the Southern Ocean release biologically sequestered carbon into
the atmosphere, contributing to the relatively high atmospheric CO2 levels during …

南极罗斯海末次冰盛期以来的古生产力变迁

龙飞江, 向波, 王逸卓, 张泳聪, 胡良明, 孙曦… - 海洋地质与第四纪 …, 2024 - jhydz.com.cn
研究罗斯海古生产力的目的在于揭示南极地区过去的气候变化和生态系统演变,
为预测未来气候变化影响和提高气候模型准确性提供关键信息. 通过对南极罗斯海ANT32 …