Member Since 2008
HAOJIA Abby Ren
Professor, National Taiwan University
AGU Research
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Upper Ocean Instability in the Subpolar North Atlantic and Its Implications for Deep Water Formation During Interglacials
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
06 february 2025
Benoit Thibodeau, John Doherty, Montserrat Alonso-...
In this multiproxy study, we used new isotopic data on planktonic foraminifera to highlight the strong instability that characterized surface condi...
Reshaping of New Nitrogen Regime by Anticyclonic Eddies in the Northern South China Sea
JOURNAL OF GEOPHYSICAL RESEARCH: OCEANS
26 january 2025
Juan Tian, Yue Zhang, Hongmei Jing, Haojia A. Ren,...
Mesoscale anticyclonic eddies (ACEs) act as an important physical disturbance for marine biogeochemical cycle, but our knowledge of the dynamics of...
Sea level change and nitrogen fixation dynamics in the Atlantic over glacial cycles
BIOGEOCHEMICAL CYCLES OF CARBON, OXYGEN, NITROGEN, PHOSPHORUS, SULFUR, AND SILICON IN CONTEMPORARY EARTH SYSTEMS II POSTER
biogeosciences | 13 december 2024
Alexandra Auderset, Francois Fripiat, Roger Creel,...
Low-latitude nitrogen fixation (N2 fixation) is essential for providing bioavailable nitrogen to the global ocean. Previous studies using foraminifera...
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Development of OMZs in the East Tropical Pacific during the mid-late Miocene due to the CAS shoaling
MIOCENE CLIMATE DYNAMICS II ORAL
paleoceanography and paleoclimatology | 12 december 2024
Yan Zhang, Haojia A. Ren, Ana C. Ravelo, Wen-Hui C...
While the effects of Central American Seaway (CAS) closure on ocean circulation during the Miocene have been widely discussed in the literature, their...
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Species-specific foraminifera-bound nitrogen isotopes as a proxy for symbiosis in fossil foraminifera: A case study using South Atlantic sediments
ADVANCES IN UNDERSTANDING “MICROPROXY” RESPONSES TO CLIMATE CHANGE IN ANCIENT AND MODERN OCEANS II POSTER
paleoceanography and paleoclimatology | 12 december 2024
Alexandra Auderset, Sandi Smart, Yeongjun Ryu, dar...
Foraminifera engage in symbiotic relationships with photosynthetic algae, providing inorganic nutrients and a host environment in exchange for receivi...
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Increasing marine nitrogen fixation stabilized the ocean’s nitrogen-to-phosphorus ratio over the past six million years
INTEGRATING PROXY AND MODEL APPROACHES TO PALEOCLIMATE STUDIES IN THE CENOZOIC I POSTER
paleoceanography and paleoclimatology | 11 december 2024
Tianshu Kong, Haojia A. Ren, Ruixiang Zhai, Daniel...
In 1934, Redfield observed that the concentration ratio of dissolved nitrate to phosphate (N:P ratio) in the ocean matches the average ratio of nitrog...
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Sea Level Modulation of Atlantic Nitrogen Fixation Over Glacial Cycles
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
09 august 2024
Alexandra Auderset, François Fripiat, Roger Creel,...
N2 fixation in low‐latitude surface waters dominates the input of fixed nitrogen (N) to the global ocean, sustaining ocean fertility. In the ...
Millennial‐Scale Carbon Flux Variability in the Subantarctic Pacific During Marine Isotope Stage 3 (57–29 ka)
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
21 march 2024
Harris Anderson, Zanna Chase, Helen C. Bostock, Ta...
Antarctic ice cores reveal a glacial climate state during Marine Isotope Stage 3 (MIS‐3; 57–29 ka) punctuated by millennial‐...