Member Since 1999
Andy Ridgwell
Professor of Earth System Science, University of California Riverside
AGU Research
Search
Filters
Clear All
Earth System Model Analysis of How Astronomical Forcing Is Imprinted Onto the Marine Geological Record: The Role of the Inorganic (Carbonate) Carbon Cycle and Feedbacks
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
04 march 2024
Pam Vervoort, Sandra Kirtland Turner, Fiona Rochho...
Astronomical cycles are strongly expressed in marine geological records, providing important insights into Earth system dynamics and an invaluable ...
Sensitivity of Ocean Circulation to Warming During the Early Eocene ‘Greenhouse’
ADVANCES IN UNDERSTANDING GLOBAL MERIDIONAL OVERTURNING CIRCULATION FROM PAST TO FUTURE: INSIGHTS FROM MULTIPLE APPROACHES III ORAL
ocean sciences | 14 december 2023
Sandra Kirtland Turner, Andy Ridgwell, Allison L. ...
Multiple abrupt warming events (hyperthermals) punctuated the Early Eocene and were associated with deep-sea temperature increases of 2 to 4°C, seaflo...
View Abstract
Challenges in reconstructing past ocean oxygenation
OXYGENATION DYNAMICS IN PAST CHANGING OCEANS II ORAL
paleoceanography and paleoclimatology | 13 december 2023
Andy Ridgwell, Alexander Pohl, Paul J. Valdes, Key...
Changes through geologic time in the availability of dissolved oxygen in the ocean is traditionally considered to be controlled by variations in the o...
View Abstract
Reconstruction of carbon cycle perturbations during the Paleocene-Eocene Thermal Maximum using data assimilation
ADVANCES IN THE RECONSTRUCTION OF THE GLOBAL CARBON CYCLE OVER GEOLOGIC TIME I ORAL
paleoceanography and paleoclimatology | 13 december 2023
Mingsong Li, Lee R. Kump, Andy Ridgwell, Jessica E...
The Paleocene-Eocene Thermal Maximum (PETM), 56 million years ago, represents one of the best past analogs for investigating the future global warming...
View Abstract
Constraining LGM Ocean Carbonate Chemistry and Circulation using Data Assimilation
ADVANCING PALEOCLIMATOLOGY BY COMBINING DATA, MODELS, AND THEORY II ORAL
paleoceanography and paleoclimatology | 11 december 2023
Michelle E. Frazer, Lee R. Kump, Andy Ridgwell
This work aims to improve understanding of the ocean carbon cycles role in deglaciation from the Last Glacial Maximum (LGM) to the Holocene. To this e...
View Abstract
Evaluating the Plausible Range of N2O Biosignatures on ExoEarths: Flux-Abundance Relationships and Simulated Spectra for FGKM Main Sequence Stars
ATMOSPHERES, CLIMATE, AND POTENTIAL HABITABILITY OF ROCKY EXOPLANETS IV POSTER
planetary sciences | 15 december 2022
Edward Schwieterman, Stephanie L. Olson, Daria Pid...
Nitrous oxide (N2O)a product of microbial nitrogen metabolismis a compelling exoplanet biosignature gas with distinctive spectral features in the near...
View Abstract
Regulation of last glacial-interglacial atmospheric CO2 by sea iron solubility in an Earth system model
ATMOSPHERIC EXCHANGE WITH MARINE AND TERRESTRIAL ECOSYSTEMS II ORAL
biogeosciences | 13 december 2022
Natalia E. Opazo, Fabrice Lambert, Andy Ridgwell, ...
Ice and sediment cores provide important information about the natural variability of atmospheric carbon dioxide (CO2), which has ranged between 180 a...
View Abstract
Can the depth-dependent characteristics of sedimentary CaCO3 preservation help constrain past pCO2?
TOWARD A CO2 ‘KEELING CURVE’ FOR GEOLOGIC TIME I POSTER
paleoceanography and paleoclimatology | 12 december 2022
Andy Ridgwell, Markus Adloff, Sarah E. Greene
The boron isotopic (δ11B) composition of marine carbonates (as planktic foraminifera tests), in allowing the reconstruction of the pH of the past ocea...
View Abstract