A. Winguth
YOU?
Author Swipe
View article: Collapse of Deep-Sea Circulation during an Eocene Hyperthermal Hothouse – A DeepMIP Study with CESM1.2
Collapse of Deep-Sea Circulation during an Eocene Hyperthermal Hothouse – A DeepMIP Study with CESM1.2 Open
During the Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma), a rapid injection of greenhouse gases (with isotopically depleted carbon) into the atmosphere led to a ~5 °C global temperature rise, ocean acidification, and perturbation of mari…
View article: <scp>ENSO</scp> sentinels in the Americas' humid tropics: We need combined hydrometric and isotopic monitoring for improved El Niño and La Niña impact prediction
<span>ENSO</span> sentinels in the Americas' humid tropics: We need combined hydrometric and isotopic monitoring for improved El Niño and La Niña impact prediction Open
This Scientific Briefing presents results from a nearly 10‐year hydrometric and isotope monitoring network across north‐central Costa Rica, a region known as a headwater‐dependent system. This monitoring system has recorded different El Ni…
View article: A multidisciplinary approach to resolving the end-Guadalupian extinction
A multidisciplinary approach to resolving the end-Guadalupian extinction Open
The transition from the middle to late Permian (Guadalupian–Lopingian) is claimed to record one or more extinction events that rival the ‘Big Five’ in terms of depletion of biological diversity and reorganization of ecosystem structure. Ye…
View article: ENSO sentinels in the Americas’ humid tropics: We need combined hydrometric and isotopic monitoring for improved El Niño and La Niña impact prediction
ENSO sentinels in the Americas’ humid tropics: We need combined hydrometric and isotopic monitoring for improved El Niño and La Niña impact prediction Open
The El Niño-Southern Oscillation (ENSO) phenomena, originating in the tropical Pacific region, is an interannual climate variability driven by sea surface temperature and atmospheric pressure changes that affect weather patterns globally. …
View article: Pace, magnitude, and nature of terrestrial climate change through the end-Permian extinction in southeastern Gondwana
Pace, magnitude, and nature of terrestrial climate change through the end-Permian extinction in southeastern Gondwana Open
Rapid climate change was a major contributor to the end-Permian extinction (EPE). Although well constrained for the marine realm, relatively few records document the pace, nature, and magnitude of climate change across the EPE in terrestri…
View article: Bentho‐Pelagic Decoupling: The Marine Biological Carbon Pump During Eocene Hyperthermals
Bentho‐Pelagic Decoupling: The Marine Biological Carbon Pump During Eocene Hyperthermals Open
Future environmental change may profoundly affect oceanic ecosystems in a complex way, due to the synergy between rising temperatures, reduction in mixing and upwelling due to enhanced stratification, ocean acidification, and associated bi…
View article: Decision on cp-2019-133
Decision on cp-2019-133 Open
View article: ODP Site 208-1263 PETM, ETM2, ETM3: barite accumulation rates, benthic foraminiferal data
ODP Site 208-1263 PETM, ETM2, ETM3: barite accumulation rates, benthic foraminiferal data Open
Data from Ocean Drilling Program Site 1263 on Walvis Ridge in SE Atlantic include barite accumulation rates, benthic foraminiferal data, and carbon and oxygen isotopes for Eocene hyperthermals: PETM, ETM2, ETM3. Changes in primary producti…
View article: Age and pattern of the southern high-latitude continental end-Permian extinction constrained by multiproxy analysis
Age and pattern of the southern high-latitude continental end-Permian extinction constrained by multiproxy analysis Open
View article: The Effects of Younger Dryas Orbital Parameterand Atmospheric pCO&lt;sub&gt;2&lt;/sub&gt;Changes on Radiative Forcing and African Monsoonal Circulation
The Effects of Younger Dryas Orbital Parameterand Atmospheric pCO<sub>2</sub>Changes on Radiative Forcing and African Monsoonal Circulation Open
Differences in the Atlantic meridional overturning circulation (AMOC) from the Younger Dryas (YD) to the Holocene can be explained by, but not limited to, factors relating to atmospheric greenhouse gas concentrations, discharge of freshwat…
View article: The DeepMIP contribution to PMIP4: experimental design for model simulations of the EECO, PETM, and pre-PETM (version 1.0)
The DeepMIP contribution to PMIP4: experimental design for model simulations of the EECO, PETM, and pre-PETM (version 1.0) Open
Past warm periods provide an opportunity to evaluate climate models under extreme forcing scenarios, in particular high ( > 800 ppmv) atmospheric CO2 concentrations. Although a post hoc intercomparison of Eocene ( ∼ 50 Ma) climate model si…
View article: Response of export production and dissolved oxygen concentrations in oxygen minimum zones to <i>p</i> CO <sub>2</sub> and temperature stabilization scenarios in the biogeochemical model HAMOCC 2.0
Response of export production and dissolved oxygen concentrations in oxygen minimum zones to <i>p</i> CO <sub>2</sub> and temperature stabilization scenarios in the biogeochemical model HAMOCC 2.0 Open
Dissolved oxygen (DO) concentration in the ocean is an important component of marine biogeochemical cycles and will be greatly altered as climate change persists. In this study a global oceanic carbon cycle model (HAMOCC 2.0) is used to ad…
View article: Expanded oxygen minimum zones during the late Paleocene‐early Eocene: Hints from multiproxy comparison and ocean modeling
Expanded oxygen minimum zones during the late Paleocene‐early Eocene: Hints from multiproxy comparison and ocean modeling Open
Anthropogenic warming could well drive depletion of oceanic oxygen in the future. Important insight into the relationship between deoxygenation and warming can be gleaned from the geological record, but evidence is limited because few ocea…
View article: Ocean carbon cycling during the past 130 000 years – a pilot study on inverse palaeoclimate record modelling
Ocean carbon cycling during the past 130 000 years – a pilot study on inverse palaeoclimate record modelling Open
What role did changes in marine carbon cycle processes and calcareous organisms play in glacial–interglacial variation in atmospheric pCO2? In order to answer this question, we explore results from an ocean biogeochemical general circulati…
View article: RESEARCH FOCUS: Changes in productivity and oxygenation during the Permian-Triassic transition
RESEARCH FOCUS: Changes in productivity and oxygenation during the Permian-Triassic transition Open
The causes of the transition from an Early Permian cold house into an Early Triassic hothouse world have been of great interest, because this time encompasses the greatest extinction of species in Earth’s history. Common hypotheses for the…
View article: Comments on cp-2016-55
Comments on cp-2016-55 Open
View article: DeepMIP: experimental design for model simulations of the EECO, PETM, and pre-PETM
DeepMIP: experimental design for model simulations of the EECO, PETM, and pre-PETM Open
Past warm periods provide an opportunity to evaluate climate models under extreme forcing scenarios, in particular high (> 800 ppmv) atmospheric CO2 concentrations. Although a post-hoc intercomparison of Eocene (~50 million years ago, Ma) …
View article: Ocean carbon cycling during the past 130,000 years – a pilot study on inverse paleoclimate record modelling
Ocean carbon cycling during the past 130,000 years – a pilot study on inverse paleoclimate record modelling Open
What role did changes in marine carbon cycle processes and calcareous organisms play for glacial-interglacial variation in atmospheric pCO2? In order to answer this question, we explore results from an ocean biogeochemical ocean general ci…
View article: A model–model and data–model comparison for the early Eocene hydrological cycle
A model–model and data–model comparison for the early Eocene hydrological cycle Open
A range of proxy observations have recently provided constraints on how Earth's hydrological cycle responded to early Eocene climatic changes. However, comparisons of proxy data to general circulation model (GCM) simulated hydrology are li…
View article: Response of Export Production and Dissolved Oxygen Concentrations to pCO <sub>2</sub> and Temperature Stabilization Scenarios
Response of Export Production and Dissolved Oxygen Concentrations to pCO <sub>2</sub> and Temperature Stabilization Scenarios Open
Dissolved oxygen (DO) concentration in the ocean is an important component of marine biogeochemical cycles and will be greatly altered as climate change persists. In this study a global oceanic carbon cycle model (HAMOCC 2.0) is used to ad…
View article: I/Ca ratios of different benthic foraminifera during the PETM
I/Ca ratios of different benthic foraminifera during the PETM Open
View article: Benthic foraminiferal I/Ca, fish teeth Ce anomaly, and Mn enrichment factor of bulk sediment during the late Paleocene-early Eocene
Benthic foraminiferal I/Ca, fish teeth Ce anomaly, and Mn enrichment factor of bulk sediment during the late Paleocene-early Eocene Open
Important insight into the relationship between de-oxygenation and warming can be obtained from the geological record, but evidence is limited because few ocean oxygenation records are available for past greenhouse climate conditions. We u…
View article: Ce anomaly of fish teeth from ODP Sites 208-1262 and 208-1263
Ce anomaly of fish teeth from ODP Sites 208-1262 and 208-1263 Open
View article: Mn oxide enrichment factor during the PETM
Mn oxide enrichment factor during the PETM Open
View article: (Table S) Planktonic foraminifera I/Ca during the PETM
(Table S) Planktonic foraminifera I/Ca during the PETM Open
As yet no evidence has been presented for pervasive deoxygenation in the upper water column through expansion of Oxygen Minimum Zones (OMZs) during the PETM. We apply a novel proxy for paleo-redox conditions, the iodine to calcium ratio (I…
View article: Insights into the early Eocene hydrological cycle from an ensemble of atmosphere–ocean GCM simulations
Insights into the early Eocene hydrological cycle from an ensemble of atmosphere–ocean GCM simulations Open
Recent studies, utilising a range of proxies, indicate that a significant perturbation to global hydrology occurred at the Paleocene–Eocene Thermal Maximum (PETM; ~56 Ma). An enhanced hydrological cycle for the warm early Eocene is also su…