Search Results - "Zeebe, Richard"

History of Seawater Carbonate Chemistry, Atmospheric CO2, and Ocean Acidification by Zeebe, Richard E

“…Humans are continuing to add vast amounts of carbon dioxide (CO 2 ) to the atmosphere through fossil fuel burning and other activities. A large fraction of the…”
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Solar System chaos and the Paleocene-Eocene boundary age constrained by geology and astronomy by Zeebe, Richard E, Lourens, Lucas J

“…Astronomical calculations reveal the Solar System's dynamical evolution, including its chaoticity, and represent the backbone of cyclostratigraphy and…”
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Reduced Variations in Earth’s and Mars’ Orbital Inclination and Earth’s Obliquity from 58 to 48 Myr ago due to Solar System Chaos by Zeebe, Richard E.

“…Abstract The dynamical evolution of the solar system is chaotic with a Lyapunov time of only ∼5 Myr for the inner planets. Due to the chaos it is fundamentally…”
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OrbitN: A Symplectic Integrator for Planetary Systems Dominated by a Central Mass—Insight into Long-term Solar System Chaos by Zeebe, Richard E.

“…Abstract Reliable studies of the long-term dynamics of planetary systems require numerical integrators that are accurate and fast. The challenge is often…”
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Anthropogenic carbon release rate unprecedented during the past 66 million years by Zeebe, Richard E., Ridgwell, Andy, Zachos, James C.

“…Carbon release rates from anthropogenic sources reached a record high of ∼10 Pg C yr −1 in 2014. Geologic analogues from past transient climate changes could…”
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Kinetic fractionation of carbon and oxygen isotopes during hydration of carbon dioxide by Zeebe, Richard E.

“…Kinetic isotope effects (KIEs) during the inorganic hydration of carbon dioxide (CO2) in aqueous solution cause reduced stable carbon and oxygen isotope ratios…”
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An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics by Zachos, James C, Dickens, Gerald R, Zeebe, Richard E

“…Past episodes of greenhouse warming provide insight into the coupling of climate and the carbon cycle and thus may help to predict the consequences of unabated…”
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DYNAMIC STABILITY OF THE SOLAR SYSTEM: STATISTICALLY INCONCLUSIVE RESULTS FROM ENSEMBLE INTEGRATIONS by Zeebe, Richard E

“…Due to the chaotic nature of the solar system, the question of its long-term stability can only be answered in a statistical sense, for instance, based on…”
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A Secular Solar System Resonance that Disrupts the Dominant Cycle in Earth’s Orbital Eccentricity (g 2 − g 5): Implications for Astrochronology by Zeebe, Richard E., Lantink, Margriet L.

“…Abstract The planets’ gravitational interaction causes rhythmic changes in Earth’s orbital parameters (also called Milanković cycles), which have powerful…”
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Carbon dioxide forcing alone insufficient to explain Palaeocene-Eocene Thermal Maximum warming by Zeebe, Richard E, Zachos, James C, Dickens, Gerald R

“…The Palaeocene-Eocene Thermal Maximum (about 55 Myr ago) represents a possible analogue for the future and thus may provide insight into climate system…”
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Atmospheric CO2 decline during the Pliocene intensification of Northern Hemisphere glaciations by Bartoli, Gretta, Hönisch, Bärbel, Zeebe, Richard E.

“…Several hypotheses have been put forward to explain the onset of intensive glaciations on Greenland, Scandinavia, and North America during the Pliocene epoch…”
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Orbital forcing of the Paleocene and Eocene carbon cycle by Zeebe, Richard E., Westerhold, Thomas, Littler, Kate, Zachos, James C.

“…Multimillion‐year proxy records across the Paleocene and Eocene show prominent variations on orbital time scales. The cycles, which have been identified at…”
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Time-dependent climate sensitivity and the legacy of anthropogenic greenhouse gas emissions by Zeebe, Richard E.

“…Climate sensitivity measures the response of Earth’s surface temperature to changes in forcing. The response depends on various climate processes that feed…”
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Rapid and sustained surface ocean acidification during the Paleocene-Eocene Thermal Maximum by Penman, Donald E., Hönisch, Bärbel, Zeebe, Richard E., Thomas, Ellen, Zachos, James C.

“…The Paleocene‐Eocene Thermal Maximum (PETM) has been associated with the release of several thousands of petagrams of carbon (Pg C) as methane and/or carbon…”
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Stepsize errors in the N-body problem: discerning Mercury’s true possible long-term orbits by Hernandez, David M, Zeebe, Richard E, Hadden, Sam

“…ABSTRACT Numerical integrations of the Solar system have been carried out for decades. Their results have been used, for example to determine whether the Solar…”
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What caused the long duration of the Paleocene-Eocene Thermal Maximum? by Zeebe, Richard E.

“…Paleorecords show that the Paleocene‐Eocene Thermal Maximum (PETM, ∼56 Ma) was associated with a large carbon cycle anomaly and global warming >5 K, which…”
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Long-term legacy of massive carbon input to the Earth system: Anthropocene versus Eocene by Zeebe, Richard E., Zachos, James C.

“…Over the next few centuries, with unabated emissions of anthropogenic carbon dioxide (CO2), a total of 5000Pg C may enter the atmosphere, causing CO2…”
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Oceans. Carbon emissions and acidification by Zeebe, Richard E, Zachos, James C, Caldeira, Ken, Tyrrell, Toby

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A new value for the stable oxygen isotope fractionation between dissolved sulfate ion and water by Zeebe, Richard E.

“…Although the stable oxygen isotope fractionation between dissolved sulfate ion ( SO 4 2 - ) and H 2O (hereafter α ( SO 4 2 - – H 2 O ) ) is of physico-chemical…”
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Comment on “The Effects of Secular Calcium and Magnesium Concentration Changes on the Thermodynamics of Seawater Acid/Base Chemistry: Implications for Eocene and Cretaceous Ocean Carbon Chemistry and Buffering” by Hain et al. (2015) by Zeebe, Richard E., Tyrrell, Toby

“…Hain et al. (2015, https://doi.org/10.1002/2014GB004986, hereafter H15) calculated effects of changing [Ca2+] and [Mg2+] on the equilibrium constants of the…”
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