Search Results - "Sijp, Willem P."

The Eocene–Oligocene transition: a review of marine and terrestrial proxy data, models and model–data comparisons by Hutchinson, David K, Coxall, Helen K, Lunt, Daniel J, Steinthorsdottir, Margret, de Boer, Agatha M, Baatsen, Michiel, von der Heydt, Anna, Huber, Matthew, Kennedy-Asser, Alan T, Kunzmann, Lutz, Ladant, Jean-Baptiste, Lear, Caroline H, Moraweck, Karolin, Pearson, Paul N, Piga, Emanuela, Pound, Matthew J, Salzmann, Ulrich, Scher, Howie D, Sijp, Willem P, ÅliwiÅska, Kasia K, Wilson, Paul A, Zhang, Zhongshi

“…The Eocene–Oligocene transition (EOT) was a climate shift from a largely ice-free greenhouse world to an icehouse climate, involving the first major glaciation…”
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Pronounced zonal heterogeneity in Eocene southern high-latitude sea surface temperatures by Douglas, Peter M. J., Affek, Hagit P., Ivany, Linda C., Houben, Alexander J. P., Sijp, Willem P., Sluijs, Appy, Schouten, Stefan, Pagani, Mark

“…Paleoclimate studies suggest that increased global warmth during the Eocene epoch was greatly amplified at high latitudes, a state that climate models cannot…”
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Effect of the deepening of the Tasman Gateway on the global ocean by Sijp, Willem P., England, Matthew H., Huber, Matthew

“…We examine the effect of the deepening of the Tasman Seaway at the end of the Eocene in a climate model with realistic late Eocene bathymetry and winds. For…”
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Reduced Stability of the Atlantic Meridional Overturning Circulation due to Wind Stress Feedback during Glacial Times by Arzel, Olivier, England, Matthew H., Sijp, Willem P.

“…A previous study by Mikolajewicz suggested that the wind stress feedback stabilizes the Atlantic thermohaline circulation. This result was obtained under…”
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Characterising meridional overturning bistability using a minimal set of state variables by Sijp, Willem P.

“…A close approximation of key state variables and salt fluxes for both the North Atlantic Deep Water (NADW) “on” and “off” states in a General Circulation Model…”
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Ice–Atmosphere Feedbacks Dominate the Response of the Climate System to Drake Passage Closure by England, Matthew H., Hutchinson, David K., Santoso, Agus, Sijp, Willem P.

“…The response of the global climate system to Drake Passage (DP) closure is examined using a fully coupled ocean–atmosphere–ice model. Unlike most previous…”
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The role of ocean gateways on cooling climate on long time scales by Sijp, Willem P., von der Heydt, Anna S., Dijkstra, Henk A., Flögel, Sascha, Douglas, Peter M.J., Bijl, Peter K.

“…We examine ocean changes in response to changes in paleogeography from the Cretaceous to present in an intermediate complexity model and in the fully coupled…”
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Southern Hemisphere Westerly Wind Control over the Ocean’s Thermohaline Circulation by Sijp, Willem P., England, Matthew H.

“…The effect of the position of the Southern Hemisphere subpolar westerly winds (SWWs) on the thermohaline circulation (THC) of the World Ocean is examined. The…”
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Changes in ocean vertical heat transport with global warming by Zika, Jan D., Laliberté, Frédéric, Mudryk, Lawrence R., Sijp, Willem P., Nurser, A. J. G.

“…Heat transport between the surface and deep ocean strongly influences transient climate change. Mechanisms setting this transport are investigated using…”
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Effect of Ocean Gateway Changes under Greenhouse Warmth by Sijp, Willem P., England, Matthew H., Toggweiler, J. R.

“…The role of tectonic Southern Ocean gateway changes in driving Antarctic climate change at the Eocene–Oligocene boundary remains a topic of debate. One…”
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Precise Calculations of the Existence of Multiple AMOC Equilibria in Coupled Climate Models. Part I: Equilibrium States by Sijp, Willem P., England, Matthew H., Gregory, Jonathan M.

“…This study examines criteria for the existence of two stable states of the Atlantic Meridional Overturning Circulation (AMOC) using a combination of theory and…”
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The effect of low ancient greenhouse climate temperature gradients on the ocean's overturning circulation by Sijp, Willem P, England, Matthew H

“…We examine whether the reduced meridional temperature gradients of past greenhouse climates might have reduced oceanic overturning, leading to a more quiescent…”
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Precise Calculations of the Existence of Multiple AMOC Equilibria in Coupled Climate Models. Part II: Transient Behavior by Sijp, Willem P., England, Matthew H.

“…In Part I of this paper an evolution equation for the Atlantic salinity and the reverse cell strength in the North Atlantic Deep Water (NADW) OFF state was…”
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Model simulations of early westward flow across the Tasman Gateway during the early Eocene by Sijp, Willem P, von der Heydt, Anna S, Bijl, Peter K

“…The timing and role in ocean circulation and climate of the opening of Southern Ocean gateways is as yet elusive. Recent micropalaeontological studies suggest…”
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Revisiting meridional overturing bistability using a minimal set of state variables: stochastic theory by Sijp, Willem P, Zika, Jan D, d’Orgeville, Marc, England, Matthew H

“…A stochastic analytical model of the Atlantic meridional overturning circulation (AMOC) is presented and tested against climate model data. AMOC stability is…”
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Atmospheric Moisture Transport Moderates Climatic Response to the Opening of Drake Passage by Sijp, Willem P., England, Matthew H.

“…The absence of the Drake Passage (DP) gateway in coupled models generally leads to vigorous Antarctic bottom water (AABW) formation, Antarctic warming, and the…”
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The Control of Polar Haloclines by Along-Isopycnal Diffusion in Climate Models by Sijp, Willem P., England, Matthew H.

“…Increasing the value of along-isopycnal diffusivity in a coupled model is shown to lead to enhanced stability of North Atlantic Deep Water (NADW) formation…”
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Sensitivity of the Atlantic Thermohaline Circulation and Its Stability to Basin-Scale Variations in Vertical Mixing by Sijp, Willem P., England, Matthew H.

“…This study shows that a reduction in vertical mixing applied inside the Atlantic basin can drastically increase North Atlantic Deep Water (NADW) stability with…”
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Role of the Drake Passage in Controlling the Stability of the Ocean’s Thermohaline Circulation by Sijp, Willem P., England, Matthew H.

“…The role of a Southern Ocean gateway in permitting multiple equilibria of the global ocean thermohaline circulation is examined. In particular, necessary…”
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Can Isopycnal Mixing Control the Stability of the Thermohaline Circulation in Ocean Climate Models? by Sijp, Willem P., Bates, Michael, England, Matthew H.

“…Convective overturning arising from static instability during winter is thought to play a crucial role in the formation of North Atlantic Deep Water (NADW). In…”
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