Browsing FAS Scholarly Articles by Author "Huybers, Peter"
Now showing items 1-20 of 88
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A 65 k.y. Time Series From Sediment-Hosted Glasses Reveals Rapid Transitions in Ocean Ridge Magmas
Ferguson, David; Li, Yinqi; Langmuir, Charles; Costa, Kassandra; McManus, Jerry; Huybers, Peter; Corbotte, Suzanne (Geological Society of America, 2017)Studies of ocean ridge magmatism have been hampered by the difficulty in constructing time-series data over more than a few thousand years. Sediment rapidly covers newly formed ocean crust, and older rocks, even when ... -
Adaptation of US maize to temperature variations
Butler, Ethan E; Huybers, Peter John (Nature Publishing Group, 2013)High temperatures are associated with reduced crop yields1, 2, and predictions for future warming3 have raised concerns regarding future productivity and food security4, 5, 6, 7, 8. However, the extent to which adaptation ... -
Antarctic Temperature at Orbital Timescales Controlled by Local Summer Duration
Huybers, Peter John; Denton, George (Nature Publishing Group, 2008)During the late Pleistocene epoch, proxies for Southern Hemisphere climate from the Antarctic ice cores vary nearly in phase with Northern Hemisphere insolation intensity at the precession and obliquity timescales. This ... -
Antarctica's Orbital Beat
Huybers, Peter John (American Association for the Advancement of Science (AAAS), 2009)Alternating glacial and interglacial conditions have dominated Earth's climate for at least the past 800,000 years (1, 2). Such a global rhythm of glaciation is surprising—at least if summer solar radiation controls ... -
A Bayesian Algorithm for Reconstructing Climate Anomalies in Space and Time. Part 1: Development and Applications to Paleoclimate Reconstruction Problems
Tingley, Martin Patrick; Huybers, Peter John (American Meteorological Society, 2010)Reconstructing the spatial pattern of a climate field through time from a dataset of overlapping instrumental and climate proxy time series is a nontrivial statistical problem. The need to transform the proxy observations ... -
A Bayesian Algorithm for Reconstructing Climate Anomalies in Space and Time. Part 2: Comparison with the Regularized Expectation-Maximization Algorithm
Tingley, Martin Patrick; Huybers, Peter John (American Meterological Union, 2010)Part I presented a Bayesian algorithm for reconstructing climate anomalies in space and time (BARCAST). This method involves specifying simple parametric forms for the spatial covariance and temporal evolution of the climate ... -
Can Paleoceanographic Tracers Constrain Meridional Circulation Rates?
Huybers, Peter John; Gebbie, Geoffrey A; Marchal, Olivier (American Meteorological Society, 2007)The ability of paleoceanographic tracers to constrain rates of transport is examined using an inverse method to combine idealized observations with a geostrophic model. Considered are the spatial distribution, accuracy, ... -
Changes in Deep Pacific Temperature During the Mid-Pleistocene Transition and Quaternary
Siddall, Mark; Hönisch, Bärbel; Waelbroeck, Claire; Huybers, Peter John (Elsevier BV, 2010)An attempt is made to unravel the dual influences of seawater temperature and isotopic composition upon the oxygen-isotope records of benthic foraminifers from the deep Pacific \((δ^{18}O_{b})\). Our approach is to estimate ... -
Changes in the Phase of the Annual Cycle of Surface Temperature
Stine, Alexander R.; Huybers, Peter John; Fung, Inez Y. (Nature Publishing Group, 2009)The annual cycle in the Earth's surface temperature is extremely large—comparable in magnitude to the glacial–interglacial cycles over most of the planet. Trends in the phase and the amplitude of the annual cycle have been ... -
Changes in the Seasonal Cycle of Temperature and Atmospheric Circulation
Stine, Alexander Robin; Huybers, Peter John (American Meteorological Society, 2012)The vast majority of variability in the instrumental surface temperature record is at annual frequencies. Systematic changes in the yearly Fourier component of surface temperature have been observed since the midtwentieth ... -
The changing shape of Northern Hemisphere summer temperature distributions
McKinnon, Karen A.; Rhines, Andrew; Tingley, Martin P.; Huybers, Peter John (Wiley-Blackwell, 2016)The occurrence of recent summer temperature extremes in the midlatitudes has raised questions about whether and how the distributions of summer temperature are changing. While it is clear that in most regions the average ... -
Climate Change and Global Food Systems: Potential Impacts on Food Security and Undernutrition
Myers, Samuel Skipworth; Smith, Matthew R.; Guth, Sarah; Golden, Christopher DeWeir; Vaitla, Bapu; Mueller, Nathaniel Dean; Dangour, Alan D.; Huybers, Peter John (Annual Reviews, 2017)Great progress has been made in addressing global undernutrition over the past several decades, in part because of large increases in food production from agricultural expansion and intensification. Food systems, however, ... -
Climate Change during and after the Roman Empire: Reconstructing the Past from Scientific and Historical Evidence
McCormick, Michael; Büntgen, Ulf; Cane, Mark A.; Cook, Edward R.; Harper, Kyle; Huybers, Peter John; Litt, Thomas; Manning, Sturt W.; Mayewski, Paul Andrew; More, Alexander Frederick Medico; Nicolussi, Kurt; Tegel, Willy (MIT Press, 2012)Growing scientific evidence from modern climate science is loaded with implications for the environmental history of the Roman Empire and its successor societies. The written and archaeological evidence, although richer ... -
Combined obliquity and precession pacing of the late Pleistocene glacial cycles
Huybers, Peter John (Nature Publishing Group, 2011)Milankovitch1 proposed that Earth resides in an interglacial state when its spin axis both tilts to a high obliquity and precesses to align the Northern Hemisphere summer with Earth’s nearest approach to the Sun. This ... -
Comment on "Sensitivity of Seafloor Bathymetry to Climate-Driven Fluctuations in Mid-Ocean Ridge Magma Supply"
Huybers, Peter; Langmuir, Charles H.; Katz, Richard; Ferguson, D.; Proistosescu, Cristian; Carbotte, S. (American Association for the Advancement of Science (AAAS), 2016)Recent studies have proposed that the bathymetric fabric of the seafloor formed at mid-ocean ridges records rapid (23,000 to 100,000 years) fluctuations in ridge magma supply caused by sealevel changes that modulate melt ... -
Comment on “Hockey sticks, principal components, and spurious significance” by S. McIntyre and R. McKitrick
Huybers, Peter John (Wiley-Blackwell, 2005) -
Comparison of Full and Empirical Bayes Approaches for Inferring Sea-Level Changes From Tide-Gauge Data
Piecuch, Christopher; Huybers, Peter; Tingley, Martin (American Geophysical Union (AGU), 2017-03)Tide‐gauge data are one of the longest instrumental records of the ocean, but these data can be noisy, gappy, and biased. Previous studies have used empirical Bayes methods to infer the sea‐level field from tide‐gauge ... -
Compensation between Model Feedbacks and Curtailment of Climate Sensitivity
Huybers, Peter John (American Meteorological Society, 2010)The spread in climate sensitivity obtained from 12 general circulation model runs used in the Fourth Assessment of the Intergovernmental Panel on Climate Change indicates a 95% confidence interval of \(2.1^{\circ}-5.5^{\circ}C\), ... -
Consequences of Pacing the Pleistocene 100 kyr Ice Ages by Nonlinear Phase Locking to Milankovitch Forcing
Tziperman, Eli; Raymo, Maureen E.; Huybers, Peter John; Wunsch, Carl (American Geophysical Union, 2006)The consequences of the hypothesis that Milankovitch forcing affects the phase (e.g., termination times) of the 100 kyr glacial cycles via a mechanism known as “nonlinear phase locking” are examined. Phase locking provides ...