Browsing by Author "Wunsch, Carl"
Now showing items 1-15 of 15
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Bidecadal Thermal Changes in the Abyssal Ocean
Wunsch, Carl; Heimbach, Patrick (American Meteorological Society, 2014)A dynamically consistent state estimate is used for the period 1992–2011 to describe the changes in oceanic temperatures and heat content, with an emphasis on determining the noise background in the abyssal (below 2000 m) ... -
Climate Change as an Intergenerational Problem
Wunsch, Carl; Schmitt, Raymond W.; Baker, D. James (National Academy of Sciences, 2013) -
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 ... -
A Depth-Derived Pleistocene Age-Model: Uncertainty Estimates, Sedimentation Variability, and Nonlinear Climate Change
Huybers, Peter John; Wunsch, Carl (American Geophysical Union, 2004)A new chronology of glaciation, spanning the last 780,000 years, is estimated from 21 marine sediment cores using depth as a proxy for time. To avoid biasing this ‘‘depth-derived’’ age estimate, the depth scale is first ... -
Dynamically and Kinematically Consistent Global Ocean Circulation and Ice State Estimates
Wunsch, Carl; Heimbach, Patrick (Elsevier BV, 2013)The World Ocean Circulation Experiment drove the development of estimates of the decadal scale time evolving general circulation that are dynamically and kinematically consistent. A long timescale, and a goal of estimation ... -
Exploratory Description of Low Frequency Ocean Temperature Variability and Its Global Structure
Wunsch, Carl (2019)An exploratory description is made of nearly global potential temperature variability from to months to 20 years using the field derived from the ECCOv4 state estimate. Relative to higher frequencies, longer periods do ... -
Last Glacial Maximum and deglacial abyssal seawater oxygen isotopic ratios
Wunsch, Carl (Copernicus GmbH, 2016)An earlier analysis of pore-water salinity (chlorinity) in two deep-sea cores, using terminal constraint methods of control theory, concluded that although a salinity amplification in the abyss was possible during the LGM, ... -
Obliquity Pacing of the Late Pleistocene Glacial Terminations
Huybers, Peter John; Wunsch, Carl (Nature Publishing Group, 2005)The 100,000-year timescale in the glacial/interglacial cycles of the late Pleistocene epoch (the past ,700,000 years) is commonly attributed to control by variations in the Earth’s orbit. This hypothesis has inspired models ... -
Ocean Mixing
Wunsch, Carl (Oxford University Press, 2017)Oceanic mixing is one of the major determinants of the ocean circulation and its climatological influences. Existing distributions of mixing properties determine the rates of storage and redistribution within the climate ... -
On the Variability of Wind Power Input to the Oceans with a Focus on the Subpolar North Atlantic
Zhai, Xiaoming; Wunsch, Carl (American Meteorological Society, 2013)Variations in power input to the ocean using a recent global “reanalysis” extending back to 1871 show a strong trend in the net power input since then, a trend dominated by the Southern Ocean region. This trend is interpreted ... -
Paleophysical Oceanography with an Emphasis on Transport Rates
Huybers, Peter John; Wunsch, Carl (Annual Reviews, 2010)Paleophysical oceanography is the study of the behavior of the fluid ocean of the past, with a specific emphasis on its climate implications, leading to a focus on the general circulation. Even if the circulation is not ... -
Pore Fluids and the LGM Ocean Salinity–Reconsidered
Wunsch, Carl (Elsevier, 2015)Pore fluid chlorinity/salinity data from deep-sea cores related to the salinity maximum of the last glacial maximum (LGM) are analyzed using estimation methods deriving from linear control theory. With conventional diffusion ... -
Rectification and Precession-Period Signals in the Climate System
Huybers, Peter John; Wunsch, Carl (American Geophysical Union, 2003)Precession of the equinoxes has no effect on the mean annual insolation, but does modulate the amplitude of the seasonal cycle. In a linear climate system, there would be no energy near the 21,000 year precession period. ... -
Time Series Analysis. A Heuristic Primer
Wunsch, Carl (2010) -
Towards determining uncertainties in global oceanic mean values of heat, salt, and surface elevation
Wunsch, Carl (Stockholm University Press, 2018-01-01)Lower-bounds on uncertainties in oceanic data and a model are calculated for the 20-year time means and their temporal evolution for oceanic temperature, salinity, and sea surface height, during the data-dense interval ...