6,729 research outputs found
Multiple timescales of stochastically forced North Atlantic Ocean variability: A model study
No full textThe Atlantic meridional overturning circulation (AMOC) and the subpolar gyre (SPG) are important elements in mechanisms for multidecadal variability in models in the North Atlantic Ocean. In this study, a 2000-year long global ocean model integration forced with the atmospheric patterns associated with a white noise North Atlantic Oscillation (NAO) index is shown to have three distinct timescales of North Atlantic Ocean variability. First, an interannual timescale with variability shorter than 15 years, that can be related to Ekman dynamics. Second, a multidecadal timescale, on the 15- to 65-year range, that is mainly concentrated in the SPG region and is controlled by constructive interference between density anomalies around the gyre and the changing NAO forcing. Finally, the centennial timescales, with variability longer than 65 years, that can be attributed to the ocean being in a series of quasi-equilibrium states. The relationship between the ocean’s response and the NAO index differs for each timescale; the 15-year and shorter timescales are directly related to the NAO of the same year, 15- to 65-year timescales are dependent on the NAO index in the last 25–30 years in a sinusoidal sense while the 65-year and longer timescales relate to a sum of the last 50–80 years of the NAO index
Foster, Richard J.
No full textRichard J. Foster, author of Celebration and Discipline and Money Sex and Power , professor at Friends University in Wichita, Kansas. 095B:https://place.asburyseminary.edu/holinessphotos/1531/thumbnail.jp
Foster, Richard J.
No full textRichard J. Foster, author of Celebration and Discipline and Money Sex and Power , professor at Friends University in Wichita, Kansas. 095B:https://place.asburyseminary.edu/holinessphotos/1529/thumbnail.jp
Foster, Richard J.
No full textRichard J. Foster, author of Celebration and Discipline and Money Sex and Power , professor at Friends University in Wichita, Kansas. 095B:https://place.asburyseminary.edu/holinessphotos/1530/thumbnail.jp
Foster, Richard J.
No full textRichard J. Foster, author of Celebration and Discipline and Money Sex and Power , professor at Friends University in Wichita, Kansas. 095B:https://place.asburyseminary.edu/holinessphotos/1528/thumbnail.jp
Diapycnal mixing by meso-scale eddies
No full textThe mean available potential energy released by baroclinic instability into the meso-scale eddy field has to be dissipated in some way and Tandon and Garrett [Tandon, A., Garrett, C., 1996. On a recent parameterization of mesoscale eddies. J. Phys. Oceanogr. 26 (3), 406–416] suggested that this dissipation could ultimately involve irreversible mixing of buoyancy by molecular processes at the small-scale end of the turbulence cascade. We revisit this idea and argue that the presence of dissipation within the thermocline automatically requires that a component of the eddy flux associated with meso-scale eddies must be associated with irreversible mixing of buoyancy within the thermocline. We offer a parameterisation of the implied diapycnal diffusivity based on (i) the dissipation rate for eddy kinetic energy given by the meso-scale eddy closure of Eden and Greatbatch [Eden, C., Greatbatch, R.J., 2008. Towards a meso-scale eddy closure. Ocean Modell. 20, 223–239.] and (ii) a fixed mixing efficiency. The implied eddy-induced diapycnal diffusivity (κ) is implemented in a coarse resolution model of the North Atlantic. In contrast to the vertical diffusivity given by a standard vertical mixing scheme, large lateral inhomogeneities can be found for κ in the interior of the ocean. In general, κ is large, i.e. up to o(10) cm2/s, near the western boundaries and almost vanishing in the interior of the ocean
Bipolar disorder, Type A behavior, and coronary disease
No full textThis paper describes a model for integrating two psychological constructs--bipolar disorder and the Type A behavior pattern--each of which has been associated with enhanced risk of coronary heart disease (CHD). It highlights similarities between manic/hypomanic behaviors associated with bipolarity and the behaviors observed in Type A individuals. The proposed model conceptualizes Type A behavior as an alternating pattern of coping with challenging and stressful events. Thus, initial coping efforts are manifested as behavioral hyper-reactivity (including mania/hypomania), but this gives way to hypo-reactivity (including helplessness and depression) after repeated failure to assert control and/or attain relevant goals. This alternation of Type A coping patterns resembles the affective and behavioral transitions often seen in bipolar patients. Future research on psychological, epidemiological, and pathophysiological issues concerning CHD should document areas of commonality and independence between bipolarity and Type A behavior. Such studies would benefit from consideration of a model that identifies psychosocial dimensions common to Type A, mania/hypomania, and depression.Peer reviewedThis is an electronic version of an article published in Glass, David C. and Richard J. Contrada. "Bipolar disorder, Type A behaviour and coronary disease." Health Psychology Review, available online 15 Feb 2011. DOI:10.1080/17437199.2010.531568. Health Psychology Review is available online at: www.tandfonline.co
Using atmospheric model output to simulate the meteorological tsunami response to Tropical Storm Helene (2000)
No full textIn the fall of both 1999 and 2000, unexpected “rapid tides” occurred along the coast of the Avalon Peninsula of Newfoundland. These rapid tides have been linked to the passing of Tropical Storm Jose (1999) and Tropical Storm Helene (2000) over the Grand Banks. Here we examine the dynamic ocean response to Tropical Storm Helene (2000) using a barotropic shallow water ocean model forced by atmospheric pressure and surface winds derived from a simulation of Helene using a dynamical model of the atmosphere. The ocean model is able to capture the main features of the observed response at the coast of Newfoundland as seen in the available tide gauge data. Results show that the simulated sea level response at the coast is driven by a combination of wind stress and atmospheric pressure forcing, the former generally dominating. An exception is Conception Bay, Newfoundland, where the response is captured mainly by atmospheric pressure forcing. Offshore near the edge of the Grand Banks, atmospheric pressure and wind stress forcing are equally important. The wind‐forced response depends on the divergence of the surface wind stress and hence on the structure of the storm in the atmospheric model simulation. Sensitivity studies show the importance of having a small time interval (on the order of minutes) at which the atmospheric forcing is supplied to the ocean model and show the importance of the location of the storm track
Rabbi Richard J. Israel Papers, undated, 1949-1996, bulk 1980-1992.
No full textThe bulk of this collection contains resources and information pertaining to the career of Rabbi Richard J. Israel at the Jewish Community Center. The papers also contain several documents regarding Israel's work in Hillel and the Reconstructionist Rabbinical College. In addition, a brief memoir of his trip to the Soviet Union in 1974 is included, as well as copies of various Black Panther newspapers from New Haven, Connecticut.Rabbi Richard J. and Dr. Sherry Israel,Rabbi Richard J. Israel was born in 1929 in Chicago. After attending the University of Chicago and Hebrew Union College, Rabbi Israel began his lengthy career in Hillel at the University of California, Los Angeles. He later worked at Hillel at Yale University, followed by an Executive Director position at the Hillel Council of Greater Boston. Rabbi Israel was also the Director of Central Services and Judaica at the Jewish Community Center of Greater Boston and was the Director of the Rabbinic Program at Reconstructionist Rabbinical College. In addition to his work on college campuses and in Jewish education, he was the author of “The Kosher Pig and Other Curiosities of Modern Jewish Life” and “Jewish Identity Games: A How to do it Book.”Finding Aid available in New York and Newton Center, MA Reading Rooms and on Internet.far031
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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