5,621 research outputs found
Uncertainties due to transport-parameter sensitivity in an efficient 3-D ocean-climate model
No full textA simplified climate model is presented which includes a fully 3-D, frictional geostrophic (FG) ocean component but retains an integration efficiency considerably greater than extant climate models with 3-D, primitive-equation ocean representations (20k years of integration can be completed in about a day on a PC). The model also includes an Energy and Moisture Balance atmosphere and a dynamic and thermodynamic sea-ice model. Using a semi-random ensemble of 1,000 simulations, we address both the inverse problem of parameter estimation, and the direct problem of quantifying the uncertainty due to mixing and transport parameters. Our results represent a first attempt at tuning a 3-D climate model by a strictly defined procedure, which nevertheless considers the whole of the appropriate parameter space. Model estimates of meridional overturning and Atlantic heat transport are well reproduced, while errors are reduced only moderately by a doubling of resolution. Model parameters are only weakly constrained by data, while strong correlations between mean error and parameter values are mostly found to be an artefact of single-parameter studies, not indicative of global model behaviour. Single-parameter sensitivity studies can therefore be misleading. Given a single, illustrative scenario of CO2 increase and fixing the polynomial coefficients governing the extremely simple radiation parameterisation, the spread of model predictions for global mean warming due solely to the transport parameters is around one degree after 100 years forcing, although in a typical 4,000-year ensemble-member simulation, the peak rate of warming in the deep Pacific occurs 400 years after the onset of the forcing. The corresponding uncertainty in Atlantic overturning after 100 years is around 5 Sv, with a small, but non-negligible, probability of a collapse in the long term
Poems / by M. Betham-Edwards Author Of "The White House By The Sea" ...
No full textPOEMS / BY M. BETHAM-EDWARDS AUTHOR OF "THE WHITE HOUSE BY THE SEA" ...
Poems / by M. Betham-Edwards Author Of "The White House By The Sea" ... (1)
Cover (1)
Title page (3)
Titelseite (5)
Widmung (7)
Note (8)
Contents (11)
Love (15)
Recollection - The Life That Is Life (17)
Religion (83)
The Praise Of Light - L'Envoi (85)
Nature (101)
Child's Summer Song - March Music (103)
Chapter (118)
The Work-A-Day World And Romance (119)
The Wife's Prayer - The English Shipwrecked Off Finistère (121)
Translations (187)
The Gascon's River - Verselets (189
Gerbera sylvicola (Asteraceae: Mutisieae), a new forest species from KwaZulu-Natal, South Africa
No full textJohnson, Isabel M., Crouch, Neil R., Edwards, Trevor J. (2014): Gerbera sylvicola (Asteraceae: Mutisieae), a new forest species from KwaZulu-Natal, South Africa. Phytotaxa 186 (4): 229-235, DOI: 10.11646/phytotaxa.186.4.7, URL: http://dx.doi.org/10.11646/phytotaxa.186.4.
Exploratory talk within collaborative small groups in mathematics
No full textThis report describes one aspect of a wider research study on exploratory talk within collaborative small groups in secondary mathematics lessons. It outlines students’ views of using collaborative activity to learn mathematics. The fuller research study explores the extent to which exploratory talk occurs in collaborative peer groups in secondary mathematics classrooms
The Scotsman, the Greek, the Mauritian company and the Internet: where on earth do things happen in cyberspace?
No full textThe author discusses the problems posed by internet jurisdiction, using the Bonnier Media case as an example. Edwards draws on legislative measures, in particular, the European Commission's Brussels 1 and 2 to expand the argument, and attempts to understand the complexities of the "where" in "where do things happen in cyberspace"
Multiple thermohaline states due to variable diffusivity in a hierarchy of simple models
No full textThe effect of variable vertical diffusivity is investigated in dynamically reduced models of the thermohaline circulation (THC) in a rectangular basin. In a simple box model, sufficiently strong variation of the diffusivity v with stability G can lead to the existence of two stable equilibria. Related behaviour is found in well-resolved frictional geostrophic (FG) models. A hierarchy of under-resolved FG models is constructed, the simplest of which is an 8-cell cube, to connect the two extremes of resolution. Multiple solutions in low-order models are found to correspond to the formation of high-gradient layers which are unlikely to be resolved by current ocean models. Physical arguments show that layering and multiple solutions require v to decrease more rapidly than 1/G and sensitivity experiments suggest that, in addition, v must vary by a factor of 10–100. In two-hemisphere runs with salinity forcing included, the dependence of diffusivity on stratification is found to marginally favour equatorially symmetric states. Finally, such variation is shown to have a profound effect on the periodic, flush-collapse cycle under strong saline forcing; specifically, if diffusivity is taken to be a function of stratification rather than depth, regime transitions can occur much more easily. It will therefore be important for climate modelling to determine which is more realistic
Islam and politics in the contemporary world
No full textThe dreadful events of 11 September have brought Islam to the forefront of world politics. This authoritative new book provides the analysis for a far-reaching introduction to Islamic politics for those coming to the subject for the first time. This account provides a deep insight into dimensions of Muslim political life; from democracy to despots, women to world affairs and history to heresy. Milton-Edwards offers an account of key contemporary concepts and debates that focus on the relationship between Islam and topical issues including politics, protest and opposition, violence, the West, democracy, the state and women. Giving an broad global overview the author includes a range of first-hand interviews with major Islamic figures and leaders of movements. Milton-Edwards charts the development of a political trend in Islam throughout the twentieth century and explores its myriad dimensions. The author also explores the prospects for political Islam in the new millennium. With further reading suggestions, and a glossary, Islam and Politics in the Contemporary World is an indispensable introduction to the subject and will prove invaluable as a textbook for students of politics and religion
Jere Nash Interview with Wayne Edwards
No full textInterview conducted by author Jere Nash with Wayne Edwards in the process of writing Mississippi Politics: The Struggle for Power, 1976-2006. Edwards was Maurice Dantin\u27s campaign manager in the 1978 race for the U.S. Senate and communications director for Bill Allain\u27s 1979 campaign for attorney general. Topics covered include Edwards\u27 student years at Millsaps College and his radio broadcast career; integrating after-hours place in Jackson, Mississippi called Club 77; organizing a Millsaps march to protest the Jackson State shootings; Bill Waller\u27s 1971 campaign; working for governors Bill Waller and Cliff Finch in public relations; working on the Jimmy Carter presidential campaign -- responding to gun control attacks, gaining George Wallace\u27s endorsement, Danny Cupit working with Senator James O. Eastland; unification of the Democratic Party in Mississippi; Carter\u27s visit to Yazoo City, Mississippi; being approached to run Eastland\u27s 1978 campaign and the senator\u27s decision not to run; working on Maurice Dantin\u27s 1978 senate campaign; Charles Evers; Thad Cochran; and Bill Allain\u27s campaign for attorney general
Fig. 9 in Cephalopods from the Cretaceous/Tertiary Boundary Interval on the Atlantic Coastal Plain, with a Description of the Highest Ammonite Zones in North America. Part 1. Maryland and North Carolina
No full textFig. 9. Approximate correlation of the samples from Maryland with the Santee Coastal Reserve (SCR) core (Edwards et al., 1999). The horizontal arrows indicate sample locations in the SCR core. Because calcareous nannofossil Subzone CC25c is missing in the SCR core, Zone CC25 is shown as undifferentiated. The time scale is based on Berggren et al. (1995) as interpreted for the SCR core by Edwards et al. (1999).Published as part of LANDMAN, NEIL H., JOHNSON, RALPH O. & EDWARDS, LUCY E., 2004, Cephalopods from the Cretaceous/Tertiary Boundary Interval on the Atlantic Coastal Plain, with a Description of the Highest Ammonite Zones in North America. Part 1. Maryland and North Carolina, pp. 1-64 in American Museum Novitates 3454 (1) on page 22, DOI: 10.1206/0003-0082(2004)4542.0.CO;2, http://zenodo.org/record/538265
Anxiety in Parkinson's: what do we know, what can we learn from research, and practical tips for dealing with the problem. [Podcast]
No full textWelcome to part 1 of our special two-part podcast to mark World Mental Health Day 2023 on the 10th October. Julie Jones and Neil Morrison from NoSPRIG are joined by Senior Clinical Neuropsychologist Dr Jennifer Foley and mental health specialist Parkinson's Nurse Emma Edwards. In this first episode, we take an in-depth look at anxiety - one of the most common mental health issues facing people with Parkinson's
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