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  • Journal article
    Brown NJ, Weiner J, Hellgardt K, Shaffer MSP, Williams CKet al., 2013,

    Phosphinate stabilised ZnO and Cu colloidal nanocatalysts for CO<sub>2</sub> hydrogenation to methanol

    , CHEMICAL COMMUNICATIONS, Vol: 49, Pages: 11074-11076, ISSN: 1359-7345
  • Journal article
    Turnbull J, Graven H, Miller J, Lehman Set al., 2013,

    ATMOSPHERIC RADIOCARBON WORKSHOP REPORT

    , RADIOCARBON, Vol: 55, Pages: 1470-1474, ISSN: 0033-8222
  • Journal article
    Miller J, Lehman S, Wolak C, Turnbull J, Dunn G, Graven H, Keeling R, Meijer HAJ, Aerts-Bijma AT, Palstra SWL, Smith AM, Allison C, Southon J, Xu X, Nakazawa T, Aoki S, Nakamura T, Guilderson T, LaFranchi B, Mukai H, Terao Y, Uchida M, Kondo Met al., 2013,

    INITIAL RESULTS OF AN INTERCOMPARISON OF AMS-BASED ATMOSPHERIC <SUP>14</SUP>CO<sub>2</sub> MEASUREMENTS

    , RADIOCARBON, Vol: 55, Pages: 1475-1483, ISSN: 0033-8222
  • Journal article
    Graven HD, Xu X, Guilderson TP, Keeling RF, Trumbore SE, Tyler Set al., 2013,

    COMPARISON OF INDEPENDENT Δ<SUP>14</SUP>CO<sub>2</sub> RECORDS AT POINT BARROW, ALASKA

    , RADIOCARBON, Vol: 55, Pages: 1541-1545, ISSN: 0033-8222
  • Journal article
    Ukkola AM, Prentice IC, 2013,

    A worldwide analysis of trends in water-balance evapotranspiration

    , HYDROLOGY AND EARTH SYSTEM SCIENCES, Vol: 17, Pages: 4177-4187, ISSN: 1027-5606
  • Book chapter
    Solanki SK, Krivova NA, Haigh JD, 2013,

    Solar Irradiance Variability and Climate

    , ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 51, Editors: Faber, VanDishoeck, Publisher: ANNUAL REVIEWS, Pages: 311-351
  • Journal article
    Dhomse SS, Chipperfield MP, Feng W, Ball WT, Unruh YC, Haigh JD, Krivova NA, Solanki SK, Smith AKet al., 2013,

    Stratospheric O<sub>3</sub> changes during 2001-2010: the small role of solar flux variations in a chemical transport model

    , ATMOSPHERIC CHEMISTRY AND PHYSICS, Vol: 13, Pages: 10113-10123, ISSN: 1680-7316
  • Book chapter
    Stewart RIA, Dossena M, Bohan DA, Jeppesen E, Kordas RL, Ledger ME, Meerhoff M, Moss B, Mulder C, Shurin JB, Suttle B, Thompson R, Trimmer M, Woodward Get al., 2013,

    Mesocosm Experiments as a Tool for Ecological Climate-Change Research

    , ADVANCES IN ECOLOGICAL RESEARCH, VOL 48: GLOBAL CHANGE IN MULTISPECIES SYSTEMS, PT 3, Editors: Woodward, OGorman, Publisher: ELSEVIER ACADEMIC PRESS INC, Pages: 71-181, ISBN: 978-0-12-417199-2
  • Book
    O'Gorman EJ, Woodward G, 2013,

    Editorial Commentary: Monitoring, Manipulation and Modelling of Ecological Responses to Global Change in Multispecies Systems PREFACE

    , Publisher: ELSEVIER ACADEMIC PRESS INC, ISBN: 978-0-12-417199-2
  • Journal article
    Ireson AM, Butler AP, 2013,

    A critical assessment of simple recharge models: application to the UK Chalk

    , HYDROLOGY AND EARTH SYSTEM SCIENCES, Vol: 17, Pages: 2083-2096, ISSN: 1027-5606
  • Conference paper
    Vire A, Xiang J, Piggott M, Spinneken J, Pain Cet al., 2013,

    Numerical Modelling of Fluid-structure Interactions for Floating Wind Turbine Foundations

    , Twenty-third International Offshore and Polar Engineering Conference, Pages: 377-382

    The aim of this study is to model the interactions between fluids and solids using fully nonlinear models. Non-linearity is important in the context of floating wind turbines, for example, to model breaking waves impacting on the structure and the effect of the solid’s elasticity. In this work, the fluid- and solid-dynamics equations are solved using separate finite-element models, which are coupled at every time step. This enables the mutual interactions between fluids and moving solids to be modelled. Importantly, the coupling algorithm ensures that the action-reaction principle is satisfied at a discrete level, independently of the order of representation of the discrete fields in each model. To the authors’ knowledge, the present algorithm is novel in that it can simultaneously handle (i) non-matching fluid and solid meshes, (ii) different polynomial orders of the basis functions on each mesh, and (iii) different fluid and solid time steps. Results are shown for: (i) a bottom-mounted pile subjected to small-amplitude waves in a numerical wave tank, and (ii) a truncated pile floating at an interface between air and water.
  • Book chapter
    Slade R, Bauen A, 2013,

    Biomass use on a global scale

    , Encyclopedia of Sustainability Science and Technology, Publisher: Springer
  • Book chapter
    Gennaioli C, Martin R, Muuls M, 2013,

    Using micro data to examine causal effects of climate policy

    , Handbook on Energy and Climate Change
  • Journal article
    Armitage JJ, Dunkley Jones T, Duller RA, Whittaker AC, Allen PAet al., 2013,

    Temporal buffering of climate-driven sediment flux cycles by transient catchment response

    , EARTH AND PLANETARY SCIENCE LETTERS, Vol: 369-370, Pages: 200-210
  • Journal article
    Jackson CA-L, Chua ST, Bell RE, Magee Cet al., 2013,

    Structural style and early stage growth of inversion structures: 3D seismic insights from the Egersund Basin, offshore Norway

    , Journal of Structural Geology, Vol: 46, Pages: 167-185
  • Journal article
    Bragg FJ, Prentice IC, Harrison SP, Eglinton G, Foster PN, Rommerskirchen F, Rullkoetter Jet al., 2013,

    Stable isotope and modelling evidence for CO<sub>2</sub> as a driver of glacial-interglacial vegetation shifts in southern Africa

    , BIOGEOSCIENCES, Vol: 10, Pages: 2001-2010, ISSN: 1726-4170
  • Conference paper
    Reeve MT, Bell RE, Jackson CA-L, 2013,

    The influence of Caledonian structures on Late Jurassic faulting offshore western Norway: new insights from 3D seismic reflection data, STUDENT ORAL PRESENTATION PRIZE WINNER

    , Tectonic Studies Group Annual Meeting
  • Conference paper
    Bell RE, Jackson CA-L, Whipp PS, Clements Bet al., 2013,

    Quantifying the timing and magnitude of fault reactivation in the northern North Sea

    , Tectonic Studies Group Annual Meeting
  • Journal article
    Khatiwala S, Tanhua T, Fletcher SM, Gerber M, Doney SC, Graven HD, Gruber N, McKinley GA, Murata A, Rios AF, Sabine CLet al., 2013,

    Global ocean storage of anthropogenic carbon

    , BIOGEOSCIENCES, Vol: 10, Pages: 2169-2191, ISSN: 1726-4170
  • Journal article
    Wanninkhof R, Park G-H, Takahashi T, Sweeney C, Feely R, Nojiri Y, Gruber N, Doney SC, McKinley GA, Lenton A, Le Quere C, Heinze C, Schwinger J, Graven H, Khatiwala Set al., 2013,

    Global ocean carbon uptake: magnitude, variability and trends

    , BIOGEOSCIENCES, Vol: 10, Pages: 1983-2000, ISSN: 1726-4170
  • Journal article
    Yver CE, Graven HD, Lucas DD, Cameron-Smith PJ, Keeling RF, Weiss RFet al., 2013,

    Evaluating transport in the WRF model along the California coast

    , ATMOSPHERIC CHEMISTRY AND PHYSICS, Vol: 13, Pages: 1837-1852, ISSN: 1680-7316
  • Journal article
    Papworth S, Milner-Gulland EJ, Slocombe K, 2013,

    Correction: Hunted Woolly Monkeys (Lagothrix poeppigii) Show Threat-Sensitive Responses to Human Presence.

    , PLoS One, Vol: 8

    [This corrects the article on p. e62000 in vol. 8.].
  • Conference paper
    Bell RE, McNeill LC, Nixon C, Henstock T, Bull J, Christodoulou D, Papatheodorou G, Taylor B, Ferentinos G, Sakellariou D, Lykousis V, Sachpazi M, Ford M, Goodliffe A, Leeder M, Gawthorpe G, Collier R, Clements Bet al., 2013,

    Basin evolution and the distribution of strain within the Gulf of Corinthrift

    , EGU General Assembly
  • Journal article
    Darbyshire FA, Eaton DW, Bastow ID, 2013,

    Seismic imaging of the lithosphere beneath Hudson Bay: Episodic growth of the Laurentian mantle keel

    , Earth and Planetary Science Letters, Vol: 373, Pages: 179-193
  • Journal article
    Howe C, Milner-Gulland EJ, 2013,

    Response to Cunningham, S. and King, L. (2013)

    , Animal Conservation, Vol: 16, Pages: 139-140
  • Journal article
    Troxler Y, Wu B, Marinescu M, Yufit V, Patel Y, Marquis AJ, Brandon NP, Offer GJ, Troxler Y, Wu B, Marinescu M, Yufit V, Patel Y, Marquis AJ, Brandon NP, Offer GJet al., 2013,

    The effect of thermal gradients on the performance of lithium ion batteries

    , Journal of Power Sources, Pages: accepted-accepted, ISSN: 0378-7753

    Abstract An experimental apparatus is described, in which Peltier elements are used for thermal control of lithium-ion cells under isothermal and non-isothermal conditions, i.e. to induce and maintain thermal gradients. Lithium-ion battery packs for automotive applications consist of hundreds of cells, and depending on the pack architecture, individual cells may experience non-uniform thermal boundary conditions. This paper presents the first study of the impact of artificially induced thermal gradients on cell performance. The charge transfer resistance of a 4.8 Ah is verified to have a strong temperature dependence following the Arrhenius law. Thermal cycling of the cell, combined with slow rate cyclic voltammetry, allows to rapidly identify phase transitions in electrodes, due to the thermal effect of entropy changes. A cell with a temperature gradient maintained across is found to have a lower impedance than one held at the theoretical average temperature. This feature is attributed to details of the inner structure of the cell, and to the non-linear temperature dependence of the charge transfer resistance.
  • Conference paper
    Markall GR, Rathgeber F, Mitchell L, Loriant N, Bertolli C, Kelly PHJet al., 2013,

    Performance-Portable Finite Element Assembly Using PyOP2 and FEniCS

    , International Supercomputing Conference (ISC), Publisher: Springer, Pages: 279-289, ISSN: 0302-9743

    We describe a toolchain that provides a fully automated compilation pathway from a finite element domain-specific language to low-level code for multicore and GPGPU platforms. We demonstrate that the generated code exceeds the performance of the best available alternatives, without requiring manual tuning or modification of the generated code. The toolchain can easily be integrated with existing finite element solvers, providing a means to add performance portable methods without having to rebuild an entire complex implementation from scratch.
  • Journal article
    Ferguson DJ, Maclennan J, Bastow ID, Pyle D, Jones SM, Keir D, Blundy DJ, Plank T, Yirgu Get al., 2013,

    Melting during late-stage rifting in Afar is hot and deep

    , Nature, Vol: 499, Pages: 70-74, ISSN: 0028-0836

    Investigations of a variety of continental rifts and margins worldwide have revealed that a considerable volume of melt can intrude into the crust during continental breakup(1-8), modifying its composition and thermal structure. However, it is unclear whether the cause of voluminous melt production at volcanic rifts is primarily increased mantle temperature or plate thinning(1,2,8-12). Also disputed is the extent to which plate stretching or thinning is uniform or varies with depth with the entire continental lithospheric mantle potentially being removed before plate rupture(13-16). Here we show that the extensive magmatism during rifting along the southern Red Sea rift in Afar, a unique region of sub-aerial transition from continental to oceanic rifting, is driven by deep melting of hotter-than-normal asthenosphere. Petrogenetic modelling shows that melts are predominantly generated at depths greater than 80 kilometres, implying the existence of a thick upper thermo-mechanical boundary layer in a rift system approaching the point of plate rupture. Numerical modelling of rift development shows that when breakup occurs at the slow extension rates observed in Afar, the survival of a thick plate is an inevitable consequence of conductive cooling of the lithosphere, even when the underlying asthenosphere is hot. Sustained magmatic activity during rifting in Afar thus requires persistently high mantle temperatures, which would allow melting at high pressure beneath the thick plate. If extensive plate thinning does occur during breakup it must do so abruptly at a late stage, immediately before the formation of the new ocean basin(16).
  • Report
    McIntyre N, Ballard C, Park JS, Henshaw A, Pagella T, Dangerfield S, Ewen J, Bulygina N, Marshall M, Reynolds B, Wheater H, O’Donnell G, Jackson B, O’Connell E, Thorne C, Cluckie I, Sinclair Fet al., 2012,

    Land use management effects on flood flows – guidance on prediction
  • Journal article
    Tong D, Trusler JPM, Maitland GC, Gibbins J, Fennell PSet al., 2012,

    Solubility of carbon dioxide in aqueous solution of monoethanolamine or 2-amino-2-methyl-1-propanol: Experimental measurements and modelling

    , International Journal of Greenhouse Gas Control, Vol: 6, Pages: 37-47

    Despite the importance of the accurate measurement of vapour–liquid equilibria (VLE) data, the reported values, even for well-studied systems such as MEA–H2O–CO2, are scattered. This work centres on the development of an experimental method to measure accurately the VLE of various aqueous amine systems. A static-analytic type of VLE apparatus has been constructed and employed to measure the VLE of CO2 in aqueous monoethanolamine and 2-amino-2-methyl-1-propanol. Gas chromatography was used to analyse the liquid phase compositions. The setup has been validated against literature data for 30 mass% MEA (monoethanolamine) at T = 313 and 393 K and was shown to be capable of generating reliable and repeatable data. New measurements for 30 mass% aqueous AMP (2-amino-2-methyl-1-propanol) solutions are also presented at temperatures between 313 and 393 K and a total pressure range of 23–983 kPa. A quasi-chemical model has been employed to interpret the experimental data for the MEA–H2O–CO2 and AMP–H2O–CO2 systems. The average absolute deviation (ΔAAD) between model prediction and experimental data is within 7%.

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