Now showing items 65-84 of 653

  • Building a traceable climate model hierarchy with multi-level emulators 

    Giang T. Tran; Kevin I. C. Oliver; András Sóbester; David J. J. Toal; Philip B. Holden; Robert Marsh; Challenor, PG; Neil R. Edwards (Copernicus Publications, 2016-04-18)
    To study climate change on multi-millennial timescales or to explore a model's parameter space, efficient models with simplified and parameterised processes are required. However, the reduction in explicitly modelled ...
  • A Ca2+-based computational model for NMDA receptor-dependent synaptic plasticity at individual post-synaptic spines in the Hippocampus. 

    Rackham, OJ; Tsaneva-Atanasova, Krasimira; Ganesh, A; Mellor, JR (Frontiers, 2010)
    Associative synaptic plasticity is synapse specific and requires coincident activity in pre-synaptic and post-synaptic neurons to activate NMDA receptors (NMDARs). The resultant Ca(2+) influx is the critical trigger for ...
  • Calcium-Induced Calcium Release during Action Potential Firing in Developing Inner Hair Cells 

    Iosub, Radu; Avitabile, Daniele; Grant, Lisa; Tsaneva-Atanasova, Krasimira; Kennedy, Helen J. (Biophysical Society / Elsevier, 2015)
    In the mature auditory system, inner hair cells (IHCs) convert sound-induced vibrations into electrical signals that are relayed to the central nervous system via auditory afferents. Before the cochlea can respond to normal ...
  • Can correcting feature location in simulated mean climate improve agreement on projected changes? 

    Levy, AAL; Ingram, W; Jenkinson, M; Huntingford, C; Lambert, FH; Allen, M (American Geophysical Union, 2013-01-17)
    To the extent that deficiencies in GCM simulations of precipitation are due to persistent errors of location and timing, correcting the spatial and seasonal distribution of features would provide a physically based improvement ...
  • The carbon cycle in Mexico: past, present and future of C stocks and fluxes 

    Murray-Tortarolo, G; Friedlingstein, P; Sitch, S; Jaramillo, VJ; Murguia-Flores, F; Anav, A; Liu, Y; Arneth, A; Arvanitis, A; Harper, A; Jain, A; Kato, E; Koven, C; Poulter, B; Stocker, BD; Wiltshire, A; Zaehle, S; Zeng, N (European Geosciences Union (EGU), 2016-01-15)
    We modeled the carbon (C) cycle in Mexico with a process-based approach. We used different available products (satellite data, field measurements, models and flux towers) to estimate C stocks and fluxes in the country at ...
  • The carbon cycle response to ENSO: a coupled climate–carbon cycle model study 

    Jones, Chris D.; Collins, Matthew; Cox, Peter M.; Spall, Steven A. (American Meteorological Society, 2001)
    There is significant interannual variability in the atmospheric concentration of carbon dioxide (CO2) even when the effect of anthropogenic sources has been accounted for. This variability is well correlated with the El ...
  • A case study of the radiative forcing of persistent contrails evolving into contrail-induced cirrus 

    Haywood, James M.; Allan, Richard P.; Bornemann, Jorge; Forster, Piers M.; Francis, Peter N.; Milton, Sean; Radel, Gaby; Rap, Alexandru; Shine, Keith P.; Thorpe, Robert (American Geophysical Union (AGU), 2009)
    [1] The radiative forcing due to a distinct pattern of persistent contrails that form into contrail-induced cirrus near and over the UK is investigated in detail for a single case study during March 2009. The development ...
  • Caution needed when linking weather extremes to amplified planetary waves 

    Screen, James A.; Simmonds, Ian (National Academy of Sciences, 2013)
  • The central role of diminishing sea ice in recent Arctic temperature amplification 

    Screen, James A.; Simmonds, Ian (Nature Publishing Group, 2010)
    The rise in Arctic near-surface air temperatures has been almost twice as large as the global average in recent decades-a feature known as 'Arctic amplification'. Increased concentrations of atmospheric greenhouse gases ...
  • Chaos in symmetric phase oscillator networks 

    Bick, Christian; Timme, Marc; Paulikat, Danilo; Rathlev, Dirk; Ashwin, Peter (American Physical Society, 2011)
    Phase-coupled oscillators serve as paradigmatic models of networks of weakly interacting oscillatory units in physics and biology. The order parameter which quantifies synchronization so far has been found to be chaotic ...
  • Chaotic Weak Chimeras and their Persistence in Coupled Populations of Phase Oscillators 

    Bick, Christian; Ashwin, Peter (arXiv.org, 2015-09-29)
    Nontrivial collective behavior may emerge from the interactive dynamics of many oscillatory units. Chimera states are chaotic patterns of spatially localized coherent and incoherent oscillations. The recently-introduced ...
  • Characteristic matrices for linear periodic delay differential equations 

    Sieber, J.; Szalai, R. (2011)
    Szalai, Stépán, and Hogan [SIAM J. Sci. Comput., 28 (2006), pp. 1301–1317] gave a general construction for characteristic matrices for systems of linear delay differential equations with periodic coefficients. First, we ...
  • Chimera states in networks of phase oscillators: the case of two small populations 

    Panaggio, Mark J.; Abrams, Daniel M.; Ashwin, Peter; Laing, Carlo R. (Arxiv.org, 2015-08-12)
    Chimera states are dynamical patterns in networks of coupled oscillators in which regions of synchronous and asynchronous oscillation coexist. Although these states are typically observed in large ensembles of oscillators ...
  • Chloroplasts play a central role in plant defence and are targeted by pathogen effectors 

    de Torres, M; Littlejohn, George; Jayaraman, S; Studholme, David J.; Bailey, Trevor C.; Lawson, T; Delfino, L; Licht, D; Truman, W; Bölter, B; Mansfield, J; Tillich, M; Smirnoff, Nicholas; Grant, Murray (Nature Publishing Group, 2015-06-01)
    Microbe associated molecular pattern (MAMP) receptors in plants recognize MAMPs and activate basal defences; however a complete understanding of the molecular and physiological mechanisms conferring immunity remains elusive. ...
  • Classification of robust heteroclinic cycles for vector fields in R3 with symmetry 

    Hawker, David; Ashwin, Peter (Institute of Physics, 2005)
    We consider a classification of robust heteroclinic cycles in the positive octant of R3 under the action of the symmetry group (Z2)3. We introduce a coding system to represent different classes up to a topological equivalence, ...
  • Classification of wave regimes in excitable systems with linear cross diffusion 

    Tsyganov, M. A.; Biktashev, V. N. (American Physical Society, 2014)
    We consider principal properties of various wave regimes in two selected excitable systems with linear cross diffusion in one spatial dimension observed at different parameter values. This includes fixed-shape propagating ...
  • Climate impacts of geoengineering marine stratocumulus clouds 

    Jones, Andy; Haywood, James M.; Boucher, Olivier (American Geophysical Union (AGU), 2009)
    [1] Theoretical potential geoengineering solutions to the global warming problem have recently been proposed. Here, we present an idealized study of the climate response to deliberately seeding large-scale stratocumulus ...
  • Climate impacts of the southern annular mode simulated by the CMIP3 models 

    Karpechko, Alexey Yu; Gillett, Nathan P.; Marshall, Gareth J.; Screen, James A. (American Meteorological Society, 2009)
    The southern annular mode (SAM) has a well-established impact on climate in the Southern Hemisphere. The strongest response in surface air temperature (SAT) is observed in the Antarctic, but the SAM’s area of influence ...
  • Climate model response from the Geoengineering Model Intercomparison Project (GeoMIP) 

    Kravitz, B; Caldeira, K; Boucher, O; Robock, A; Rasch, PJ; Alterskjær, K; Karam, DB; Cole, JNS; Curry, CL; Haywood, JM; Irvine, PJ; Ji, D; Jones, A; Kristjánsson, JE; Lunt, DJ; Moore, JC; Niemeier, U; Schmidt, H; Schulz, M; Singh, B; Tilmes, S; Watanabe, S; Yang, S; Yoon, JH (American Geophysical Union, 2013-08-09)
    Solar geoengineering - deliberate reduction in the amount of solar radiation retained by the Earth - has been proposed as a means of counteracting some of the climatic effects of anthropogenic greenhouse gas emissions. We ...
  • Climate predictions: the influence of nonlinearity and randomness 

    Thompson, J.M.; Sieber, J. (Royal Society, 2012)
    The current threat of global warming and the public demand for confident projections of climate change pose the ultimate challenge to science: predicting the future behaviour of a system of such overwhelming complexity as ...