Now showing items 111-130 of 791

  • Climate simulations for 1880-2003 with GISS modelE 

    Hansen, J; Sato, M; Ruedy, R; Kharecha, P; Lacis, A; Miller, R; Nazarenko, L; Lo, K; Schmidt, GA; Russell, G; Aleinov, I; Bauer, S; Baum, E; Cairns, B; Canuto, V; Chandler, M; Cheng, Y; Cohen, A; Genio, AD; Faluvegi, G; Fleming, E; Friend, A; Hall, T; Jackman, C; Jonas, J; Kelley, M; Kiang, NY; Koch, D; Labow, G; Lerner, J; Menon, S; Novakov, T; Oinas, V; Perlwitz, J; Perlwitz, J; Rind, D; Romanou, A; Schmunk, R; Shindell, D; Stone, P; Sun, S; Streets, D; Tausnev, N; Thresher, D; Unger, N; Yao, M; Zhang, S (Springer Verlag (Germany), 2007)
    We carry out climate simulations for 1880-2003 with GISS modelE driven by ten measured or estimated climate forcings. An ensemble of climate model runs is carried out for each forcing acting individually and for all forcing ...
  • Climate tipping as a noisy bifurcation: a predictive technique 

    Thompson, J.M.; Sieber, J. (Oxford University Press for Institute of Mathematics and its Applications, 2011)
    It is often known, from modelling studies, that a certain mode of climate tipping (of the oceanic thermohaline circulation, for example) is governed by an underlying fold bifurcation. For such a case, we present a scheme ...
  • Climate-Ozone Connections 

    Baldwin, M; Dameris, M (World Meteorological Organization, 2006)
  • Climate–carbon cycle feedback analysis: results from the C4MIP model intercomparison 

    Friedlingstein, P; Cox, Peter M.; Betts, R. A.; Bopp, L.; Von Bloh, W.; Brovkin, Victor; Cadule, P.; Doney, S.; Eby, M.; Fung, I.; Bala, G.; John, J.; Jones, Chris D.; Joos, F.; Kato, T.; Kawamiya, M.; Knorr, W.; Lindsay, K.; Matthews, H. D.; Raddatz, T.; Rayner, P.; Reick, C.; Roeckner, E.; Schnitzler, K.-G.; Schnur, R.; Strassmann, K.; Weaver, A. J.; Yoshikawa, C.; Zeng, N. (American Meteorological Society, 2006)
    Eleven coupled climate-carbon cycle models used a common protocol to study the coupling between climate change and the carbon cycle. The models were forced by historical emissions and the Intergovernmental Panel on Climate ...
  • Climatic impacts of land-use change due to crop yield increases and a universal carbon tax from a scenario model 

    Davies-Barnard, Taraka; Valdes, P.J.; Singarayer, J.S.; Jones, Chris D. (American Meteorological Society, 2014-02)
    Future land cover will have a significant impact on climate and is strongly influenced by the extent of agricultural land use. Differing assumptions of crop yield increase and carbon pricing mitigation strategies affect ...
  • Climatic impacts of stratospheric geoengineering with sulfate, black carbon and titania injection 

    Jones, AC; Haywood, James M.; Jones, A (European Geosciences Union (EGU) / Copernicus Publications, 2015-11-03)
    In this paper, we examine the potential climatic effects of geoengineering by sulfate, black carbon and titania injection against a baseline RCP8.5 scenario. We use the HadGEM2-CCS model to simulate scenarios in which the ...
  • Cluster observations of the mid-altitude cusp under strong northward Interplanetary magnetic field 

    Hu, Renyu; Bogdanova, Yulia V.; Owen, Christopher J.; Foullon, Claire; Fazakerley, Andrew; Reme, Henri (American Geophysical Union (AGU), 2008)
    We report on a multispacecraft cusp observation lasting more than 100 min. We determine the cusp boundary motion and reveal the effect on the cusp size of the interplanetary magnetic field (IMF) changing from southward to ...
  • Collective learning and optimal consensus decisions in social animal groups. 

    Kao, AB; Miller, N; Torney, C; Hartnett, A; Couzin, ID (Public Library of Science, 2014-08-07)
    Learning has been studied extensively in the context of isolated individuals. However, many organisms are social and consequently make decisions both individually and as part of a collective. Reaching consensus necessarily ...
  • Comparing the degree of land–atmosphere interaction in four atmospheric general circulation models 

    Koster, Randal D.; Dirmeyer, Paul A.; Hahmann, Andrea N.; Ijpelaar, Ruben; Tyahla, Lori; Cox, Peter M.; Suarez, Max J. (American Meteorological Society, 2002)
    The strength of the coupling between the land and the atmosphere, which controls, for example, the degree to which precipitation-induced soil moisture anomalies affect the overlying atmosphere and thereby the subsequent ...
  • Comparing the effects of calibration and climate errors on a statistical crop model and a process-based crop model 

    Watson, J; Challinor, AJ; Fricker, Thomas E.; Ferro, Christopher A.T. (Springer Verlag (Germany), 2014-10-15)
    Understanding the relationship between climate and crop productivity is a key component of projections of future food production, and hence assessments of food security. Climate models and crop yield datasets have errors, ...
  • Comparison between overconvergent de Rham-Witt and crystalline cohomology for projective and smooth varieties 

    Langer, Andreas; Zink, Thomas (Wiley-VCH Verlag, 2015-04-27)
    We prove that for a projective and smooth variety the hypercohomology of the overconvergent de Rham-Witt complex is canonically isomorphic to crystalline cohomology
  • A comparison of logarithmic overconvergent de Rham-Witt and log-crystalline cohomology for projective smooth varieties with normal crossing divisor 

    Langer, Andreas; Zink, Thomas (Seminario Matematico della Università di Padova, 2016)
    no abstract available
  • A comparison of statistical emulation methodologies for multi-wave calibration of environmental models 

    Salter, JM; Williamson, D (Wiley, 2016-09-12)
    Expensive computer codes, particularly those used simulating environmental or geological processes such as climate models, require calibration (sometimes called tuning). When calibrating expensive simulators using uncertainty ...
  • Comparison of surrogate-based uncertainty quantification methods for computationally expensive simulators 

    Owen, NE; Challenor, P; Menon, PP; Bennani, S (arXiv.org, 2017-01-16)
    Polynomial chaos and Gaussian process emulation are methods for surrogate-based uncertainty quantification, and have been developed independently in their respective communities over the last 25 years. Despite tackling ...
  • Comparison of the Bayesian and Randomised Decision Tree Ensembles within an Uncertainty Envelope Technique 

    Schetinin, Vitaly; Fieldsend, Jonathan E.; Partridge, Derek; Krzanowski, Wojtek J.; Everson, Richard M.; Bailey, Trevor C.; Hernandez, Adolfo (Springer, 2006)
    Multiple Classifier Systems (MCSs) allow evaluation of the uncertainty of classification outcomes that is of crucial importance for safety critical applications. The uncertainty of classification is determined by a trade-off ...
  • Compensatory water effects link yearly global land CO2 sink changes to temperature. 

    Jung, M; Reichstein, M; Schwalm, CR; Huntingford, C; Sitch, S; Ahlström, A; Arneth, A; Camps-Valls, G; Ciais, P; Friedlingstein, P; Gans, F; Ichii, K; Jain, AK; Kato, E; Papale, D; Poulter, B; Raduly, B; Rödenbeck, C; Tramontana, G; Viovy, N; Wang, Y-P; Weber, U; Zaehle, S; Zeng, N (Nature Publishing Group, 2017-01-16)
    Large interannual variations in the measured growth rate of atmospheric carbon dioxide (CO2) originate primarily from fluctuations in carbon uptake by land ecosystems. It remains uncertain, however, to what extent temperature ...
  • The competitive nature of STAT complex formation drives phenotype switching of T cells 

    Sadreev, II; Chen, MZQ; Umezawa, Y; Biktashev, VN; Kemper, C; Salakhieva, DV; Welsh, GI; Kotov, NV (arXiv.org, 2017)
    Signal transducers and activators of transcription (STATs) are key molecular determinants of T cell fate and effector function. A number of inflammatory diseases are characterized by an altered balance of T cell phenotypes ...
  • Complementary approaches to understanding the plant circadian clock 

    Akman, OE; Guerriero, ML; Loewe, L; Troein, C (Open Publishing Association, 2010-02-26)
    Circadian clocks are oscillatory genetic networks that help organisms adapt to the 24-hour day/night cycle. The clock of the green alga Ostreococcus tauri is the simplest plant clock discovered so far. Its many advantages ...
  • Computation of the drift velocity of spiral waves using response functions 

    Biktasheva, I. V.; Barkley, D.; Biktashev, V. N.; Foulkes, A. J. (American Physical Society, 2010)
    Rotating spiral waves are a form of self-organization observed in spatially extended systems of physical, chemical, and biological nature. In the presence of a small perturbation, the spiral wave's center of rotation and ...
  • Computation of the response functions of spiral waves in active media 

    Biktasheva, I. V.; Barkley, D.; Biktashev, V. N.; Bordyugov, G. V.; Foulkes, A. J. (American Physical Society, 2009)
    Rotating spiral waves are a form of self-organization observed in spatially extended systems of physical, chemical, and biological natures. A small perturbation causes gradual change in spatial location of spiral's rotation ...