Browsing Mathematics by Title
Now showing items 111130 of 1081

Can correcting feature location in simulated mean climate improve agreement on projected changes?
(American Geophysical Union, 20130117)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 ... 
Can reducing black carbon and methane below RCP2.6 levels keep global warming below 1.5C?
(Wiley, 20180425)Methane and black carbon aerosols have been identified as exerting the two strongest positive radiative forcings after carbon dioxide and therefore drastic reductions in these atmospheric constituents could potentially ... 
The carbon cycle in Mexico: past, present and future of C stocks and fluxes
(European Geosciences Union (EGU), 20160115)We modeled the carbon (C) cycle in Mexico with a processbased 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
(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 contrailinduced cirrus
(American Geophysical Union (AGU), 2009)[1] The radiative forcing due to a distinct pattern of persistent contrails that form into contrailinduced 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
(National Academy of Sciences, 2013) 
The central role of diminishing sea ice in recent Arctic temperature amplification
(Nature Publishing Group, 2010)The rise in Arctic nearsurface air temperatures has been almost twice as large as the global average in recent decadesa feature known as 'Arctic amplification'. Increased concentrations of atmospheric greenhouse gases ... 
Challenges and opportunities for improved understanding of regional climate dynamics
(Springer Nature, 20180129)Dynamical processes in the atmosphere and ocean are central to determining the largescale drivers of regional climate change, yet their predictive understanding is poor. Here, we identify three frontline challenges in ... 
Challenges in dengue research: A computational perspective
(Wiley, 20171105)The dengue virus is now the most widespread arbovirus affecting human populations, causing significant economic and social impact in South America and SouthEast Asia. Increasing urbanization and globalization, coupled ... 
Chaos in generically coupled phase oscillator networks with nonpairwise interactions
(arXiv.org, 206)The KuramotoSakaguchi system of coupled phase oscillators, where interaction between oscillators is determined by a single harmonic of phase differences of pairs of oscillators, has very simple emergent dynamics in the ... 
Chaos in symmetric phase oscillator networks
(American Physical Society, 2011)Phasecoupled 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 and nonchaotic response to quasiperiodic forcing: limits to predictability of ice ages paced by Milankovitch forcing
(Oxford University Press (OUP), 20180508)It is well known that periodic forcing of a nonlinear system, even of a twodimensional autonomous system, can produce chaotic responses with sensitive dependence on initial conditions if the forcing induces sufficient ... 
Chaotic multiobjective optimization based design of fractional order PIλDμ controller in AVR system
(Elsevier, 20120704)In this paper, a fractional order (FO) PI{\lambda}D\mu controller is designed to take care of various contradictory objective functions for an Automatic Voltage Regulator (AVR) system. An improved evolutionary Nondominated ... 
Chaotic Weak Chimeras and their Persistence in Coupled Populations of Phase Oscillators
(arXiv.org, 20150929)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 recentlyintroduced ... 
Characteristic matrices for linear periodic delay differential equations
(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
(Arxiv.org, 20150812)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 ... 
Chimera states in two populations with heterogeneous phaselag
(AIP Publishing, 201609)The simplest network of coupled phaseoscillators exhibiting chimera states is given by two populations with disparate intra and interpopulation coupling strengths. We explore the effects of heterogeneous coupling ... 
Chloroplasts play a central role in plant defence and are targeted by pathogen effectors
(Nature Publishing Group, 20150601)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. ... 
Choice of function spaces for thermodynamic variables in mixed finite element methods
(Wiley / Royal Meteorological Society, 20180223)We study the dispersion properties of three choices for the buoyancy space in a mixed finite element discretization of geophysical fluid flow equations. The problem is analogous to that of the staggering of the buoyancy ... 
Classification framework for partially observed dynamical systems
(American Physical Society, 20170414)We present a general framework for classifying partially observed dynamical systems based on the idea of learning in the model space. In contrast to the existing approaches using model point estimates to represent ...