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Arbeider i CRIStin


  • Løvsletten, Ola; Rypdal, Martin wibe. Statistics of Regional Surface Temperatures after 1900: Long-Range versus Short-Range Dependence and Significance of Warming Trends. Journal of Climate 2016; Volum 29 (11). ISSN 0894-8755.s 4057 - 4068.s doi: 10.1175/JCLI-D-15-0437.1.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Late Quaternary temperature variability described as abrupt transitions on a 1/f noise background. Earth System Dynamics 2016; Volum 7. ISSN 2190-4979.s 281 - 293.s doi: 10.5194/esd-7-281-2016.

  • Rypdal, Martin wibe. Early-Warning Signals for the onsets of Greenland Interstadials and the Younger Dryas-Preboreal transition. Journal of Climate 2016. ISSN 0894-8755.s doi: 10.1175/JCLI-D-15-0828.1.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Comment on "Scaling regimes and linear/nonlinear responses of last millennium climate to volcanic and solar forcing" by S. Lovejoy and C. Varotsos. Earth System Dynamics Discussions 2016. ISSN 1866-3591.s doi: 10.5194/esd-2016-10.

  • Rypdal, Kristoffer; Rypdal, Martin wibe; Fredriksen, Hege-Beate. Spatiotemporal long-range persistence in earth's temperature field: Analysis of stochastic-diffusive energy balance models. Journal of Climate 2015; Volum 28 (21). ISSN 0894-8755.s 8379 - 8395.s doi: 10.1175/JCLI-D-15-0183.1.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Late quaternary temperature variability described as abrupt transitions on a 1/f noise background. Earth System Dynamics Discussions 2015; Volum 6. ISSN 1866-3591.s 2323 - 2337.s doi: 10.5194/esdd-2323-2015.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Long-memory effects in linear response models of Earth's temperature and implications for future global warming. Journal of Climate 2014; Volum 27 (14). ISSN 0894-8755.s 5240 - 5258.s doi: 10.1175/JCLI-D-13-00296.1.

  • Østvand, Lene; Rypdal, Kristoffer; Rypdal, Martin wibe. Statistical significance of rising and oscillatory trends in global ocean and land temperature in the past 160 years. Earth System Dynamics Discussions 2014; Volum 5. ISSN 1866-3591.s 327 - 362.s doi: doi:10.5194/esdd-5-327-2014.

  • Østvand, Lene; Nilsen, Tine; Rypdal, Kristoffer; Divine, Dmitry, V.; Rypdal, Martin wibe. Long-range memory in internal and forced dynamics of millennium-long climate model simulations. Earth System Dynamics 2014; Volum 5 (2). ISSN 2190-4979.s 295 - 308.s doi: 10.5194/esd-5-295-2014.

  • Rypdal, Martin wibe; Sirnes, Espen; Løvsletten, Ola; Rypdal, Kristoffer. Assessing market uncertainty by means of a time-varying intermittency parameter for asset price fluctuations. Physica A: Statistical Mechanics and its Applications 2013. ISSN 0378-4371.

  • Rypdal, Kristoffer; Østvand, Lene; Rypdal, Martin wibe. Long-range memory in Earth's surface temperature on time scales from months to centuries. Journal of Geophysical Research - Atmospheres 2013; Volum 118 (13). ISSN 2169-897X.s 7046 - 7062.s doi: 10.1002/jgrd.50399.

  • Rypdal, Martin wibe; Løvsletten, Ola. Modeling electricity spot prices using mean-reverting multifractal processes. Physica A: Statistical Mechanics and its Applications 2013; Volum 392 (1). ISSN 0378-4371.s 194 - 207.s doi: 10.1016/j.physa.2012.08.004.

  • Løvsletten, Ola; Rypdal, Martin wibe. Approximated maximum likelihood estimation in multifractal random walks. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics 2012; Volum 85 (4). ISSN 1063-651X.s doi: 10.1103/PhysRevE.85.046705.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Is there long-range memory in solar activity on timescales shorter than the sunspot period?. Journal of Geophysical Research - Space Physics 2012; Volum 117. ISSN 2169-9380.s doi: 10.1029/2011JA017283.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Stochastic properties of solar activity proxies. Astrophysics and Space Science Proceedings 2012; Volum 33. ISSN 1570-6591.s 227 - 232.s doi: 10.1007/978-3-642-30442-2_25.

  • Hall, Chris; Rypdal, Kristoffer; Rypdal, Martin wibe. The E region at 69 degrees N, 19 degrees E: Trends, significances, and detectability. Journal of Geophysical Research - Space Physics 2011; Volum 116. ISSN 2169-9380.s A05309 - .s doi: 10.1029/2011JA016431.

  • Rypdal, Kristoffer; Klumov, B.; Kozelov, Boris; Kube, Ralph; Rypdal, Martin wibe. Exploring the Analogy Between Freezing of a 2D Yukawa Liquid and 2D Decaying Turbulence in Fluids. AIP Conference Proceedings 2011; Volum 1397 (1). ISSN 0094-243X.s 72 - 77.s doi: 10.1063/1.3659743.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Discerning a linkage between solar wind turbulence and ionospheric dissipation by a method of confined multifractal motions. Journal of Geophysical Research - Space Physics 2011; Volum 226. ISSN 2169-9380.s A02202 - .s doi: 10.1029/2010JA015907.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Stochastic modeling of the AE index and its relation to fluctuations in B-z of the IMF on time scales shorter than substorm duration. Journal of Geophysical Research - Space Physics 2010; Volum 115. ISSN 2169-9380.s doi: 10.1029/2010JA015463.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Rypdal and Rypdal reply. A Reply to the Comment by Nicola Scafetta and Bruce J. West. Physical Review Letters 2010; Volum 105 (21). ISSN 0031-9007.s 219802 - .s doi: 10.1103/PhysRevLett.105.21980.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Testing Hypotheses about Sun-Climate Complexity Linking. Physical Review Letters 2010; Volum 104 (12). ISSN 0031-9007.s doi: 10.1103/PhysRevLett.104.128501.

  • Rypdal, Kristoffer; Kozelov, Boris V; Ratynskaia, Svetlana; Klumov, B.; Knapek, C.; Rypdal, Martin wibe. Scale-free vortex cascade emerging from random forcing in a strongly coupled system. New Journal of Physics 2008; Volum 10. ISSN 1367-2630.s 093018 - .s doi: 10.1088/1367-2630/10/9/093018.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Modeling temporal fluctuations in avalanching systems. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics 2008; Volum 78. ISSN 1063-651X.s 051127/1 - 11.s doi: 10.1103/PhysRevE.78.051127.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. A stochastic theory for temporal fluctuations in self-organized critical systems. New Journal of Physics 2008; Volum 10. ISSN 1367-2630.s 123010/1 - 11.s doi: 10.1088/1367-2630/10/12/123010.

  • Rypdal, Kristoffer; Rypdal, Martin wibe; Zivkovic, Tatjana; Kozelov, Boris V. Complexity in astro and geospace systems: the turbulence versus SOC controversy. AIP Conference Proceedings 2007; Volum 932. ISSN 0094-243X.s 203 - 208.

  • Kruglikov, Boris Serafimovich; Rypdal, Martin Wibe. Dynamics and entropy in the Zhang model of self-organized criticality. Journal of statistical physics 2006; Volum 122. ISSN 0022-4715.

  • Kruglikov, Boris Serafimovich; Rypdal, Martin Wibe. Entropy via multiplicity. Discrete and Continuous Dynamical Systems 2006; Volum 16. ISSN 1078-0947.s 395 - 410.

  • Kruglikov, Boris Serafimovich; Rypdal, Martin Wibe. A piece-wise affine contracting map with positive entropy. Discrete and Continuous Dynamical Systems 2006; Volum 16. ISSN 1078-0947.s 393 - 394.

  • Fredriksen, Hege-Beate; Rypdal, Martin wibe; Rypdal, Kristoffer. How can long-range memory in surface temperatures be produced?. ResClim All Staff Meeting 2016 2016-03-02 - 2016-03-04 2016.

  • Fredriksen, Hege-Beate; Rypdal, Martin wibe; Rypdal, Kristoffer. The potential of explaining low-frequency temperature variability by a linear model. EGU General Assembly 2016 2016-04-18 - 2016-04-22 2016.

  • Nilsen, Tine; Rypdal, Kristoffer; Fredriksen, Hege-Beate; Rypdal, Martin wibe; Løvsletten, Ola. Is there a break in scaling on centennial time scale in Holocene temperature records. EGU General Assembly 2015-04-12 - 2015-04-17 2015.

  • Rypdal, Kristoffer; Rypdal, Martin wibe; Holm, Sverre. Detection and attribution: how is the solar signal identified and distinguished from the response to other forcings?. EDP Sciences 2015 ISBN 978-2-7598-1733-7.s 204 - 209.s doi: 10.1051/978-2-7598-1733.c124.

  • Fredriksen, Hege-Beate; Løvsletten, Ola; Rypdal, Martin wibe; Rypdal, Kristoffer. The statistical differences between the gridded temperature datasets, and their implications for stochastic modelling. Resclim All Staff Meeting 2015 2015-03-03 - 2015-03-07 2015.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Modeled impact of total solar irradiance (TSI) forcing. EDP Sciences 2015 ISBN 978-2-7598-1733-7.s 289 - 291.s doi: 10.1051/978-2-7598-1733.c135.

  • Løvsletten, Ola; Rypdal, Martin wibe; Rypdal, Kristoffer; Fredriksen, Hege-Beate. Statistics of regional surface temperatures post year 1900. Long-range versus short-range dependence, and significance of warming trends.. European Geosciences Union General Assembly 2015 2015-04-13 - 2015-04-17 2015.

  • Fredriksen, Hege-Beate; Rypdal, Kristoffer; Rypdal, Martin wibe. Spatiotemporal correlation structure of the Earth's surface temperature. EGU General Assembly 2015 2015-04-12 - 2015-04-17 2015.

  • Rypdal, Kristoffer; Rypdal, Martin wibe; Fredriksen, Hege-Beate. Spatiotemporal correlations in Earth’s temperature field from fractional stochastic-diffusive energy balance models. EGU General Assembly 2015 2015-04-12 - 2015-04-17 2015.

  • Rypdal, Martin wibe; Rypdal, Kristoffer; Fredriksen, Hege-Beate. Are the scaling properties of instrumental and long-term proxy temperature records consistent with a simple energy balance model?. EGU General Assembly 2015 2015-04-12 - 2015-05-17 2015.

  • Rypdal, Kristoffer; Østvand, Lene; Rypdal, Martin wibe. Statistical significance of surface temperature trends in the past 160 years. ResClim All Staff Meeting 2014 2014-03-16 - 2014-03-21 2014.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. A Delayed Response. International Innovation 2014; Volum 151. ISSN 2054-6254.s 122 - 124.

  • Rypdal, Kristoffer; Rypdal, Martin wibe; Nilsen, Tine; Fredriksen, Hege-Beate. The Nature of the Macroweather-Climate Scaling Break in the Holocene. AGU Fall meeting 2014 2014-12-15 - 2014-12-19 2014.

  • Fredriksen, Hege-Beate; Rypdal, Kristoffer; Rypdal, Martin wibe. Why does global surface temperature exhibit more persistent temporal scaling than local temperatures?. European geosciences union general assembly 2014 2014-04-27 - 2014-05-02 2014.

  • Løvsletten, Ola; Rypdal, Martin wibe. From Bachelier’s Brownian motion to Mandelbrot’s multifractal model of asset returns and beyond. Physical Origins of Correlated Extreme Events 2014-06-11 - 2014-06-13 2014.

  • Fredriksen, Hege-Beate; Løvsletten, Ola; Rypdal, Martin wibe; Rypdal, Kristoffer. The statistical differences between the gridded temperature datasets, and their implications for stochastic modelling. American geophysical union fall meeting 2014 2014-12-15 - 2014-12-19 2014.

  • Løvsletten, Ola; Rypdal, Martin wibe; Rypdal, Kristoffer; Fredriksen, Hege-Beate. Significance-testing of trends: Long-range dependence and model selection. Physical origins of correlated extreme events 2014-06-11 - 2014-06-13 2014.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Estimation of specific climate responses from \\ reconstructions of climate forcing and global temperature. EGU General Assembly 2013 2013-04-07 - 2013-04-12 2013.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. “Predicting” northern hemisphere temperature for the previous millennium based on a parametric stochastic-dynamic model trained on the instrumental global temperature and forcing records. AGU Fall meeting 2013 2013-12-09 - 2013-12-13 2013.

  • Østvand, Lene; Rypdal, Kristoffer; Rypdal, Martin wibe. The performance of wavelet-variance analysis as a method for estimating long-range memory in climatic temperature record. European Geosciences Union General Assembly 2013-04-07 - 2013-04-12 2013.

  • Fredriksen, Hege-Beate; Rypdal, Kristoffer; Rypdal, Martin wibe; Løvsletten, Ola. Spatial scale dependence of long-range memory properties of Earth surface temperature. American Geophysical Union Fall Meeting 2013 2013-12-09 - 2013-12-13 2013.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Is equilibrium climate sensitivity the best predictor for future global warming?. AGU Fall meeting 2013 2013-12-09 - 2013-12-13 2013.

  • Østvand, Lene; Nilsen, Tine; Rypdal, Kristoffer; Rypdal, Martin wibe. Long range memory and trends in model data. AGU Fall Meeting 2013-12-09 - 2013-12-13 2013.

  • Fredriksen, Hege-Beate; Rypdal, Kristoffer; Rypdal, Martin wibe. Long-range memory in Earth surface temperature: spatial scale dependence and land-sea differences. European Geosciences Union General assembly 2013 2013-04-07 - 2013-04-12 2013.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Long-range persistence in the global mean surface temperature and the global warming "time bomb". EGU General Assembly 2012 (Geophysical Research Abstracts Vol. 14, EGU2012-3338, 2012) (fulltekst) 2012-04-22 - 2012-04-27 2012.

  • Østvand, Lene; Løvsletten, Ola; Rypdal, Martin wibe; Rypdal, Kristoffer. Maximum Likelihood Estimates of trend- and memory-coefficients in climatic time series. European Geosciences Union General Assembly 2012 2012-04-22 - 2012-04-27 2012.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. A strategy for estimation of specific climate sensitivities from SSI reconstructions and paleoclimatic records. European Space Weather Week 2012-11-05 - 2012-11-10 2012.

  • Rypdal, Martin wibe; Rypdal, Kristoffer; Østvand, Lene; Løvsletten, Ola. Stochastic modeling of global temperature. Workshop on Complexity and Climates (fulltekst) 2012-03-26 - 2012-03-30 2012.

  • Østvand, Lene; Løvsletten, Ola; Rypdal, Martin wibe; Rypdal, Kristoffer. Maximum Likelihood Estimates of trend- and memory-coefficients in climatic time series. NordForsk/TOSCA Workshop on Complexity and Climates 2012-03-27 - 2012-03-30 2012.

  • Løvsletten, Ola; Rypdal, Martin wibe. Multifractal inference. Aggregation, Inference and Rare Events in the Natural and Socio-economic Sciences 2012-05-17 - 2012-05-18 2012.

  • Løvsletten, Ola; Rypdal, Martin wibe. Multifractal modelling in finance. The 16th Norwegian Statistical Meeting 2011-06-14 - 2011-06-17 2011.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Stochastic properties of solar activity proxies on time scales shorter than the sunspot period. International astrphysics forum 2011 2011-06-20 - 2011-06-24 2011.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Detection of climatic regime shifts from time-series data. Arctic Frontiers 2011-01-26 - 2011-01-28 2011.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Memory in stochastic component and multi-decadal trends of solar activity. European Geoscience Union General Assembly 2011-04-03 - 2011-04-08 2011.

  • Østvand, Lene; Rypdal, Kristoffer; Rypdal, Martin wibe. Universal Hurst exponent of local and global Earth temperature records?. European Geosciences Union General Assembly 2011 2011-04-03 - 2011-04-08 2011.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Comment on "Testing Hypotheses about Sun-Climate Complexity Linking" Reply. Physical Review Letters 2010; Volum 105 (21). ISSN 0031-9007.s doi: 10.1103/PhysRevLett.105.219802.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Er det en kompleksitetskobling mellom solaktiviteteten og jordens klima?. Birkeland-seminaret 2010-01-14 - 2010-01-14 2010.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. Discerning the structure of small-scale intermittency in plasma turbulence by a method of confined multifractal motions. Joint EU-UA TTF Workshop 2010-09-07 - 2010-09-10 2010.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Trends from Levy-walk statistics in solar activity – a link to multidecadal and secular trends in Earth climate?. AGU Fall Meeting 2010 2010-12-12 - 2010-12-18 2010.

  • Løvsletten, Ola; Rypdal, Martin wibe. Multifractal modelling of short-term interest rates. The Birkeland Seminar 2010-12-10 - 2010-12-10 2010.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Multifractal analysis of experimental time series - does it disclose or obscure the physics?. Workshop on "Nonlinear dynamics and structure formation in complex systems: challenges and open problems for modern physics" (data) 2009-09-21 - 2009-09-22 2009.

  • Rypdal, Kristoffer; Rypdal, Martin wibe; Zivkovic, Tatjana. Stochastic modeling of fluctuations in the solar wind - magnetospheric interaction. Chaos2009: Chaotic modeling and simulations 2009-06-01 - 2009-06-05 2009.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Complex system approaches to space and laboratory plasmas. Interrelationship between plasma experiments in laboratory and space (IPELS-2009) 2009-06-08 - 2009-06-12 2009.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Rasende Dynamikk. 2008.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. En Felles Arena. 2008.

  • Rypdal, Kristoffer; Rypdal, Martin wibe; Kozelov, Boris V. Bursty transport - can we distinguish turbulence from SOC-avalanching?. 13'th EU-US Transport Task Force Workshop 2008-09-01 - 2008-09-04 2008.

  • Rypdal, Kristoffer; Kozelov, Boris V; Rypdal, Martin wibe; Zivkovic, Tatjana. Stochastic modeling of fluctuations in large-scale properties of the solar wind or the magnetosphere-ionosphere system. American Geophysical Union Fall Meeting 2008-12-15 - 2008-12-19 2008.

  • Rypdal, Martin wibe. A primer on sandpiles. Complexity in plasma and geospace systems 2007-03-04 - 2007-03-08 2007.

  • Rypdal, Kristoffer; Zivkovic, Tatjana; Kozelov, Boris V; Rypdal, Martin wibe. Astro and geospace complexity: the SOC versus turbulence controversy. 6th IGPP Annual International Astrophysics Conference 2007-03-16 - 2007-03-22 2007.

  • Rypdal, Martin wibe. A stochastic theory for temporal toppling fluctuations in self-organized critical systems. Det Norske Fysikermøtet 2007 2007-08-08 - 2007-08-10 2007.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. A stochastic theory for temporal toppling fluctuations in self-organized critical systems. Natural Complexity: data and theory in dialogue 2007-08-13 - 2007-08-17 2007.

  • Rypdal, Kristoffer; Kozelov, Boris V; Rypdal, Martin wibe. Do sandpile models explain complex dynamics in solar flares and polar aurora?. American Geophysical Union Fall meeting 2007 2007-12-10 - 2007-12-14 2007.

  • Rypdal, Martin wibe; Rypdal, Kristoffer. A stochastic theory for temporal fluctuations in self-organized critical systems. American Geophysical Union Fall meeting 2007 2007-12-10 - 2007-12-14 2007.

  • Rypdal, Kristoffer; Rypdal, Martin wibe. Hva bestemmer nivået?. Friidrett 2006; Volum 1 (6). ISSN 0332-9666.

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