World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Evolution of Atmospheric Connectivity in the 20Th Century : Volume 21, Issue 4 (08/08/2014)

By Arizmendi, F.

Click here to view

Book Id: WPLBN0004014273
Format Type: PDF Article :
File Size: Pages 15
Reproduction Date: 2015

Title: Evolution of Atmospheric Connectivity in the 20Th Century : Volume 21, Issue 4 (08/08/2014)  
Author: Arizmendi, F.
Volume: Vol. 21, Issue 4
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Barreiro, M., Martí, A. C., & Arizmendi, F. (2014). Evolution of Atmospheric Connectivity in the 20Th Century : Volume 21, Issue 4 (08/08/2014). Retrieved from http://hawaiilibrary.net/


Description
Description: Instituto de Física, Facultad de Ciencias, Universidad de la República, Igua 4225, Montevideo, Uruguay. We aim to study the evolution of the upper atmosphere connectivity over the 20th century as well as to distinguish the oceanically forced component from the atmospheric internal variability. For this purpose we build networks from two different reanalysis data sets using both linear and nonlinear statistical similarity measures to determine the existence of links between different regions of the world in the two halves of the last century. We furthermore use symbolic analysis to emphasize intra-seasonal, intra-annual and inter-annual timescales. Both linear and nonlinear networks have similar structures and evolution, showing that the most connected regions are in the tropics over the Pacific Ocean. Also, the Southern Hemisphere extratropics have more connectivity in the first half of the 20th century, particularly on intra-annual and intra-seasonal timescales.

Changes over the Pacific main connectivity regions are analyzed in more detail. Both linear and nonlinear networks show that the central and western Pacific regions have decreasing connectivity from early 1900 up to about 1940, when it starts increasing again until the present. The inter-annual network shows a similar behavior. However, this is not true of other timescales. On intra-annual timescales the minimum connectivity is around 1956, with a negative (positive) trend before (after) that date for both the central and western Pacific. While this is also true of the central Pacific on intra-seasonal timescales, the western Pacific shows a positive trend during the entire 20th century.

In order to separate the internal and forced connectivity networks and to study their evolution through time, an ensemble of atmospheric general circulation model outputs is used. The results suggest that the main connectivity patterns captured in the reanalysis networks are due to the oceanically forced component, particularly on inter-annual timescales. Moreover, the atmospheric internal variability seems to play an important role in determining the intra-seasonal timescale networks.


Summary
Evolution of atmospheric connectivity in the 20th century

Excerpt
Albert, R. and Barabási, A. L.: Statistical mechanics of complex networks, Rev. Mod. Phys., 74, 47–97, 2002.; Bandt, C. and Pompe, B.: Permutation entropy: A natural complexity measure for time series, Phys. Rev. Lett., 88, 174102, 2002.; Barab\'asi, A. L. and Albert, R.: Emergence of scaling in random networks, Science, 286, 509–512, 1999.; Barreiro, M.: Influence of ENSO and the South Atlantic Ocean on climate predictability over Southeastern South America, Clim. Dynam., 35, 1493–1508, 2010.; Barreiro, M., Fedorov, A., Pacanowski, R., and Philander, S. G.: Abrupt Climate Changes: How Freshening of the Northern Atlantic Affects the Thermohaline and Wind-Driven Oceanic Circulations, Annu. Rev. Earth Planet. Sci., 36, 33–58, 2008.; Lintner, B. R. and Chiang, J. C. H.: Adjustment of remote tropical climate of El Niño conditions, J. Climate, 20, 2544–2557, 2006.; Barreiro, M., Marti, A. C., and Masoller, C.: Inferring long memory processes in the climate network via ordinal pattern analysis, Chaos, 21, 013101, doi:10.1063/1.3545273, 2011.; Broennimann, S., Stickler, A., Griesser, T., Fischer, A. M., Grant, A., Ewen, T., Zhou, T., Scharner, M., Rozanov, E., and Peter, T.: Variability of large-scale atmospheric circulation indices, Meteorol. Z., 18, 379–396, 2009.; Compo, G. P., Whitaker, J. S., Sardeshmukh, P. D., Matsui, N., Allan, R. J., Yin, X., Gleason, B. E., Vose, R. S., Rutledge, G., Bessemoulin, P., Brönnimann, S., Brunet, M., Crouthamel, R. I., Grant, A. N., Groisman, P. Y., Jones, P. D., Kruk, M. C., Kruger, A. C., Marshall, G. J., Maugeri, M., Mok, H. Y., Nordli, A., Ross, T. F., Trigo, R. M., Wang, X. L., Woodruff, S. D., and Worley, S. J.: The Twentieth Century Reanalysis Project, Q. J. Roy. Meteorol. Soc., 137, 1–28, doi:10.1002/qj.776, 2011.; Deza, J. I., Masoller, C., and Barreiro, M.: Distinguishing the effects of internal and forced atmospheric variability in climate networks, Nonlin. Processes Geophys., 21, 617–631, doi:10.5194/npg-21-617-2014, 2014.; Donges, J. F., Zou, Y., Marwan, N., and Kurths, J.: Complex networks in climate dynamics, Eur. Phys. J.-Spec. Top., 174, 157–179, doi:10.1140/epjst/e2009-01098-2, 2009.; Donges, J. F., Petrova, I., Loew, A., Marwan, N., and Kurths, J.: Relationships between eigen and complex network techniques for the statistical analysis of climate data, Rev arxiv:1305.6634v1, [physicsdata-an] arXiv:1305.6634v1, 2013.; Held, I. M.: Stationary and quasi-stationary eddies in the extratropical troposphere: Theory. Large-scale Processes in the Atmosphere, edited by: Hoskins, B. J. and Pearce, R. P., Academic Press, 127–168, 1983.; James, I. N.: Introduction to circulating atmospheres, Cambridge University Press, Cambridge, UK, 1994.; Kucharski, F., Molteni, F., and Bracco, A.: Decadal interactions between the western tropical Pacific and the North Atlantic Oscillation, Clim. Dynam., 26 79–91, 2006.; Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G.,Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K., Ropelewski, C., Wang, J., Leetmaa, A., Reynolds, R., Jenne, R., and Joseph, D.: The NCEP/NCAR 40-year reanalysis project, B. Am. Meteorol. Soc., 77, 437–471, 2.0.CO;2>doi:10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2, 1996.; Kucharski, F., Bracco, A., Yoo, J. H., and Molteni, F.: Atlantic forced component of the Indian monsoon interannual variability, Geophys. Res. Lett., 35, L04706, doi:10.1029/2007GL033037, 2008.; Kucharski, F., Bracco, A., Yoo, J. H., Tompkins, A., Feudale, L., Ruti, P., and Dell'Aquila, A.: A Gill-Matsun-type mechanism explains the Tropical At

 

Click To View

Additional Books


  • Estimation of Flow Velocity for a Debris... (by )
  • Methods to Describe Barotropic Vortices ... (by )
  • Large Amplitude Solitary Waves in and Ne... (by )
  • Multifractal Properties of Embedded Conv... (by )
  • Wavelet Ridge Diagnosis of Time-varying ... (by )
  • Roma (Rank-ordered Multifractal Analyses... (by )
  • Characteristics of Electrostatic Solitar... (by )
  • Theoretical Interpretation of Fetch Limi... (by )
  • Distribution of Incremental Static Stres... (by )
  • Wave Vector Analysis Methods Using Multi... (by )
  • Estimation of Soil Types by Non Linear A... (by )
  • Intermittent Particle Dynamics in Marine... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.