Are there any geological analogues for current climate change – Essay Example

Download full paperFile format: .doc, available for editing

Hyperthermal events lead to complete alteration of different weather patterns which influenced a lot in the distribution of the animals across the world (Seki, 2010). The Paleocene-Eocene Thermal Maximum (PETM) was a duration in which natural increase in atmospheric temperatures occurred because of rapid release of carbon dioxide gas into the atmosphere. The Paleocene-Eocene Thermal Maximum occurred around fifty-five years ago. The hyperthermal event took place when the carbon II oxide concentration in the atmosphere was quite high as compared to the current levels. During this time, the atmospheric temperatures were higher resulting from the high levels of carbon II oxide concentration in the atmosphere.

This was referred to as the warm period. The Paleocene-Eocene Thermal Maximum event took place for the duration of approximately twenty thousand years and resulted to an increase in the global temperatures by 6-80c. This increase of temperature as a result of a massive injection of carbon II oxide into the atmosphere (Hönisch, 2009). The existence of this mystery was initially available after the evaluation of the sediment cores in the marine originating from the regions near Antarctica indicated a sudden change in Carbon-12 and Carbon-13 isotopes ratios.

Hyper thermal activities such as the Paleocene-Eocene Thermal Maximum (PETM), Ordovician-Silurian extinction, The Pliocene resulted to extinction of many species of the living organisms and respective modification. There has been vigorous research being carried on by different scientists with the aim of understanding the global response to the Hyper thermal activities. This serves in enhancing greater understanding of the global response to the current climatic changes as a result of global warming (Pagani, 2010). This ensures that the global warming can have an evaluation efficiently and possible solutions can be obtained to avoid greater damage that resulted from the Hyper thermal activities.

Various similarities and differences exist between the hypothermal activities and climate change as evaluated later in the report. The Hyper thermal activities can also be of use in assessing the current and future climate changes as experienced in the universe. The process of hydrothermal events involved rapid increase in the levels of atmospheric carbon dioxide; during currently global warming results from the gradual increase in the atmospheric temperatures because of the increase in the levels of Ozone gases in the atmosphere (Pagani, 2010).

References

Haywood A. M., Dowsett H. J., Valdes P. J., Lunt D. J., Francis J. E., Sellwood B. W.(2009) Introduction. Pliocene climate, processes and problems. Phil. Trans. R. Soc. A 367:3–17.

Siegenthaler U., et al (2005) Stable carbon cycle-climate relationship during the Late Pleistocene. Science 310:1313–1317.

Lüthi D., et al.(2008) High-resolution carbon dioxide concentration record 650000–800000 years before present. Nature 453:379–382).

Loulergue L., et al.(2008) Orbital and millennial-scale features of atmospheric CH4 over the past 800000 years. Nature 453:383–386).

Kürschner W. M., Kvaček Z., Dilcher D. L.(2008) Proc. Natl Acad. Sci. USA, The impact of Miocene atmospheric carbon dioxide fluctuations on climate and the evolution of terrestrial ecosystems, 105, pp 449–453.

Pagani M., Liu Z., LaRiviere J., Ravelo A. C.(2010) High Earth-system climate sensitivity determined from Pliocene carbon dioxide concentrations. Nat. Geosci. 3:27–30.

Pagani M., Zachos J. C., Freeman K. H., Tipple B., Bohaty S.(2005) Marked decline in atmospheric carbon dioxide concentrations during the Paleogene. Science 309:600–603.

Seki O., Foster G. L., Schmidt D. N., Mackensen A., Kawamura K., Pancost R. D.(2010) Alkenone and boron based Pliocene pCO2 records. Earth Planet. Sci. Lett. 292:201–211.

Tripati A. K., Roberts C. D., Eagle R. A. (2009) Coupling of CO2 and ice sheet stability over major climate transitions of the last 20 million years. Science 326:1394–1397.s

Hönisch B., Hemming G., Archer D., Siddall M., McManus J. F.(2009) Atmospheric carbon dioxide concentration across the Mid-Pleistocene Transition. Science 324:1551–1554.

Hemmo A. Abels, William C. Clyde, Philip D. Gingerich, Frederik J. Hilgen, Henry C. Fricke, Gabriel J. Bowen, Lucas J. Lourens, (2012). Terrestrial carbon isotope excursions and biotic change during Palaeogene hyperthermals. Nature Geoscience.

University of New Hampshire. (2012, April 2). New understanding to past global warming events: Hyperthermal events may be triggered by warming. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/2012/04/120402124442.htm

Wang, H.; Dennis V. Kent, Michael J. Jackson. (2012). “Evidence for abundant isolated magnetic nanoparticles at the Paleocene–Eocene boundary". Proceedings of the National Academy of Sciences.

Moore, E; Kurtz, Andrew C. (2008). "Black carbon in Paleocene-Eocene boundary sediments: A test of biomass combustion as the PETM trigger". Palaeogeography Palaeoclimatology Palaeoecology 267 (1-2): 147.

Laurens, L.J.; Sluijs, A.; Kroon, D.; Zachos, J.C.; Thomas, E.; Röhl, U.; Bowles, J.; Raffi, I. (2005). "Astronomical pacing of late Palaeocene to early Eocene global warming events". Nature 435 (7045): 1083–1087.

Download full paperFile format: .doc, available for editing
Contact Us