Abstract
Our understanding of the climates that have existed on Earth through its history has increased tremendously through a combination of geophysical fluid dynamics, geological evidence, and numerical modelling. Evolution of our Earth’s orbit redistributes incoming solar radiation latitudinally and temporally and is believed to have been responsible for changing the strength of the south Asian monsoon, expanding and contracting desert regions, and perhaps even initiating the (geologically) recent cycles of glaciation. Evolution of the atmosphere itself, in terms of the amount of atmospheric greenhouse gases in it, affects the amount of water vapour in the atmosphere, global temperatures, and meridional temperature gradients. Topographic forcing by the massive continental ice sheets that have existed in the past is believed to have significantly altered the jet stream circulation.
All of these factors-the distribution of incoming solar radiation, atmospheric greenhouse gases, and topograhic forcing-affect the mean baroclinic structure of our atmosphere, the amount of baroclinic wave activity present, and the eddy heat and momentum fluxes associated with these eddies. The equatorward flux of easterly momentum during the barotropic decay phase of these waves, in particular, plays a key role in determining the strength of upper level convergence and subsidence in the subtropics and, hence, the low-level meridional pressure gradient that helps to maintain the tropical trade winds. Through a series of numerical experiments with a coupled atmosphere-ocean general circulation model, it is shown that all of the factors listed above have played a role in determining the amount of baroclinic wave activity in climates of the Earth’s past and that changes in tropical circulations are consistent with the notion that the baroclinic eddy field plays an important role in determining the mean state in the tropics.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Andreasen, D., and A. C. Ravelo, Tropical Pacific Ocean thermocline depth reconstructions for the Last Glacial, Paleoceanography, 12:395–414, 1997.
Barron, E.J., and W. Washington, The atmospheric circulation during warm, geologic periods: Is the equator-to-pole surface temperature gradient the controlling factor? Geology, 10:633–636, 1982.
Becker, E., G. Schmitz, and R. Geprags, The feedback of midlatitude waves onto the Hadley cell in a simple general circulation model. Tellus, 49A:182–199, 1997.
Berger, A., Orbital variations and insolation database, IGBP PAGES/World Data Center-A for Paleoclimatology Data Contribution Series # 92-007. NOAA/N GDC Paleoclimatology Program, Boulder CO, USA.
Berner, R.A., A model for atmospheric CO2 over Phanerozoic time, Am. J. Sci., 291:339–376, 1991.
Bush, A.B.G., Assessing the impact of mid-Holocene insolation on the atmosphere-ocean system. Geophy. Res. Lett., 26:99–102, 1999.
Bush, A.B.G., Simulating climates of the Last Glacial Maximum and of the mid-Holocene: Wind changes, atmosphere-ocean interactions, and the tropical thermocline. AGU Monograph Series 126 (The Oceans and Rapid Climate Change: Past, Present, and Future), 135–144, 2001.
Bush, A.B.G. and S.G.H. Philander, The climate of the Last Glacial Maximum: Results from a coupled atmosphere-ocean general circulation model. J. Geophys. Res., 104:24509–24525, 1999.
Chang, E.K.M., Mean meridional circulation driven by eddy forcings of different time scales. J. Atmos. Sci., 53:113–125, 1996.
Clemens, S.C. and W.L. Prell, Late Pleistocene variability of Arabian Sea summer-monsoon winds and dust source-area aridity: A record from the lithogenic component of deep-sea sediments, Paleoceanography, 5:109–145, 1990.
Climate: Long-Range Investigation, Mapping, and Prediction (CLIMAP) Project Members, Seasonal reconstructions of the Earth’s surface at the last glacial maximum, Map and Chart Series MC-36, Geol. Soc. of Am., Boulder, CO, 1981.
Edmon, H.J., B.J. Hoskins, and M.E. McIntyre, Eliassen-Palm cross-sections for the troposphere, J. Atmos. Sci., 37:2600–2616, 1980.
Endal, A.S. and S. Sofia, Rotation in solar-type stars, I, Evolutionary models for the spindown of the sun. Astrophys. Jour., 243:625–640, 1981.
Fairbanks, R.G., A 17,000-year glacio-eustatic sea level record: Influence of glacial melting rates on Younger Dryas event and deep-ocean circulation, Nature, 342:637–642, 1989.
Fedorov, A.V. and S.G.H. Philander, Is El Niño Changing? Science, 288:1997–2002, 2000.
Gordon, C.T., and W. Stern, A description of the GFDL global spectral model, Mon. Weather Rev., 110:625–644, 1982.
Hall, N.M.J., P.J. Valdes, and B. Dong, The maintenance of the last great ice sheets: A UGAMP GCM study, J. Clim., 9:1004–1019, 1996.
Haynes, P.H., and T.G. Shepherd, The importance of surface pressure changes in the response of the atmosphere to zonally-symmetric thermal and mechanical forcing, Q. J. R. Meteorol. Sci., 115:1181–1208, 1989.
Held, I.M., and A.Y. Hou, Nonlinear axially symmetric circulations in a nearly inviscid atmosphere, J. Atmos. Sci., 37:515–533, 1980.
Hoffman, P.F., A.J. Kaufman, G.P. Halverson, and D.P. Schrag, A Neoproterozoic snowball earth, Science, 281:1342–1346, 1998.
Hyde, W.T., T.J. Crowley, S.K. Baum, and W.R. Peltier, Neoproterozoic’ snowball Earth’ simulations with a coupled climate/ice-sheet model, Nature, 405:425–429, 2000.
Kim, H.K., and S. Lee, Hadley cell dynamics in a primitive equation model: Part I. Axisymmetric flow. J. Atmos. Sci., 58:2845–2858, 2001.
Kim, H.K., and S. Lee, Hadley cell dynamics in a primitive equation model: Part II. Nonaxisymmetric flow. J. Atmos. Sci., 58:2859–2871, 2001.
Kutzbach, J.E. and B.L. Otto-Bliesner (1982). The sensitivity of the African-Asian monsoonal climate to orbital parameter changes for 9000 years B.P. in a low-resolution general circulation model. J. Atmos. Sci., 39:1177–1188.
Lindzen, R.S., and A.Y. Hou, Hadley circulations for zonally averaged heating off the equator, J. Atmos. Sci., 45:2416–2427, 1988.
Lyle, M.W., F.G. Prahl, M.A. Sparrow, Upwelling and productivity changes inferred from a temperature record in the central equatorial Pacific, Nature, 355:812–815, 1992.
Otto-Bleisner, B.L., El Niño/La Niña and Sahel precipitation during the middle Holocene. Geophys. Res. Lett., 26:87–90, 1999.
Pacanowski, R.C., K. Dixon, and A. Rosati, The GFDL Modular Ocean Model user guide, GFDL Ocean Group Tech. Rep. 2, Geophys. Fluid Dyn. Lab., Princeton, N.J., 1991.
Pedersen, T.F., Increased productivity in the eastern equatorial Pacific during the last glacial maximum (19,000 to 14,000 yr B.P.), Geology, 11:16–19, 1983.
Peixoto, J.P. and A.H. Oort, Physics of Climate, American Institute of Physics, New York, 520 pp., 1992.
Peltier, W.R., Ice age paleotopography, Science, 265:195–201, 1994.
Pfeffer, R.L., Wave-mean flow interactions in the atmosphere. J. Atmos. Sci., 38:1340–1359, 1981.
Philander, S.G.H., El Niño and La Niña, J. Atmos. Sci., 42:2652–2662, 1985.
Philander, S.G.H., El Niño, La Niña, and the Southern Oscillation, Academic Press, New York, 293 pp., 1990.
Prell, W.L., Monsoonal climate of the Arabian Sea during the late Quaternary: A response to changing solar radiation. In Milankovitch and Climate (A. Berger et al., Eds.), pp. 349–366. Reidel, Dordrecht, 1984.
Prell, W.L. and J.E. Kutzbach, Sensitivity of the Indian monsoon to forcing parameters and implications for its evolution. Nature, 360:647–652, 1992.
Rutter, N.W., Presidential Address, XIII INQUA Congress 1991: Chinese loess and global change, Quat. Sci. Rev., 11:275–281, 1992.
Sarnthein, M., G. Tetzlaff, B. Koopman, K. Wolter, and U. Pflaumann, Glacial and interglacial wind regimes over the eastern subtropical Atlantic and north-west Africa, Nature, 293:193–196, 1981.
Simmons, A.J. and B.J. Hoskins, Barotropic influences on the growth and decay of nonlinear baroclinic waves, J. Atmos. Sci., 37:1679–1684, 1980.
Sloan, L.C., and E.J. Barron, “Equable” climates during Earth history? Geology, 18:489–492, 1990.
Wright, H.E. Jr., J.E. Kutzbach, T. Webb III, W.F. Ruddiman, F.A. Street-Perrott, and P.J. Bartlein (Eds.), Global climates since the Last Glacial Maximum, 569 pp, University of Minnesota Press, Minneapolis, 1993.
Xie, S.-P., Ocean-atmosphere interaction in the making of the Walker circulation and the equatorial cold tongue, J. Clim., 11:189–201, 1998.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2003 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Bush, A.B.G. (2003). Baroclinic Waves in Climates of the Earth’s Past. In: Velasco Fuentes, O.U., Sheinbaum, J., Ochoa, J. (eds) Nonlinear Processes in Geophysical Fluid Dynamics. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0074-1_9
Download citation
DOI: https://doi.org/10.1007/978-94-010-0074-1_9
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3996-3
Online ISBN: 978-94-010-0074-1
eBook Packages: Springer Book Archive