People

Amy Clement

Amy Clement

Associate Dean and Professor, Meteorology & Physical Oceanography

RSMAS/MPO
University of Miami
4600 Rickenbacker Causeway
Miami, FL 33149

MSC 362

Tel: 305.421.4846
aclement@rsmas.miami.edu

Lab Website

Google Scholar Profile

My research interests focus on some fundamental questions about the behavior of the climate system. How sensitive is the Earth's climate to external forcing? Is abrupt change a characteristic of the climate? What are the mechanisms of climate change? Several of these questions arise out of the paleoclimate record. In addition to observed major swings in global ice volume over the past 600,000 years (the so-called “Ice Ages”), there are superimposed abrupt changes that can happen on the order of decades. The paleoclimate record gives us an idea of the dramatic range of climate behavior that is “natural.” It is essential to understand the mechanisms behind these changes in order to put our present climate into the proper context, and to understand and predict how the climate may change in the future as anthropogenic greenhouse gases increase.

To address these questions, I use mathematical models of the climate. These range in complexity from one-dimensional approximations of the climate to global, three-dimensional models (general circulation models- GCMs). My focus has generally been on the tropical coupled ocean-atmosphere system, and in particular on the El Niño/Southern Oscillation (ENSO). As the largest mode of variability in the modern climate, understanding the whys and hows of past changes in (ENSO) are essential in answering fundamental questions about the behavior of the climate system, and are highly relevant for addressing the problem of how climate may change in the future.
  1. *Mantsis, D.F. A. C. Clement, A. J. Broccoli, 2012: Precessional cycles and the remote influence on the subtropical highs. In revision at Journal of Climate.
  2. Erb, M., A. J. Broccoli, and A. C. Clement, 2012: The role of feedbacks in precession and obliquity-driven climate change. Submitted to Journal of Climate.
  3. DiNezio, P., G. Vecchi and A. Clement, 2012: Detectability of Changes in the Walker Circulation in Response to Global Warming. In revision at Journal of Climat.e
  4. *DiNezio, P. N., B. Kirtman, A. C. Clement, S-K Lee, G. A. Vecchi, and A. Wittenberg. 2012: Mean Climate Controls on the Simulated Response of ENSO to Increasing Greenhouse Gases. In press in J. Climate
  5. Chung, E., B. Soden, and A. Clement, 2012: Diagnosing climate feedbacks in coupled ocean-atmosphere models. Surveys in Geophysics, 27, 3, DOI 10.1007/s10712-012-9187-x
  6. Clement, A. C., P. DiNezio, and C. Deser, 2011: Rethinking the Ocean’s Role in the Southern Oscillation. J. Climate, 24, 4056-4072,doi:10.1175/2011JCLI3973.1.
  7. *DiNezio, P. N., A. Clement, G. A. Vecchi, B. Soden, A. J. Broccoli, B. L. Otto-Bliesner, and P. Braconnot (2011), The response of the Walker circulation to Last Glacial Maximum forcing: Implications for detection in proxies, Paleoceanography, 26, PA3217, doi:10.1029/2010PA002083.
  8. *Mantsis, D. F., A. C. Clement, A. J., Broccoli, M. P. Erb, 2010: Climate feedbacks in response to changes in obliquity. J. Climate, Volume 24, Issue 11 (June 2011) pp. 2830-2845, doi: 10.1175/2010JCLI3986.1
  9. Clement, A. C., B.Kirtman, and A. Pirani, 2010: Climate Literacy as a foundation for progress in predicting and adapting to the climate of the coming decades. Bulletin of the American Meteorological Society. Volume: 92   Issue: 5 Pages: 633-635   DOI: 10.1175/2010BAMS3161.1  
  10. Clement, A. C., A. C. Baker and J. Leloup, 2010: Tropical warming: Acting locally but reaching globally. Nature Geoscience, doi:10.1038/ngeo728.
  11. *DiNezio, P, A. Clement, G. Vecchi, 2009: Is El Nino an appropriate analogue for tropical Pacific climate change? EOS, 91, 16, 141-142. 
  12. Clement, A. C., R. Burgman, J. Norris, 2010: Reply to Broccoli and Klein comment on ‘Observational and model evidence for positive low-level cloud feedback. Science, 16 July 2010: 277. [DOI:10.1126/science.1187667]
  13. *Burgman, R., R. Seager, A. Clement, and C. Herweijer (2010), Role of tropical
    Pacific SSTs in global medieval hydroclimate: A modeling study, Geophys. Res.
    Lett.
    , 37, L06705, doi:10.1029/2009GL042239.
  14. *DiNezio, P, A. Clement, G. Vecchi, B. Soden, B. Kirtman, S-K Lee, 2009: Climate Response of the Equatorial Pacific to Global Warming. J. Climate, Volume 22, Issue 18 (September 2009) pp. 4873–4892 DOI: 10.1175/2009JCLI2982.1
  15. Clement, A., R. Burgman, and J. Norris (2009): Observational and model evidence for positive low-level cloud feedback. Science. Vol. 325. no. 5939, pp. 460 – 464, DOI: 10.1126/science.1171255
  16. *Leloup, J., and A. Clement (2009), Why is there a minimum in projected warming in the tropical North Atlantic Ocean?, Geophys. Res. Lett., 36, L14802, doi:10.1029/2009GL038609.
  17. *Mantsis, D. F., and A. C. Clement (2009), Simulated variability in the mean atmospheric meridional circulation over the 20th century, Geophys. Res. Lett., 36, L06704, doi:10.1029/2008GL036741.
  18. Clement, A. C., and L. C. Peterson (2008), Mechanisms of abrupt climate change of the last glacial period, Rev. Geophys., 46, RG4002, doi:10.1029/2006RG000204.
  19. Vecchi, G., A. Clement, and B. Soden, 2008: Examining the Tropical Pacific’s Response to Global Warming. EOS, 89, 81-83.
  20. Seager, R., R. Burgman, Y. Kushnir, A. Clement, E. Cook, N. Naik, J. Miller, 2008: Tropical Pacific forcing of North American Medieval megadroughts: Testing the concept with an atmosphere model forced by coral-reconstructed SSTs. J. Climate, Volume 21, Issue 23 (December 2008) pp. 6175–6190. DOI: 10.1175/2008JCLI2170.1
  21. *Burgman, R., A. C. Clement, C. M. Mitas, J. Chen, and K. Esslinger, 2007: Evidence for Atmospheric variability over the Pacific on decadal timescales. Geophys. Res. Letts., 34, doi:10.1029/2007GL031830. 
  22. Timmermann, A, S. Lorenz, S.-I. An, A. Clement, S.-P. Xie, 2007: The Effect of Orbital Forcing on the Mean Climate and Variability of the Tropical Pacific . J. Climate, Volume 20, Issue 16 (August 2007) pp. 4147–4159.
  23. Timmermann, A., Y. Okumura, S.-I. An, A. Clement, B. Dong, E. Guilyardi, J. Jungclaus, U. Krebs, M. Renold, T.F. Stocker, R. J. Stouffer, R. Sutton, S.-P. Xie, J. Yin, 2007:  The influence of a collapse of the meridional circulation of the Atlantic on ENSO. J. Climate, Volume 20, Issue 19 (October 2007) pp. 4899–4919.
  24. Fleming LE, Broad K, Clement A, Dewailly E, Elmir S, Knap A, Pomponi SA, Smith S, Solo Gabriele H, Walsh, P. 2006: Oceans and Human Health: Emerging Public Health Risks in the Marine Environment. Marine Pollution Bulletin, doi:10.1016/j.marpolbul.2006.08.012.
  25. Cane, M. A., Pascale Braconnot, Amy Clement, Hezi Gildor, Sylvie Joussaume, Masa Kageyama, Myriam Khodri, Didier Paillard,  Simon Tett, Eduardo Zorita, 2006: Progress in Paleoclimate modeling. J. Climate, Vol. 19, No. 20, 5031–5057.
  26. Clement, A. C., 2006: The role of the ocean in the seasonal cycle of the Hadley circulation. J. Atmos. Sci., Vol. 63, No. 12, pages 3351–3365.
  27. *Mitas C. M., A. Clement, 2006: Recent behavior of the Hadley cell and tropical thermodynamics in climate models and reanalyses, Geophys. Res. Lett., 33, L01810, doi:10.1029/2005GL024406.
  28. Clement, A.C., R. Seager and R. Murtugudde, 2005: Why Are There Tropical Warm Pools? Journal of Climate, Vol. 18, No. 24, pages 5294–5311.
  29. Clement, A.C. and B. Soden, 2005: The Sensitivity of the Tropical-mean Radiation Budget. J. Climate, Vol. 18, No. 16, pages 2909–2923
  30. Herweijer, C., R. Seager, M. Winton and A. Clement, 2005: Why ocean heat transport warms the global mean climate. Tellus A, 57 (4), 662-675.
  31. Hall, A., A.  Clement, D. W. J. Thompson, A. J.  Broccoli and C.  Jackson. 2005: The Importance of Atmospheric Dynamics in the Northern Hemisphere Wintertime Climate Response to Changes in the Earth’s Orbit. Journal of Climate: Vol. 18, No. 9, pp. 1315–1325.
  32. Mann, M.E., Mark A. Cane, Stephen E. Zebiak and Amy Clement. 2005: Volcanic and Solar Forcing of the Tropical Pacific over the Past 1000 Years. Journal of Climate: Vol. 18, No. 3, pp. 447–456.
  33. *Mitas C. M., A. Clement (2005), Has the Hadley cell been strengthening in recent decades?, Geophys. Res. Lett., 32, L03809, doi:10.1029/2004GL021765.
  34. Otto-Bliesner, B. and A. C. Clement, 2004: The sensitivity of the Hadley circulation to past and future climate forcing in two climate models. In The Hadley Circulation: Present, Past and Future. Eds. H. F. Diaz and R. S. Bradley. Kluwer Academic Publishers, The Netherlands. 511 pp. 
  35. Clement, A. C., A. Hall, and A. J. Broccoli, 2004: The importance of precessional signals in the tropical climate. Climate Dynamics. 22, 4, 327 – 341.
  36. Emile-Geay, J., M.A. Cane, N. Naik, R. Seager, A.C. Clement, and A. VanGeen, 2003:  Warren revisited: Atmospheric freshwater fluxes and “Why is no deep water formed in the North Pacific”   J. Geophys. Res108, C6, 1-12.
  37. Seager, R., R. Murtugudde,  A. C. Clement, C. Herweijer, 2003b: Why is there an evaporation minimum at the equator? J. Climate, 16, 3792-3801.
  38. Garreaud, R., M. Vuille, and A.C. Clement, 2003: The climate of the Altiplano: Oberserved current conditions and mechanisms of past changes.  Palaeogeo. Palaeoclim. Palaeoeco, 194, 5-22.
  39. Seager, R., R. Murtugudde, N. Naik, A.C. Clement, N. Gordon, and J. Miller, 2003a: Air-sea interaction and the seasonal cycle of the subtropical anticyclones. J. Climate, 16 (12), 1948-1966.
  40. Seager, R., D.S. Battisti, J. Yin, N. Gordon, N. Naik, A.C. Clement, and M.A. Cane, 2002:  Is the Gulf Stream responsible for Europe’s mild winters?  Q.J.R. Meteorol. Soc, 128 (586), 2563-2586, Part B.
  41. Kukla G.K., Clement, A.C., M.A. Cane, J.E. Gavin, and S. Zebiak, 2002:  Last Interglacial and early glacial ENSO.  Quaternary Research, 58, 27-31.
  42. Schmittner, A and A.C. Clement, 2002:  Response of the thermohaline circulation to tropical and high latitude freshwater forcing during the last glacial-interglacial cycle.  Paleoceanography, 17.
  43. Stute, M., A.C. Clement, and G. Lohmann, 2001:  Global climate models: Past, present and future.  Procs. Nat. Acad. Sci., 98, 10529-10530.
  44. Sandweiss, D.H, K.A. Maasch, R.L. Burger, J.B. Richardson, H.B. Rollins, and A.C. Clement, 2001:  Variation in Holocene El Niño frequencies:  Climate records and cultural consequences in ancient Peru.  Geology, 29, 603-606.
  45. Clement, A.C., M.A. Cane, and R. Seager, 2001:  An orbitally driven tropical source for abrupt climate change.  J. Climate, 14, 2369-2375.
  46. Cane, M.A., A.C. Clement, M.K. Gagan, L.K. Ayliffe, S. Tudhope, 2000:  ENSO through the Holocene, depicted in corals and a model simulation.  PAGES Newsletter, 8, 3-7.
  47. Clement, A.C., R. Seager, and M.A. Cane, 2000:  Suppression of El Niño during the mid-Holocene by changes in the Earth's orbit.  Paleoceanography, 15, 731-737.
  48. Seager, R., A.C. Clement, M.A. Cane, and S.E. Zebiak, 2000:  Glacial cooling in the tropics: exploring the roles of tropospheric water vapor, surface wind speed and boundary layer processes.  J. Atmos. Sci., 57, 2144-2157.
  49. Clement, A.C., and R. Seager, 1999:  Climate and the tropical oceans.  J. Climate, 12, 3383-3401.
  50. Clement, A.C. and M.A. Cane, 1999:  A role for the tropical Pacific coupled ocean-atmosphere system on Milankovich and millenial timescales.  Part I:  A modeling study of tropical Pacific variability.  In AGU Monograph:  Mechanisms of millenial scale global climate change.
  51. Cane, M.A. and A.C. Clement 1999:  A role for the tropical Pacific coupled ocean-atmosphere system on Milankovich and millenial timescales.  Part II: Global impacts.  In AGU Monograph: Mechanisms of millenial scale global climate change.
  52. Clement, A.C., R. Seager, and M.A. Cane, 1999:  Orbital controls on ENSO and the tropical climate.  Paleoceanography, 14, 441-456.
  53. Kaplan, A, M.A. Cane, Y. Kushnir, A.C. Clement, M.B. Blumenthal, B. Rajagopalan, 1998:  Analyses of global sea surface temperature.  J. Geophys. Res., 103, 18,567-18,589.
  54. Clement, A.C., M.A. Cane, and R. Seager, 1997:  Patterns and mechanisms of Twentieth Century climate change.  World Resource Rev., 10, 161-185.
  55. Cane, M.A., A.C. Clement, A.Kaplan, Y.Kushnir, R.Murtugudde, D.Pozdnyakov, R.Seager, and S. E Zebiak, 1997:  Twentieth century sea surface temperature trends.  Science, 275, 957-960.
  56. Clement, A.C., R. Seager, M.A. Cane, and S.E. Zebiak, 1996:  An ocean dynamical thermostat.  J. Climate, 9, 2190-2196.
  57. Clement, A.C. and A.L. Gordon, 1994:  The absolute velocity field of Agulhas eddies and the Benguela Current.  J. Geophys. Res., 100, 22591-22601.

* indicates first author is a student or post-doc doctoral advisee

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