Alexey Kaplan

Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Ocean and Climate Physics
103C Oceanography
61 Route 9W - PO Box 1000
(845) 365-8689
(845) 365-8157
Fields of interest: 
Analyses of climate fields based on historical, instrumental and paleoclimatic data; El Nino and Southern Oscillation; ocean data assimilation; statistical studies of climate variability from observations and models

I work in the Climate Modeling Group which is part of the LDEO Division of Ocean and Climate Physics. My research is on climate variability, predictability, and prediction, and on methods to study such things. It involves historical climate analyses, paleoclimatic reconstructions, data assimilation, and studies of error dynamics in the ocean and coupled climate models.

List of degrees from highest to lowest:
Ph.D., Mechanical Engineering
Russian State University of Oil and Gas, Moscow, Russia
B.S. (honors), Applied Mathematics
Russian State University of Oil and Gas, Moscow, Russia
Honors & Awards: 
6th Excellence in Mentoring Award, LDEO, 2009
Editors' Citation for Excellence in Refereeing, AGU, 2005
Selected Publications: 
On the fidelity of shell-derived δ18Oseawater estimates, Arbuszewski, J.A.; deMenocal, P.; Kaplan, A.; Farmer, E.C. , Earth and Planetary Science Letters, Volume 300, Issue 3-4, p.185-196, (2010)

Bayesian PCA for reconstruction of historical sea surface temperatures, Ilin, A; Kaplan, A , Atlanta, GA, USA, (2009)

Evaluating climate variability and change from modern and historical SST observations, Rayner, N A; Kaplan, A; Kent, E C; Reynolds, R W; Brohan, P; Casey, K S; Kennedy, J J; Woodru ff, S D; Smith, T M; Donlon, C; Breivik, L A; Eastwood, S; Ishii, M; Brandon, T , Venice, Italy, (2009)

The evolution of the equatorial Pacific zonal SST gradient during the twentieth century, Karnauskas, K B; Seager, R; Kaplan, A; Kushnir, Y; Cane, M A , J Climate, Volume 22, Issue 16, p.4316-4321, (2009)

Interdecadal-decadal climate variability from multicoral oxygen isotope records in the South Pacific Convergence Zone region since 1650 A.D., Linsley, B. K.; Zhang, P. P.; Kaplan, A.; Howe, S. S.; Wellington, G. M. , Paleoceanography, Jun 20, Volume 23, Issue 2, p.-, (2008), Doi 10.1029/2007pa001539

An 8-century tropical Atlantic SST record from the Cariaco Basin: Baseline variability, twentieth-century warming, and Atlantic hurricane frequency, Black, D. E.; Abahazi, M. A.; Thunell, R. C.; Kaplan, A.; Tappa, E. J.; Peterson, L. C. , Paleoceanography, Oct 25, Volume 22, Issue 4, p.-, (2007), Doi 10.1029/2007pa001427

Corroborating ecological depth preferences of planktonic foraminifera in the tropical Atlantic with the stable oxygen isotope ratios of core top specimens, Farmer, E. C.; Kaplan, A.; de Menocal, P. B.; Lynch-Stieglitz, J. , Paleoceanography, Aug 1, Volume 22, Issue 3, p.-, (2007), Doi 10.1029/2006pa001361

The degree of anisotropy for mid-ocean currents from satellite observations and an eddy-permitting model simulation, Huang, H. P.; Kaplan, A.; Curchitser, E. N.; Maximenko, N. A. , Journal of Geophysical Research-Oceans, Sep 12, Volume 112, Issue C9, p.-, (2007), Doi 10.1029/2007jc004105

El Nino as a mediator of the solar influence on climate, Emile-Geay, J.; Cane, M.; Seager, R.; Kaplan, A.; Almasi, P. , Paleoceanography, Aug 8, Volume 22, Issue 3, p.-, (2007), Doi 10.1029/2006pa001304

Comments on "Testing the Fidelity of Methods Used in Proxy-Based Reconstructions of Past Climate": The role of the standardization interval, Smerdon, J. E.; Kaplan, A. , Journal of Climate, Nov 15, Volume 20, Issue 22, p.5666-5670, (2007), Doi 10.1175/2007jcli1794.1

The effects of sea-ice and land-snow concentrations on planetary albedo from the earth radiation budget experiment, Gorodetskaya, I. V.; Came, M. A.; Tremblay, L. B.; Kaplan, A. , Atmosphere-Ocean, Jun, Volume 44, Issue 2, p.195-205, (2006)

A forward modeling approach to paleoclimatic interpretation of tree-ring data, Evans, M. N.; Reichert, B. K.; Kaplan, A.; Anchukaitis, K. J.; Vaganov, E. A.; Hughes, M. K.; Cane, M. A. , Journal of Geophysical Research-Biogeosciences, Aug 10, Volume 111, Issue G3, p.-, (2006), Doi 10.1029/2006jg000166

Forward modeling of regional scale tree-ring patterns in the southeastern United States and the recent influence of summer drought, Anchukaitis, K. J.; Evans, M. N.; Kaplan, A.; Vaganov, E. A.; Hughes, M. K.; Grissino-Mayer, H. D.; Cane, M. A. , Geophysical Research Letters, Feb 21, Volume 33, Issue 4, p.-, (2006), Doi 10.1029/2005gl025050

Predictability loss in an intermediate ENSO model due to initial error and atmospheric noise, Karspeck, A. R.; Kaplan, A.; Cane, M. A. , Journal of Climate, Aug, Volume 19, Issue 15, p.3572-3588, (2006)

Toward estimating climatic trends in SST. Part III: Systematic biases, Kent, E. C.; Kaplan, A. , Journal of Atmospheric and Oceanic Technology, Mar, Volume 23, Issue 3, p.487-500, (2006)

Tracking the extent of the South Pacific Convergence Zone since the early 1600s, Linsley, B. K.; Kaplan, A.; Gouriou, Y.; Salinger, J.; Demenocal, P. B.; Wellington, G. M.; Howe, S. S. , Geochemistry Geophysics Geosystems, May 3, Volume 7, p.-, (2006), Doi 10.1029/2005gc001115

Multi-scale modeling of the North Pacific Ocean: Assessment and analysis of simulated basin-scale variability (1996-2003), Curchitser, E. N.; Haidvogel, D. B.; Hermann, A. J.; Dobbins, E. L.; Powell, T. M.; Kaplan, A. , Journal of Geophysical Research-Oceans, Nov 30, Volume 110, Issue C11, p.-, (2005), Doi 10.1029/2005jc002902

Radiocarbon calibration curve spanning 0 to 50,000 years BP based on paired Th-230/U-234/U-238 and C-14 dates on pristine corals, Fairbanks, R. G.; Mortlock, R. A.; Chiu, T. C.; Cao, L.; Kaplan, A.; Guilderson, T. P.; Fairbanks, T. W.; Bloom, A. L.; Grootes, P. M.; Nadeau, M. J. , Quaternary Science Reviews, Sep, Volume 24, Issue 16-17, p.1781-1796, (2005), DOI 10.1016/j.quascirev.2005.04.007

The relationship between tibetan snow depth, ENSO, river discharge and the monsoons of Bangladesh, Shaman, J.; Cane, M.; Kaplan, A. , International Journal of Remote Sensing, Sep 10, Volume 26, Issue 17, p.3735-3748, (2005), Doi 10.1080/01431160500185599

A 2000-year record of Caribbean and tropical North Atlantic hydrographic variability, Black, D. E.; Thunell, R. C.; Kaplan, A.; Peterson, L. C.; Tappa, E. J. , Paleoceanography, Jun 23, Volume 19, Issue 2, p.-, (2004), Doi 10.1029/2003pa000982

Predictability of El Nino over the past 148 years, Chen, D.; Cane, M. A.; Kaplan, A.; Zebiak, S. E.; Huang, D. J. , Nature, Apr 15, Volume 428, Issue 6984, p.733-736, (2004), Doi 10.1038/Nature02439

Small-scale variability and model error in tropical Pacific sea level, Kaplan, A.; Cane, M. A.; Chen, D.; Witter, D. L.; Cheney, R. E. , Journal of Geophysical Research-Oceans, Feb 4, Volume 109, Issue C2, p.-, (2004), Doi 10.1029/2002jc001743

Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century, Rayner, N. A.; Parker, D. E.; Horton, E. B.; Folland, C. K.; Alexander, L. V.; Rowell, D. P.; Kent, E. C.; Kaplan, A. , Journal of Geophysical Research-Atmospheres, Jul 17, Volume 108, Issue D14, p.-, (2003), Doi 10.1029/2002jd002670

Reduced space approach to the optimal analysis interpolation of historical marine observations: Accomplishments, difficulties, and prospects, Kaplan, A.; Cane, M. A.; Kushnir, Y. , Advances in the Applications of Marine Climatology, p.199-216, (2003)

Impact of the North Atlantic Oscillation on Middle Eastern climate and streamflow, Cullen, H. M.; Kaplan, A.; Arkin, P. A.; Demenocal, P. B. , Climatic Change, Nov, Volume 55, Issue 3, p.315-338, (2002)

Pacific sea surface temperature field reconstruction from coral delta O-18 data using reduced space objective analysis, Evans, M. N.; Kaplan, A.; Cane, M. A. , Paleoceanography, Feb, Volume 17, Issue 1, p.-, (2002), Doi 10.1029/2000pa000590

Support for tropically-driven Pacific decadal variability based on paleoproxy evidence, Evans, M. N.; Cane, M. A.; Schrag, D. P.; Kaplan, A.; Linsley, B. K.; Villalba, R.; Wellington, G. M. , Geophysical Research Letters, Oct 1, Volume 28, Issue 19, p.3689-3692, (2001)

Use of data assimilation via linear low-order models for the initialization of El Nino Southern Oscillation predictions, Canizares, R.; Kaplan, A.; Cane, M. A.; Chen, D.; Zebiak, S. E. , Journal of Geophysical Research-Oceans, Dec 15, Volume 106, Issue C12, p.30947-30959, (2001)

Bias correction of an ocean-atmosphere coupled model, Chen, D.; Cane, C. M.; Zebiak, S. E.; Canizares, R.; Kaplan, A. , Geophysical Research Letters, Aug 15, Volume 27, Issue 16, p.2585-2588, (2000)

Intercomparison of coral oxygen isotope data and historical sea surface temperature (SST): Potential for coral-based SST field reconstructions, Evans, M. N.; Kaplan, A.; Cane, M. A. , Paleoceanography, Oct, Volume 15, Issue 5, p.551-563, (2000)

Reduced space optimal interpolation of historical marine sea level pressure: 1854-1992, Kaplan, A.; Kushnir, Y.; Cane, M. A. , Journal of Climate, Aug 15, Volume 13, Issue 16, p.2987-3002, (2000)

Eight centuries of North Atlantic Ocean atmosphere variability, Black, D. E.; Peterson, L. C.; Overpeck, J. T.; Kaplan, A.; Evans, M. N.; Kashgarian, M. , Science, Nov 26, Volume 286, Issue 5445, p.1709-1713, (1999)

Analyses of global sea surface temperature 1856-1991, Kaplan, A.; Cane, M. A.; Kushnir, Y.; Clement, A. C.; Blumenthal, M. B.; Rajagopalan, B. , Journal of Geophysical Research-Oceans, Aug 15, Volume 103, Issue C9, p.18567-18589, (1998)

The impact of sea level data assimilation on the Lament model prediction of the 1997/98 El Nino, Chen, D. K.; Cane, M. A.; Zebiak, S. E.; Kaplan, A. , Geophysical Research Letters, Aug 1, Volume 25, Issue 15, p.2837-2840, (1998)

Optimal sites for coral-based reconstruction of global sea surface temperature, Evans, M. N.; Kaplan, A.; Cane, M. A. , Paleoceanography, Oct, Volume 13, Issue 5, p.502-516, (1998)

Reduced space optimal analysis for historical data sets: 136 years of Atlantic sea surface temperatures, Kaplan, A.; Kushnir, Y.; Cane, M. A.; Blumenthal, M. B. , Journal of Geophysical Research-Oceans, Dec 15, Volume 102, Issue C13, p.27835-27860, (1997)

Twentieth-century sea surface temperature trends, Cane, M. A.; Clement, A. C.; Kaplan, A.; Kushnir, Y.; Pozdnyakov, D.; Seager, R.; Zebiak, S. E.; Murtugudde, R. , Science, Feb 14, Volume 275, Issue 5302, p.957-960, (1997)

Mapping tropical Pacific sea level: Data assimilation via a reduced state space Kalman filter, Cane, M. A.; Kaplan, A.; Miller, R. N.; Tang, B. Y.; Hackert, E. C.; Busalacchi, A. J. , Journal of Geophysical Research-Oceans, Oct 15, Volume 101, Issue C10, p.22599-22617, (1996)

Sea level from temperature profiles in the tropical Pacific Ocean, 1975-1982, Reverdin, G.; Kaplan, A.; Cane, M. A. , Journal of Geophysical Research-Oceans, Aug 15, Volume 101, Issue C8, p.18105-18119, (1996)