Upmanu Lall

Alan & Carol Silberstein Professor of Engineering

Department of Earth and Environmental Engineering

Department of Civil Engineering & Engineering Mechanics

Senior Research Scientist

International Research Institute for Climate Prediction

Electronic Mail: ula2@columbia.edu
Phone: +1 (212) 854-8905
FAX: +1 (212) 854-7081
Office: 840 Mudd
 
U.S. Mail Address:

500 West 120th Street

Columbia University, MC 4711

New York, NY, 10027 

Degrees  |  Research Projects  | 
Research Interests  |
Teaching Experience  |Journal Publications  |

Degrees

Ph.D. in Civil Engineering, University of Texas, Austin, TX, 1981

M.S. in Civil Engineering, University of Texas, Austin, TX, 1980

B. Tech in Civil Engineering, I.I.T. Kanpur, India, 1977
 

Research Projects
Decision Support for Water Quality and Quantity Management

Western U.S. climate generation project

Hydroclimatic dynamics and long-term variability

Stochastic climate simulation

Interpolation of data across space and time

Flood frequency analysis

Subsurface description from drill log data

Synthetic streamflow simulation
 

Current Research Interests

Hydro-climate modeling

Spatial data analysis and visualization

Time series analysis and forecasting

Bayes Networks for Process Modeling and Decision Making

Risk and reliability

 Water Resource Management using Climate Information

Teaching Experience

Undergraduate: Hydrology, Water Resources Engineering, Computations And Computer Analysis, Fluid Mechanics Laboratory, Operations Research II, Systems Analysis For Civil Engineers, Water Project Analysis, Groundwater Hydrology; Earth Resources and the Environment

 

Graduate: Groundwater Hydrology, Statistics In Water Resources, Water Resource Systems Analysis, Optimization Of Large Systems, Applied Probability Theory, Statistical Decision Theory, Hydro-electric Power, Stochastic Hydrology, Groundwater Contaminant Transport, Groundwater Quantity And Quality Modeling, Spatial Hydrologic Analysis, Physical Hydrology, Low Frequency Climatic Variability, Environmental Statistics

 

Current Teaching:

Spring 2002:   EAEE1100y Earth Resources and the Environment                           U6252 Water Management and Development
 

Journal Publications

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  1. Kumar, D.N., U. Lall, and M. Peterson, Multi-site Disaggregation of Monthly to Daily Streamflow, submitted to Water Resources Research.
  2. Jain, S., U. Lall, M. Mann and B. Rajagopalan, Changes in the Midwestern U.S. Precipitation: Observations and Modeled Greenhouse Warming Scenarios, submitted to Journal of Climate.
  3. Baldwin, C. and U. Lall, Seasonality of Streamflow: the Upper Mississippi River,  Water Resources Research, April 1999.
  4. Lall, U. and A. I. Ali, A k-Nearest Neighbor Bootstrap Simulator of Pseudo-Bore Hole Logs for Subsurface Characterization, submitted to Water Resources Research.
  5. Ali, A. I. and U. Lall, Identifying Potential Preferential Paths for Subsurface Contaminant Transport Using Simulated Annealing, submitted to Water Resources Research..
  6. Rajagopalan, B. and U. Lall, A Nearest Neighbor Bootstrap for Resampling Daily Precipitation and other Weather Variables, Water Resources Research, in press.
  7. Sinha, A., B. V. Rao and U. Lall, Yield Model For Screening Multipurpose Reservoir Systems, ASCE J. of Water Resources Planning and Management, in press.
  8. Jain, S., U. Lall and R. Schaaf, Persistence And Irregularity Of Extratropical Climate: Some Insights From A Low Order Climate Model, in revision for Journal of Geophysical Research: Atmospheric Sciences.
  9. Jain, S., U. Lall and M. Mann, Seasonality and Interannual Variations of N. Hemisphere Temperature: Equator to Pole Gradient and Ocean-Land Contrast, Journal of Climate, April 1999.
  10. Sharma, A., U. Lall and D. G. Tarboton, Kernel Bandwidth Selection For A First Order Nonparametric Streamflow Simulation Model, Stochastic Hydrology and Hydraulics, 1998.
  11. Rajagopalan, B., U. Lall and D. G. Tarboton, Evaluation of Kernel Density Estimation Methods for Daily Precipitation Resampling, Stochastic Hydrology and Hydraulics, 1998.
  12. Rajagopalan, B., M. Mann and U. Lall, A Multivariate Frequency-Domain Approach to Long-Lead Climatic Forecasting, Weather and Forecasting, March 1998.
  13. Tarboton, D. G., A. Sharma A., and  U. Lall, Disaggregation procedures for stochastic hydrology based on  nonparametric density estimation, Water Resources Research, January 1998.
  14. Rajagopalan, B., U. Lall, M. Cane, Anomalous ENSO Occurrences: An Alternate View, Journal of  Climate, September 1997.
  15. Ali, A. I., and Lall, U., A Continuous Parameter Semi-Markov Model for Stratigraphic Analyses from Well Log Data, Log Analyst, September 1997.
  16. Sharma, A., D. G. Tarboton, U. Lall,  Streamflow simulation: A nonparametric approach, Water Resources Research, Feb. 1997.
  17. Ali, A. I. and U. Lall, A Kernel Estimator for Stochastic sub surface characterization from drill log data, Groundwater, May 1996.
  18. Abarbanel, H. D. I. and  U. Lall, Nonlinear Dynamics of the Great Salt Lake: system identification and prediction, Climate Dynamics, May 1996.
  19. Abarbanel, H. D. I., U. Lall, M.E. Mann, Y. Moon and T. Sangoyomi,"Nonlinear Dynamics and the Great Salt Lake: A Predictable Indicator of Regional Climate", Energy, June 1996.
  20. Moon, Y.-I. and U. Lall, "Large Scale Atmospheric Indices and the Great Salt Lake: Interannual and Interdecadal Variability", ASCE  J. of Hydrologic Eng, V.1 (2), 1996.
  21. Rajagopalan, B., U. Lall, and D. G. Tarboton, "A Nonhomogeneous Markov Model for Daily Precipitation Simulation" ,  ASCE J. of Hydrologic Engineering, V1(1), 1996.
  22. Lall, U. and A. Sharma, "A Nearest Neighbor Bootstrap for Resampling Hydrologic Time Series", Water Resources Research, March 1996.
  23. Lall, U., B. Rajagopalan and D. G. Tarboton, "A Nonparametric Wet/Dry Spell Model for Daily Precipitation."Water Resources Research, September 1996.
  24. Sangoyomi, T., U. Lall and H. D. I. Abarbanel, "Nonlinear Dynamics Of The Great Salt Lake:  Dimension Estimation, "  Water Resources Research. Jan. 1996.
  25. Lall, U., Sangoyomi, T.,  and H. D. I. Abarbanel, "Nonlinear Dynamics Of The Great Salt Lake:  Nonparametric Forecasting, "  Water Resources Research. April 1996.
  26. Rajagopalan, B., U. Lall, D. G. Tarboton and D. S. Bowles, "Multivariate Nonparametric Resampling Scheme for Generation of Daily Weather Variables", Stoch. Hydr. and Hydraulics, 1997.
  27. Lall, U. and K. Bosworth, "Nonparametric Statistical Inference And Function Estimation For Hydrologic Space Time Data", Trends in Hydrology, CSRI, Ed. J. Menon, 1995.
  28. Lall, U. and M. Mann, "The Great Salt Lake: A Barometer of Interannual Climatic Variability."   Water Resources Research., Oct. 1995.
  29. Moon, Y., B. Rajagopalan and U. Lall, "Estimation of Mutual Information Using Kernel Density Estimators ",  Physical Review E, September 1995.
  30. Lall, U., "Nonparametric Function Estimation: Recent Hydrologic Contributions", Reviews of Geophysics, Contributions in Hydrology, U.S. National Report to the IUGG 1991-1994, June 1995.
  31. Kshirsagar, M. M. , B. Rajagopalan and U. Lall, "Optimal Parameter Estimation for Muskingum Routing with Ungauged Lateral Inflow ", J. of Hydrology , V. 169, 1995.
  32. Rajagopalan, B. and U. Lall, "Seasonality of precipitation along a meridian in the Western U.S.", Geophysical Research Letters, May. 1995.
  33. Mann, M., U. Lall and B. Saltzman, "Decadal and Secular Climate Variability: Understanding the Rise and Fall of the Great Salt Lake."  Geophysical Research Letters, Apr 1995.
  34. Lall, U., " A Yield Model for Screening Surface and Ground Water Development.", ASCE J. of Water Resources Planning and Management , Jan. 1995.
  35. Rajagopalan, B. and U. Lall, "A Kernel Estimator for Discrete Distributions,"  J. of Nonparametric Statistics, Jan. 1995.
  36. Rajagopalan, B., Lall, U., & Tarboton, D. G., " A Nonparametric Renewal Model for Modeling Daily Precipitation."   in Time Series Analysis and Forecasting, ed. K. Hipel, Kluwer, 1994.
  37. Lall, U., and K. Bosworth, "  Multivariate Kernel Estimation of Functions of Space and Time Hydrologic Data.", in Time Series Analysis and Forecasting, ed. K. Hipel, Kluwer, 1994.
  38. Moon, Y. and U. Lall, "A Kernel Quantile Function Estimator For Flood Frequency Analysis", in Extreme Values: Floods and Droughts, ed. K. Hipel, Kluwer, 1994.
  39. Ali, A. I. and U. Lall, "Stratigraphic Interpretation from Drill Log Data", in  Stochastic Differential Equations with Applications in Hydrology,  ed. K. Hipel, Kluwer, 1994.
  40. Moon, Y. and U. Lall, "A Kernel Quantile Function Estimator  For Flood Frequency Analysis."  Water Resources Research, Nov. 1994.
  41. Bosworth, K., and U. Lall, "An L_1 Smoothing Spline Algorithm with Cross Validation",   Numerical Algorithms, (5) 1993.
  42. Lall, U., Y. Moon, and K. Bosworth, "Kernel Flood Frequency Estimators: Bandwidth Selection and Kernel Choice." Water Resources Research , April 1993.
  43. Moon, Y., U. Lall, and K. Bosworth, "A Comparison of Tail Probability Estimators for Flood Frequency Analysis." Journal of Hydrology , V. 151, 1993.
  44. Lall, U. and Y-C. Lin, " A groundwater management model for Salt Lake County, Utah with some water rights and water quality considerations", Journal of Hydrology, 123 (1991).
  45. Lall, U., and Santini, M. D., " An optimization model for stratified aquifer systems", Journal of Hydrology, V. 111 , 1989.
  46. Ghosh, S. and U. Lall, "Kinetics of Anaerobic Digestion of Solid Substrates", Proc. of  Intl. Assoc. on Water Pollution Research and Control Conference, AD-88, Bologna, Italy, May 22-28, 1988.
  47. Lall, U. and C. Miller, "An Optimization Model for Multi-Purpose, Multi-Reservoir Screening, with Explicit Yield Reliability Consideration", Water Resources Research, July 1988.
  48. Elwell, B. O.  and U. Lall, "A model for optimal aquifer yield determination, considering water rights and water quality", Journal of Hydrology , V. 104, 1988.
  49. Lall, U., and J. D. Olds," A Parameter Estimation Model for Ungaged Streamflows",  Journal of Hydrology, Vol. 92, 1987.
  50. Lall, U., "Estimation of a Prior Distribution for Skews for the Pearson III Distribution", Hydrologic Frequency Modeling,  Ed. V. P. Singh, 1987.
  51. Lall, U.," Project Risk considering Sampling Uncertainties and a Finite Project Operation Period", Application of Frequency and Risk in Water Resources, Ed. V. P. Singh, 1987.
  52. Yu, J.C. and U. Lall, "A System/Route Optimization Model for Minimizing Urban Transit Operating Deficits", Transportation Research Record, 1013, September 1985.
  53. Lall, U. and L.E. Sorenson, "Inference of Mining Impacts on Groundwater through  Numerical Models", Proc. of the NWWA Conference on Impacts of Mining on  Ground Water, Denver, CO, August 1984.
  54. Lall, U., "A Model for Optimal Dewatering of Open Pit Mines", Regional and State Water Res. Plng. & Mgmt., Proc. of the 19th.  Annual AWRA Symposium, San Antonio, TX , 1984.
  55. Lall, U. and L.R. Beard, "Estimation of Pearson III Moments", Water Resources Research, October 1982.
  56. Lall, U. and L.W. Mays, "Mathematical Models for Planning Water and Energy Systems", Water Resources Research, August 1981.
  57. Ali, A.I. and U. Lall, Continuous Parameter Nonhomogeneous Semi-Markov Model for Stratigraphic Analyses from Well Log Data, UWRL Report 96-, 1996.