manu

Upmanu Lall                                                               

Alan & Carol Silberstein Professor of Engineering

Department of Earth and Environmental Engineering

Department of Civil Engineering & Engineering Mechanics

Director, Columbia Water Center

Senior Research Scientist, International Research Institute for Climate & Society

 
 
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

918 Mudd, Dept. of Earth & Environmental Eng.

Columbia University, MC 4711

New York, NY, 10027

Dr. Upmanu Lall is a leading expert on hydroclimatology, climate change adaptation, risk analysis and mitigation. His research has emphasized hydrology, water resource systems analysis, operations research and stochastic processes with applications to flood/drought risk and uncertainty assessment and the design and operation of water systems. He has pioneered the application of techniques from (a) nonlinear dynamical systems,  (b) nonparametric methods of function estimation and their application to spatio-temporal dynamical systems, and (c) the study of multi-scale  climate variability and change as an integral component of hydrologic systems. As new knowledge was created in these areas, he has focused on its application to water resources management through innovation in adaptive or dynamic risk management methods that can use information on the structure of climate for simulation or forecasting. Recently, he has become concerned with the issue of global and regional water sustainability, and the more general issue of modeling and managing planetary change due to coupled human and natural dynamics. He is developing technical and policy tools for the projection and management of environmental change as part of a quantitative approach to sustainability of earth systems.

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, 1976

 

Current Research Interests

Global Water Security

 Hydro-climate modeling

Time series analysis and forecasting

Bayes Networks for Process Modeling and Decision Making

Risk and reliability

 Water Resource Management using Climate Information

 

Current Research Projects

 

1.      Climate Predictability of Extreme Floods with  Y. Kushnir, A Robertson,J. Nakamura

2.      CCRUN:  Climate Change RISA in Urban Areas, C. Rosenzweig (PI) with U. Lall, P. Kinney, S. Someshwar & L. Goddard, R. Chen, and Y.  Kushnir

3.      Reconstructing Climate From Tree Ring Data A. Gelman (PI), with E. Cook and U. Lall

4.      Paleoclimate Shocks:Environmental Variability,Human Vulnerability, and Social Adaptation During The Last Millennium In The Greater Mekong Basin, Buckley, B., (PI); with Anchukaitis,K., Cook, B., Heikkila, T., Lall,U., Cook, E., Levy, M

5.      Improving rural water and livelihood outcomes in India, China, Africa, and Brazil,  with T. Heikkila, V. Modi, J. Sachs

6.      Sustainable Development of Water Resources in Ethiopia: Learning from doing in Koraro,  with P. Block

7.      Climate-Informed Adaptive Management and Planning to Meet Urban Water Supply and Flood Mitigation Goals in the Delaware River Basin, G. Gong (PI) with C. Brown, P. Kolesar and U. Lall

8.      Water Security in Asia: Meeting the Challenge through Infrastructure Development & Climate Risk Management, J. Sachs (PI), with C. Brown, T. Heikkila, U. Lall and T. Siegfried

9.      How Can the Contribution of Climate Variability, Water Release Patterns, and Hydrologic Performance Indices towards Ecological Restoration Measures at the Everglades National Park be Best Quantified and Predicted?

 

Teaching:

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; A Better Planet by Design

 

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, Water Management & Development
 

Journal Publications:

1.      Somkiat Apipattanavis, Balaji Rajagopalan, and Upmanu Lall, 2010, Local Polynomial Based Flood Frequency Estimator for Mixed Population, ASCE J. of Hydrologic Engineering, dx.doi.org/10.1061/(ASCE)HE.1943-5584.0000242.

2.      Narula, KK and U. Lall, 2010, Challenges in Securing India's Water Future, J. of Crop Improvement, Volume 24, Issue 1 January 2010 , pages 85 – 91.

3.      Nakamura, J., U. Lall, Y. Kushnir, and SJ Camargo, 2009, Classifying North Atlantic Tropical Cyclone Tracks by Mass Moments, J. of Climate, 15 Oct 2009, 5481-5494.

4.      Hyun-Han Kwon,  Francisco de Assis de Souza Filho, Liqiang Sun, Paul Block, Upmanu Lall  and Dirceu S.(2010), Assessment of Uncertainty of Hydrologic Model and Climate Forecast Model in Northern Brazil, Journal of America Water Resources Association, under review

5.      Hyun-Han Kwon, Abedalrazq F. Khalil and Upmanu Lall(2010), Nonhomogeneous Hidden Markov based Daily Rainfall Simulation Using Seasonal Climate Forcing: Application to Everglades National Park, Florida, Water Resources Research, under review.

6.      Hyun-Han Kwon, Upmanu Lall and Vic Engel(2010), Predicting wading bird populations in the Everglades National Park from seasonal hydrologic statistics, Ecology, under review.

7.      C. Lima and U. Lall, (2010): Climate Informed Long Term Seasonal Forecasts of Hydroenergy Inflow for the Brazilian Hydropower system, Journal of Hydrology 381, pp.65-75.

8.      C. Lima and U. Lall, (2010): Spatial Scaling in a Changing Climate: A Hierarchical Bayesian Model for Nonstationary Multi-site Annual Maximum and Monthly Streamflow, in Press, Journal of Hydrology.

9.      C. Lima and U. Lall, (2010): Climate informed monthly streamflow forecasts for the Brazilian hydropower network using a periodic ridge regression model , Journal of Hydrology 380, pp.438-449.

10.  Sankarasubramanian, A., U. Lall, F.D.Souza Filho, A.Sharma,Improved Water Allocation utilizing Probabilistic Climate Forecasts: Short Term Water Contracts in a Risk Management Framework, Water Resources Research, 45, W11409, doi:10.1029/2009WR007821, 2009

11.  Sankarasubramanian, A., U. Lall, N.Devineni and S. Espunevea,Utility of Operational Streamflow Forecasts in Improving within-season Reservoir Operation,Journal of Applied Climatology & Meteorology,48(7), 1464–1482, 2009.

12.  Westra, S., C. Brown, U. Lall, I Koch, A Sharma, 2010, Interpreting variability in global SST data using independent component analysis and principal component analysis, International Journal of Climatology,  30(3), 333-346

13.  C. Lima and U. Lall, (2009): Hierarchical Bayesian Modeling of Multisite Daily Rainfall Occurrence: rainy season onset, peak and end, Water Resources Research, V. 45, W07422

14.   C. Lima, U. Lall, T. Jebara and A. G. Barnston, (2009): Statistical Prediction of ENSO from Subsurface Sea Temperature Using a Nonlinear Dimensionality Reduction, Journal of Climate, V22.

15.  Li, Pei-Hao, Hyun-Han Kwon, Liqiang Sun, Upmanu Lall, and Jehng-Jung Kao, 2009, A Support Vector Machine Based Prediction Model on Streamflow at the Shihmen Reservoir, Taiwan, International J. of Climatology, DOI: 10.1002/joc.1954.

16.  Chandra Kiran B Krishnamurthy, Upmanu Lall, Hyun-Han Kwon (2009) Changing Frequency and Intensity of Rainfall Extremes Over India, Journal of Climate, Vo. 22(18), pp. 4737-4746.

17.  Hyun-Han Kwon, Upmanu Lall, (2009), Simulation of Daily Rainfall Scenarios with Interannual and Multidecadal Climate Cycles for South Florida, Stochastic Environmental Research and Risk Assessment, DOI 10.1007/s00477-008-0270-2.

18.  Hyun-Han Kwon, Casey Brown, Kaiqin Xu and Upmanu Lall (2009), Seasonal and Annual Maximum Streamflow Forecasting using Climate Information: Application to the Three Gorges Dam in the Yangtze River Basin, Hydrological Sciences Journal, 54(3), 582-595.

19.  Pei-Hao Li, Hyun-Han Kwon, Liqiang Sun, Upmanu Lall, Jehng-Jung Kao(2009), A Support Vector Machine Based Prediction Model on Streamflow at the Shihmen Reservoir, Taiwan, International Journal of Climatology, under review.

20.   Hyun-Han Kwon, Casey Brown and Upmanu Lall (2008), Climate informed flood frequency analysis and prediction in Montana using hierarchical Bayesian modeling, Geophys. Res. Lett., 35, doi:10.1029/2007GL032220

21.  Prairie, J., Nowak, K. Rajagopalan,  B., Lall, U. and Fulp, T., (2008) "A stochastic nonparametric approach for streamflow generation combining observational and paleo reconstructed data." Water Resources Research, 44, W06423, doi:10.1029/2007WR006684.

22.  Kwon , Hyun-Han,  U Lall and V Engel, 2010, Predicting numbers of wading birds foraging in Everglades National Park from seasonal hydrologic statistics, Water Resources Research, submitted.

23.  Ames, D., and U. Lall, 2008, North Pacific Ocean Climate Connections to Streamflow in the Yakima River, J. of the American Water Resources Association, submitted.

24.  Souza Filho, F. A., U. Lall and R. L. Porto, 2008, The role of price and enforcement in water allocation: insights from Game Theory, Water Resources Research, Dec 2008.

25.  Sveinsson, O.G.B., U. Lall, J. Gaudet, Y. Kushnir, S. Zebiak, and V. Fortin, 2008, Analysis of Climatic States and Atmospheric Circulation Patterns that influence Quebec Spring Streamflows, ASCE J. of Hydrologic Engineering, June 2008

26.  Sveinsson, O.G.B., U. Lall, V. Fortin, L. Perrault, J. Gaudet, S. Zebiak, and Y. Kushnir, 2008, Forecasting spring reservoir inflows in Churchill Falls Basin in Quebec, Canada, ASCE J. of Hydrologic Engineering, June 2008.

27.  Lall U., Heikkila T., Brown C., Siegfried T., 2008, Water In The 21st Century: Defining The Elements Of Global Crises And Potential Solutions , Journal of International Affairs, Spring/Summer 2008, Vol. 61(2), 1-17.

28.  Broad, K., A.Pfaff, R.Taddei, A.Sankarasubramanian and U.Lall,2007, Climate, Streamflow Prediction and Water Management in North East Brazil,Climatic Change, DOI 10.1007/s10584-007-9257-0, 2007.

29.  Ames, D.P., and U. Lall, 2008, Developing Total Maximum Daily Loads under Uncertainty: Decision Analysis and the Margin of Safety, Journal of Contemporary Water Research & Education, Issue 140, Pages 37-52, September 2008

30.  Young-Il Moon, Upmanu Lall and Hyun-Han Kwon, 2008, Nonparametric Short Term Forecasts of The Great Salt Lake Using Atmospheric Indices, International Journal of Climatology, Volume 28, Issue 3, Date: 15 March 2008, Pages: 361-370

31.  Westra S., A. Sharma, C. Brown, U. Lall (2008), Multivariate streamflow forecasting using independent component analysis, Water Resour. Res., 44, W02437, doi:10.1029/2007WR006104

32.  Kwon H.-H., C. Brown, U. Lall (2008), Climate informed flood frequency analysis and prediction in Montana using hierarchical Bayesian modeling, Geophys. Res. Lett., 35, L05404, doi:10.1029/2007GL032220. 

33.  Sankarasubramanian, A., U. Lall, and S. Espinueva, 2008: Role of Retrospective Forecasts of GCMs Forced with Persisted SST Anomalies in Operational Streamflow Forecasts Development. J. Hydrometeor., 9, 212–227.

34.  Prairie J., B. Rajagopalan, U. Lall, T. Fulp , 2007, A stochastic nonparametric technique for space-time disaggregation of streamflows, Water Resour. Res., 43, W03432, doi:10.1029/2005WR004721. 

35.  Kwon H.-H., U. Lall, A. F. Khalil, 2007, Stochastic simulation model for nonstationary time series using an autoregressive wavelet decomposition: Applications to rainfall and temperature, Water Resour. Res., 43, W05407, doi:10.1029/2006WR005258.

36.  Westra S., C. Brown, U. Lall, A. Sharma,2007, Modeling multivariable hydrological series: Principal component analysis or independent component analysis?, Water Resour. Res., 43, W06429, doi:10.1029/2006WR005617

37.  Khalil A. F., H.-H. Kwon, U. Lall, M. J. Miranda, J. Skees (2007), El Niño–Southern Oscillation–based index insurance for floods: Statistical risk analyses and application to Peru, Water Resour. Res., 43, W10416, doi:10.1029/2006WR005281.

38.  Xu K,  Brown C,  Kwon H,  Lall U,  Zhang J,  Hayashi S,Chen Z (2007) Climate teleconnections to Yangtze river seasonal streamflow at the Three Gorges Dam, China. International Journal of Climatology 27(6): 771.

39.  Lall, U., K. Czuchlewski, and P. Ceccato, 2006, Prospects for Integrating Remote Sensing and Hydroclimate Forecasts of the Monsoon for Improved Adaptation to Climate Risks in India Short Title: Managing Monsoon Floods and Droughts in India, Research and  Economic Applications of Remote Sensing Data Products, AGU Monograph, (submitted).

40.  Brown, C. and U. Lall., 2006,  Water and Economic Development:  The Role of Interannual Variability and a Framework for Resilience, Natural Resources Forum Volume 30, Issue 4, Page 306-317, Nov 2006, doi: 10.1111/j.1477-8947.2006.00118.x

Also appears in:
Natural Resources Forum, November 2007, Volume 31 VIRTUAL ISSUE: Climate Change

41.  Lall U., Y.-I. Moon, H.-H. Kwon, K. Bosworth, 2006, Locally weighted polynomial regression: Parameter choice and application to forecasts of the Great Salt Lake, Water Resour. Res., 42, W05422, doi:10.1029/2004WR003782

42.  Kwon H.-H., U. Lall, Y.-I. Moon, A. F. Khalil, H. Ahn , 2006, Episodic interannual climate oscillations and their influence on seasonal rainfall in the Everglades National Park, Water Resour. Res., 42, W11404, doi:10.1029/2006WR005017. 

43.  Greene, A. M., L. Goddard, and U. Lall, 2006, Performance-based multimodel climate change scenarios 1: Low-frequency temperature variations, Journal of Climate, Volume 19, Issue 17 (September 2006) pp. 4326–4343, DOI: 10.1175/JCLI3864.1

44.  Brown, C .,  P.  Rogers, U. Lall, 2006, Demand management of groundwater with monsoon forecasting, Agricultural Systems, Volume 90, Issues 1-3, , October 2006, Pages 293-311.

45.  Regonda S. K., B. Rajagopalan, U. Lall, M. Clark and Y. Moon, 2005, Local polynomial method for ensemble forecast of time series, Nonlinear Geophysics, 12, 397-406.

46.  Asefa T., M. Kemblowski , U. Lall  and G. Urroz, 2005, Support Vector Machines for Nonlinear State Space Reconstruction: Application to the Great Salt Lake Time Series, Water Resources Research, 41(12) W12422, doi:10.1029/2004WR003785.

47.  Ames DP, BT Neilson,DK Stevens, U. Lall, 2005, Using Bayesian networks to model watershed management decisions: an East Canyon Creek case study, J.  Of Hydroinformatics, 7 (4): 267-282

48.  Jagtap, S. S., U. Lall, J. W. Jones, A. J. Gijsman, J. T. Ritchie, 2004, Dynamic Nearest-Neighbor Method For Estimating Soil Water Parameters, Transactions of the ASAE. Vol. 47(5): 1437-1444

49.  Hellweger, F. L., and U. Lall, 2004. Arsenic Transformation by Algae in Lake Biwa. Environ. Sci. Technol., 38, 6716-6723.

50.  Hellweger, F. L., C. Small, P. Schlosser, U. Lall, and J. K. Weissel, 2004. Use of Satellite Imagery for Water Quality Studies in New York Harbor. Estuarine Coastal Shelf Sci., 61(3), 437-448.

51.  Hellweger, F. L., A. F. Blumberg, P. Schlosser, D. T. Ho, T. Caplow, U. Lall, and H. Li, 2004. Transport in the Hudson Estuary: A modeling study of estuarine circulation and tidal trapping. Estuaries, 27(3), 527-538

52.  Robertson A.R.W., 2004, Upmanu Lall, Stephen E. Zebiak and Lisa Goddard, Improved Combination of Multiple Atmospheric GCM Ensembles for Seasonal Prediction, Monthly Weather Review, 132, 2732-2744.

53.  Lall, U., and F. A. DeSouza, Filho, 2004, Water Resource Management under Changing Climate: Role of Seasonal Forecasts, Water Resources Impact 6(3), July 2004, 7-10.

54.  DeSouza, Filho, F. A., and U. Lall, Seasonal to Interannual Ensemble Streamflow Forecasts for Ceara, Brazil: Applications of a Mutlivariate, Semi-Parametric Algorithm, Water Resources Research, Nov 2003, 39(11), 1307-1321.

55.  Sankarsubramanium, A., and U. Lall, Flood quantiles and changing climate: Seasonal Forecasts and Causal relations, Water Resources Research, May 2003, 39(5), 1154-1165.

56.  Hellweger, F. L., K. J. Farley, U. Lall, and D. M. Di Toro, 2003. Greedy Algae Reduce Arsenate. Limnol. Oceanogr., 48, 2275-2288.

57.  Apipattanavis, S., B. Rajagopalan, and U. Lall, Local Polynomial Technique for Flood Frequency Analysis, ASCE Journal of Hydrologic Engineering. (accepted)

58.  Sharma, A., and U. Lall, 2003, Using model averaged probabilistic forecasts for water resources management. MODSIM 2003, D. A. Post, editor. MSSANZ Inc., Townsville, Australia. Pages 118-123.

59.  Arumugam, S., A. Sharma, and U. Lall. 2003. Water allocation for multiple uses based on probabilistic reservoir inflow forecasts. IAHS 2003, G. Bloschl, editor. IAHS Press, Sapporo, Japan. Pages 184-191

60.  Pizarro, G., and U. Lall, El Niño and Floods in the US West: What can we expect?, EOS, Transactions of the AGU, 83(32), 349-352, 2002.

61.  Lall, U., Visionary Reflections From A Crystal Clear Pool Of Water Scientists, Water Resources Update,123, 13-20, 2002.

62.  Rajagopalan, B., U. Lall, and S.  E. Zebiak, Categorical Climate Forecasts through Regularization and Optimal Combination of Multiple GCM Ensembles. Mon. Wea. Rev., 130 (7), 1792-1811, 2002

63.  Jain, S., and U. Lall,  Floods in a Changing Climate: Does the Past Represent the Future?, Water Resources Research, 37(12),   3193-3206, 2001

64.  Jain, S. and U. Lall, The Magnitude and Timing of Annual Maximum Floods: Trends and Large-Scale Climatic Associations for the Blacksmith Fork River, Utah, Water Resources Research, 3641-3652, 36(12), 2000 .

65.  Kumar, D.N., U. Lall, and M. Peterson, Multi-site Disaggregation of Monthly to Daily Streamflow, Water Resources Research, 36(7), 1823-1834, 2000.

66.  Sharma, A., and U.Lall, A nonparametric approach for daily rainfall simulation, Mathematics and Computers in Simulation, 48, 361-371, 1999.

67.  Rajagopalan, B., and U. Lall, Nearest Neighbor Local Polynomial Estimation of Spatial Surfaces, Spatial Interpolation Comparison Contest 1997, Journal of Geographic  Information and Decision Analysis, 2(2), 48-57, 1998.

68.  Rajagopalan, B., U. Lall, and M. Cane, Comment on “Reply to the comments of Trenberth  and Hurrell”, Bulletin of the American Meteorological Society, 80, 2724-2726, 1999.

69.  Sharma, A.., K. C. Luk, I. Cordery and U. Lall, Seasonal to interannual rainfall ensemble forecasts for improved water supply management: 2 - Predictor Identification of quarterly rainfall using ocean-atmosphere information, Journal of Hydrology, 239(1-4), 240-248, 2000.

70.  Stevens, D. K., U. Lall, J. D. Stednick, R. Ward, A. Mckay and J. Tracy, Water Quality Monitoring Requirements for TMDL Development in the Western United States, Water Resources Impact, October 1999.

71.  Rajagopalan, B., E. Cook, U. Lall, and B.K. Ray. Spatio-Temporal Variability of ENSO and SST Teleconnections to Summer Drought over the U.S.A. during the Twentieth Century. Journal of Climate, 13(24), 4244-4255, 2000.

72.  Baldwin, C. and U. Lall, Seasonality of Streamflow: the Upper Mississippi River,  Water Resources Research, 35(4), 1143-1154, 1999.

73.  Rajagopalan, B. and U. Lall, A Nearest Neighbor Bootstrap for Resampling Daily Precipitation and other Weather Variables, Water Resources Research, 35(10), 3089-3101, 1999.

74.  Sinha, A., B. V. Rao and U. Lall, Yield Model For Screening Multipurpose Reservoir Systems, ASCE J. of Water Resources Planning and Management, 125(6), 325-332, 1999.

75.  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, A12(4), 1086-1100,1999.

76.  Sharma, A., U. Lall and D. G. Tarboton, Kernel Bandwidth Selection For A First Order Nonparametric Streamflow Simulation Model, Stochastic Hydrology and Hydraulics, 12, 33-52, 1998.

77.  Rajagopalan, B., U. Lall and D. G. Tarboton, Evaluation of Kernel Density Estimation Methods for Daily Precipitation Resampling, Stochastic Hydrology and Hydraulics, 11(6), 523-547, 1998.

78.  Rajagopalan, B., and U. Lall, “Low Frequency Variability in Western U.S. Precipitation”, Journal of Hydrology, 210, 51-67, 1998.

79.  Rajagopalan, B., M. Mann and U. Lall, A Multivariate Frequency-Domain Approach to Long-Lead Climatic Forecasting, Weather and Forecasting, 13(1), 58-74,1998.

80.  Tarboton, D. G., A. Sharma A., and  U. Lall, Disaggregation procedures for stochastic hydrology based on  nonparametric density estimation, Water Resources Research, 34(1), 107-119, 1998.

81.  Rajagopalan, B., U. Lall, M. Cane, Anomalous ENSO Occurrences: An Alternate View, Journal of Climate, 10(9), 2351-2357, 1997.

82.  Ali, A. I., and Lall, U.  , A Continuous Parameter Semi-Markov Model for Stratigraphic Analyses from Well Log Data, Log Analyst, 39(2), 26-37, 1998.

83.  Sharma, A., D. G. Tarboton, U. Lall,  Streamflow simulation: A nonparametric approach, Water Resources Research, 33(2), 291-308, 1997.                        

84.  Ali, A. I. and U. Lall, A Kernel Estimator for Stochastic sub surface characterization from drill log data, Groundwater, 34(4), 647-658, 1996.

85.  Abarbanel, H. D. I. and  U. Lall, Nonlinear Dynamics of the Great Salt Lake: system identification and prediction, Climate Dynamics, 12(4), 287-297, 1996.

86.  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, 21(7-8), 655-665, 1996.

87.  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), 55-62, 1996.

88.  Rajagopalan, B., U. Lall, and D. G. Tarboton, "A Nonhomogeneous Markov Model for Daily Precipitation Simulation" ,  ASCE J. of Hydrologic Engineering, 1(1), 33-40, 1996.

89.  Lall, U. and A. Sharma, "A Nearest Neighbor Bootstrap for Resampling Hydrologic Time Series", Water Resources Research, 32(3), 679-693, 1996.

90.  Lall, U., B. Rajagopalan and D. G. Tarboton, "A Nonparametric Wet/Dry Spell Model for Daily Precipitation."Water Resources Research, 32(9), 2803-2823 1996.

91.  Sangoyomi, T., U. Lall and H. D. I. Abarbanel, "Nonlinear Dynamics Of The Great Salt Lake:  Dimension Estimation, "  Water Resources Research. 32(1), 149-159, 1996.

92.  Lall, U., Sangoyomi, T.,  and H. D. I. Abarbanel, "Nonlinear Dynamics Of The Great Salt Lake:  Nonparametric Forecasting, "  Water Resources Research. 32(4), 975-985, 1996.

93.  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, 11(1), 65-93,1997.

94.  Lall, U. and K. Bosworth, "Nonparametric Statistical Inference And Function Estimation For Hydrologic Space Time Data", Trends in Hydrology, CSRI, Ed. J. Menon, 1995.

95.  Lall, U. and M. Mann, "The Great Salt Lake: A Barometer of Interannual Climatic Variability."   Water Resources Research., 31(10), 2503-2515, 1995.

96.  Moon, Y., B. Rajagopalan, and U. Lall., “Estimation of Mutual Information Using Kernel Density Estimators”, Physical Review E, 52(n3B), 2318-2321, 1995.

97.  Lall, U., "Nonparametric Function Estimation: Recent Hydrologic Contributions", Reviews of Geophysics, Contributions in Hydrology, U.S. National Report to the IUGG 1991-1994, 1093-1099, 1995.

98.  Kshirsagar, M. M. , B. Rajagopalan and U. Lall, "Optimal Parameter Estimation for Muskingum Routing with Ungauged Lateral Inflow ", J. of Hydrology , 169, 25-35, 1995.

99.  Rajagopalan, B. and U. Lall, "Seasonality of precipitation along a meridian in the Western U.S.", Geophysical Research Letters, 22(9),  1081-1084, 1995.

100.                      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, 22(8), 937-940, 1995.

101.                      Lall, U., " A Yield Model for Screening Surface and Ground Water Development.", ASCE J. of Water Resources Planning and Management , 121(1), 9-22,  1995.

102.                      Rajagopalan, B. and U. Lall, "A Kernel Estimator for Discrete Distributions,"  J. of Nonparametric Statistics, 4,  409-426, 1995.

103.                      Moon, Y. and U. Lall, "A Kernel Quantile Function Estimator  For Flood Frequency Analysis."  Water Resources Research, 30(11), 3095-3103, 1994.

104.                      Bosworth, K., and U. Lall, "An L_1 Smoothing Spline Algorithm with Cross Validation",   Numerical Algorithms, 5, 407-417,  1993.

105.                      Lall, U., Y. Moon, and K. Bosworth, "Kernel Flood Frequency Estimators: Bandwidth Selection and Kernel Choice." Water Resources Research ,  29(4), 1003-1016, 1993.

106.                      Moon, Y., U. Lall, and K. Bosworth, "A Comparison of Tail Probability Estimators for Flood Frequency Analysis." Journal of Hydrology , 151, 343-363, 1993.

107.                      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, 367-393, 1991.

108.                      Lall, U., and Santini, M. D., " An optimization model for stratified aquifer systems", Journal of Hydrology, 111 , 145-162, 1989.

109.                      Lall, U. and C. Miller, "An Optimization Model for Multi-Purpose, Multi-Reservoir Screening, with Explicit Yield Reliability Consideration", Water Resources Research, 24(7), 953-968, 1988.

110.                      Elwell, B. O.  and U. Lall, "A model for optimal aquifer yield determination, considering water rights and water quality", Journal of Hydrology , 104, 273-287, 1988.

111.                      Lall, U., and J. D. Olds," A Parameter Estimation Model for Ungaged Streamflows",  Journal of Hydrology, 92(3-4), 245-262, 1987.

112.                      Yu, J.C. and U. Lall, "A System/Route Optimization Model for Minimizing Urban Transit Operating Deficits", Transportation Research Record, 1013, 9-19,  1985.

113.                      Lall, U. and L.R. Beard, "Estimation of Pearson III Moments", Water Resources Research, 18(5), 1563-1569, 1982.

114.                      Lall, U. and L.W. Mays, "Mathematical Models for Planning Water and Energy Systems", Water Resources Research, 17(4), 853-865, 1981.