Assessing the Skill of an All-Season Statistical Forecast Model for the Madden–Julian Oscillation

Abstract Motivated by an attempt to augment dynamical models in predicting the Madden–Julian oscillation (MJO), and to provide a realistic benchmark to those models, the predictive skill of a multivariate lag-regression statistical model has been comprehensively explored in the present study. The predictors of the benchmark model are the projection time series of the leading pair of EOFs of the combined fields of equatorially averaged outgoing longwave radiation (OLR) and zonal winds at 850 and 200 hPa, derived using the approach of Wheeler and Hendon. These multivariate EOFs serve as an effective filter for the MJO without the need for bandpass filtering, making the statistical forecast scheme feasible for the real-time use. Another advantage of this empirical approach lies in the consideration of the seasonal dependence of the regression parameters, making it applicable for forecasts all year-round. The forecast model exhibits useful extended-range skill for a real-time MJO forecast. Predictions with a ...

[1]  C. Jones,et al.  Prediction skill of the Madden and Julian Oscillation in dynamical extended range forecasts , 2000 .

[2]  W. Kessler.  EOF Representations of the Madden–Julian Oscillation and Its Connection with ENSO* , 2001 .

[3]  Andrew M. Moore,et al.  Stochastic forcing of ENSO by the intraseasonal oscillation , 1999 .

[4]  H. Storch,et al.  Principal oscillation pattern analysis of the tropical 30- to 60-day oscillation , 1991 .

[5]  Arun Kumar,et al.  Modeling, Simulation, and Forecasting of Subseasonal Variability , 2003 .

[6]  C. Duchon.  Lanczos Filtering in One and Two Dimensions , 1979 .

[7]  Duane E. Waliser,et al.  South Asian monsoon , 2005 .

[8]  Dennis L. Hartmann,et al.  Modulation of Eastern North Pacific Hurricanes by the Madden-Julian Oscillation , 2000 .

[9]  Thomas M. Smith,et al.  An Improved In Situ and Satellite SST Analysis for Climate , 2002 .

[10]  Robert F. Cahalan,et al.  Sampling Errors in the Estimation of Empirical Orthogonal Functions , 1982 .

[11]  Harry H. Hendon,et al.  Empirical Extended-Range Prediction of the Madden–Julian Oscillation , 2000 .

[12]  M. Kanamitsu,et al.  NCEP–DOE AMIP-II Reanalysis (R-2) , 2002 .

[13]  Peter J. Webster,et al.  PREDICTION OF MONSOON RAINFALL AND RIVER DISCHARGE ON 15-30-DAY TIME SCALES , 2004 .

[14]  Michael B. Richman,et al.  REVIEW ARTICLE ROTATION OF PRINCIPAL COMPONENTS , 1986 .

[15]  Part II: The prediction of equatorial velocity potential and its skill , 1991 .

[16]  Duane E. Waliser,et al.  Intraseasonal Variability in the Atmosphere-Ocean Climate System , 2005 .

[17]  Hans von Storch,et al.  Principal Oscillation Pattern Analysis of the Tropical 30- to 60- day Oscillation - Part I: Definition of an Index and its Prediction , 1990 .

[18]  H. Hendon,et al.  The Intraseasonal (30–50 day) Oscillation of the Australian Summer Monsoon , 1990 .

[19]  B. Liebmann,et al.  Description of a complete (interpolated) outgoing longwave radiation dataset , 1996 .

[20]  M. Richman,et al.  Rotation of principal components , 1986 .

[21]  Elizabeth Ann Maharaj,et al.  Forecasting an index of the Madden‐oscillation , 2005 .

[22]  K. Weickmann.  Intraseasonal Circulation and Outgoing Longwave Radiation Modes During Northern Hemisphere Winter , 1983 .

[23]  K. Mo,et al.  Intraseasonal Modulation of Summer Precipitation over North America , 2000 .

[24]  John E. Kutzbach,et al.  Empirical Eigenvectors of Sea-Level Pressure, Surface Temperature and Precipitation Complexes over North America , 1967 .

[25]  Christopher R. Winkler,et al.  A Linear Model of Wintertime Low-Frequency Variability. Part I: Formulation and Forecast Skill , 2001 .

[26]  M. Wheeler,et al.  Australian-Indonesian monsoon , 2005 .

[27]  Duane E. Waliser,et al.  A Statistical Forecast Model of Tropical Intraseasonal Convective Anomalies , 2004 .

[28]  Li Tao,et al.  Impact of Atmosphere-Ocean Coupling on the Predictability of Monsoon Intraseasonal Oscillations , 2007 .

[29]  M. Mcphaden,et al.  Genesis and evolution of the 1997-98 El Nino , 1999, Science.

[30]  P. R. Julian,et al.  Observations of the 40-50-day tropical oscillation - a review , 1994 .

[31]  S. Schubert,et al.  Tec hnical Report Series on Global Modeling and Data Assimilation Volume 23 Prospects for Improved Forecasts of Weather and Short-Term Climate Variability on Subseasonal (2 Week to 2 Month) Time Scales , 2002 .

[32]  R. Higgins,et al.  Intercomparison of the Principal Modes of Interannual and Intraseasonal Variability of the North American Monsoon System , 2001 .

[33]  Dennis L. Hartmann,et al.  An Observational Study of Tropical–Midlatitude Interaction on Intraseasonal Time Scales during Winter , 1984 .

[34]  Suranjana Saha,et al.  Frequency Dependence in Forecast Skill , 1990 .

[35]  H. Storch,et al.  Principal oscillation pattern analysis of the 30- to 60-day oscillation in the tropical troposphere , 1990 .

[36]  W. Kessler,et al.  Rectification of the Madden-Julian Oscillation into the ENSO Cycle. , 2000 .

[37]  The Experimental MJO Prediction Project , 2006 .

[38]  Tim N. Palmer,et al.  Tropical-Extratropical Interaction Associated with the 30–60 Day Oscillation and Its Impact on Medium and Extended Range Prediction , 1990 .

[39]  K. Mo,et al.  Adaptive Filtering and Prediction of Intraseasonal Oscillations , 2001 .

[40]  K. Lau,et al.  Aspects of the 40 50 Day Oscillation during the Northern Summer as Inferred from Outgoing Longwave Radiation , 1985 .

[41]  Klaus M. Weickmann,et al.  Real-Time Monitoring and Prediction of Modes of Coherent Synoptic to Intraseasonal Tropical Variability , 2001 .

[42]  N. Graham,et al.  Comparison of the Highly Reflective Cloud and Outgoing Longwave Radiation Datasets for Use in Estimating Tropical Deep Convection. , 1993 .

[43]  Duane E. Waliser,et al.  Potential Predictability of the Madden–Julian Oscillation , 2003 .

[44]  N. Graham,et al.  A Statistical Extended-Range Tropical Forecast Model Based on the Slow Evolution of the Madden–Julian Oscillation , 1999 .

[45]  Charles Jones,et al.  Forecast skill of the tropical intraseasonal oscillation in the NCEP GFS dynamical extended range forecasts , 2005 .

[46]  Tetsuzo Yasunari,et al.  Cloudiness Fluctuations Associated with the Northern Hemisphere Summer Monsoon , 1979 .

[47]  Harry H. Hendon,et al.  Medium-Range Forecast Errors Associated with Active Episodes of theMadden–Julian Oscillation , 2000 .

[48]  M. Wheeler,et al.  An All-Season Real-Time Multivariate MJO Index: Development of an Index for Monitoring and Prediction , 2004 .

[49]  Bhupendra Nath Goswami,et al.  Potential predictability and extended range prediction of Indian summer monsoon breaks , 2003 .