U.S. CLIVAR

Terms of Reference

• Develop a set of diagnostics to be used for assessing MJO simulation fidelity and forecast skill. 

• Develop and coordinate model simulation and prediction experiments, in conjunction with model-data comparisons, which are designed to better understand the MJO and improve our model representations and forecasts of the MJO.

• Raise awareness of the potential utility of subseasonal and MJO forecasts in the context of the seamless suite of predictions.

• Help to coordinate MJO-related activities between national and international agencies and associated programmatic activities.

• Provide guidance to US CLIVAR and Interagency Group (IAG) on where additional modeling, analysis or observational resources are needed. 

MJO & Weather-Climate Interactions

MJO Overview (coming soon for now see links)

MJO Weather Climate Interactions

• ENSO
• Hurricanes
• Australian Monsoon
• Asian Monsoon
• High Latitude Weather
• Ocean Chlorophyll
• Global Benefits and Hazards
• African Rainfall
• MJO and Atmospheric Composition: Total Column Ozone
• Atmospheric Angular Momentum and Length of Da

MEETINGS

Relevant Science Meetings and Workshops

• Workshop on the Organization and Maintenance of Tropical Convection and the Madden Julian Oscillation 13-17 March 2006 (Trieste, Italy)
• Diagnosing, Modeling and Forecasting Subseasonal Atmospheric Variability, AGU, 23-25 May 2006(Balitmore, MD)
• Tropical Convection and The Weather Climate Interface 10-14 July 2006 (NCAR - Boulder, CO)
• MJO WG meeting 24-25 July 2006 (Breckenridge, CO - prior to the U.S. CLIVAR Summit)
• Posting of initial version of MJO simulation metrics 7 February 2007
• 3rd WGNE Workshop on Systematic Errors in Climate and NWP Models 12-16 Feb 2007 (San Francisco, CA)
  • Presentation from the workshop (pdf)
• CLIVAR Asian-Australian Monsoon Panel (AAMP) Meeting 19-21 February 2007 (Honolulu, HI)
  • MJO Metrics presented and Collaborations with MJOWG discussed
• NSF STC CMMAP Meeting (Kauai, Hawaii)
  • Metrics presented and Collaborations with MJOWG discussed (pdf)
• Celebrating the Monsoon 24-28 July 2007 (Centre for Atmospheric & Oceanic Sciences Indian Institute of Science - Bangalore)
• MJO Workshop 5-7 November 2007 (Beckman Center Irvine, CA)
• Year of Tropical Convection Planning Meeting 13-14 November 2007 (Arlington, VA)
• MJO Presentations at the Annual AGU Meeting (San Francisco, CA)
  • Working Group presentation on improving subseasonal predictions (pdf)
  • AGU Press Briefing (pdf)

 

Photo from the MJO Workshop November 2007

Working Group Meetings/Teleconferences

• Teleconference Agenda (pdf) and Minutes (pdf) from 3 May 2006
• Teleconference Agenda (pdf), Minutes (pdf) and Attachment 1 (pdf) from 31 May 2006
• Teleconferece Minutes (pdf) and Attachment (pdf) from 27 June 2006
• Teleconference Minutes (pdf) from 18 July 2006
• MJO Metrics (26 July 2006) (pdf)
• 1st MJO WG Meeting (July 2006) at the U.S. CLIVAR Summit
  • Climate Weather Interface presentation by A. Ray(pdf)
  • Experimental Global Tropics Benefits/Hazards Assessment presentation by W. Higgins(pdf)
  • MJO Simulation Metrics - Summary to Date (pdf)
  • Summary presentation of WG Activities at US CLIVAR Summit (pdf)
• Teleconference Agenda (pdf), MInutes (pdf) and Draft Metric Calculations (pdf) from 16 October 2006
• Teleconference Minutes (pdf), Attachment (ppt) and Draft Metric Website from 29 November 2006
• Teleconference Minutes (pdf) from 19 March 2007
• Teleconference Minutes (none available) from 31 May 2007
• US CLIVAR 2007 Summit presentation 23 July (pdf)
• Teleconference Minutes (pdf) from 9 August 2007
• MJO Workshop - posters and presentations
• MJO Workshop report (doc)
• Teleconference Minutes (pdf) and attachements from 14 April 2008
  • rmm composite
  • tropical correlation
  • Gottschalck presentation

DOCUMENTS

• MJO Working Group Proposal (pdf)
• MJO Working Group Prospectus revised Spring 2006 (pdf)
• BAMS report from ENSO-MJO workshop (pdf)
• Report from NASA subseasonal workshop (pdf)
• Report from NASA/USCLIVAR MJO workshop (pdf)
• Report from ECMWF-MJO workshop
• The Experimental MJO Prediction Project (pdf)
• Report from the Trieste Organized Convection/MJO Workshop (pdf)
• MJOWG presentation at the WGNE Systematic Errors Workshop - February 2007 (pdf)
  

REFERENCES

• Madden, R. A., and P. R. Julian (1971), Detection of a 40-50 day oscillation in the zonal wind in the tropical Pacific, J. Atmos. Sci., 28, 702-708.

Working Group Publications

• Waliser, D E and K R Sperber, 2006: U.S. CLIVAR Madden-Julian Oscillation Working Group (MJOWG). CLIVAR Exchanges No 38, page 7. (Unpublished manuscript).
• Waliser, D E and K R Sperber, 2006: U.S. CLIVAR Madden-Julian Oscillation Working Group (MJOWG) Meeting Report. U.S. CLIVAR Variations, Vol. 4, No. 3, page 6-7. (unpublished manuscript)

Reviews

• Madden, R. A., and P. R. Julian (1994), Observations of the 40-50-Day Tropical Oscillation - a Review, Monthly Weather Review, 122, 814-837.
• Lau, W. K. M., and D. E. Waliser (Eds.) (2005), Intraseasonal Variability of the Atmosphere-Ocean Climate System, 474 pp., Springer, Heidelberg, Germany.
• Zhang, C. (2005), The Madden Julian Oscillation, Reviews of Geophysics, 43, RG2003, doi:10.1029/2004RG000158.
• Waliser, D. E. (2006), Intraseasonal Variability, in The Asian Monsoon, edited by B. Wang, p. 844 Springer, Heidelberg, Germany.

Multi-Model Analyses

• Slingo, J. M., et al. (1996), Intraseasonal oscillations in 15 atmospheric general circulation models: Results from an AMIP diagnostic subproject, Clim. Dyn., 12, 325-357.
• Sperber, K. R., et al. (2000), Predictability and the relationship between subseasonal and interannual variability during the Asian summer monsoon, Quarterly Journal of the Royal Meteorological Society, 126, 2545-2574.
• Waliser, D. E., et al. (2003), AGCM simulations of intraseasonal variability associated with the Asian summer monsoon, Clim. Dyn., 21, 423-446.
• Lin, J. L., et al. (2006), Tropical intraseasonal variability in 14 IPCC AR4 climate models. Part I: Convective signals., J. Climate, In Press.
• Zhang, C, M. Dong, H. H. Hendon, E. D. Maloney, A. Marshall, K. R. Sperber, and W. Wang, 2005: Simulations of the Madden-Julian Oscillation in Four Pairs of Coupled and Uncoupled Global Models. Climate Dynamics, DOI: 10.1007/s00382-006-0148-2.

LINKS

• MJO Simulation Metrics
• CPC Intraseasonal Monitoring, Outlooks, Links to Weather and Educational Material
• CPC hazards assessment
• CPC MJO Weekly Update
• CDC MJO experimental prediction website
• CDC MJO monitoring page
• Australian Bureau of Meteorology MJO monitoring and prediction web site