ICU_184

 ICU_184

support material for the ICU 1854 (JFM 2016) teleconference, including preliminary METPI rainfall outlooks

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Nicolas Fauchereau

January 11, 2016
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Transcript

  1. Island Climate Update 184 Forecast period: January – March 2016

    Teleconference Tuesday 12th of January 2016 (12:30 PM NZ Ame) 12/01/16 1
  2. 1) Some words on Rainfall / ConvecAon and SST anomalies

    last month (December 2015) 2) ENSO (Pacific Ocean – Atmosphere system): situaAon and forecast 3) Madden-Julian OscillaAon (MJO) diagnosAcs and forecasts 4) METPI Rainfall Forecast 5) METPI SST Forecast 12/01/16 2 Outline
  3. 1) Recent Rainfall (+Convec<on) and SST in the SW Pacific

    12/01/16 3
  4. Rainfall averages and anomalies (TRMM / GPM) 12/01/16 4

  5. 12/01/16 5 hUp://www.esrl.noaa.gov/psd/map/clim/olr.shtml

  6. 12/01/16 6 •  Well below = < 40 % of

    normal •  Below = between 40 and 80 % •  Normal = between 80 and 120 % •  Above = between 120 and 160 % •  Well above = > 160 % Past 6 months rainfall anomalies for ICU Islands group (TRMM)
  7. SST anomalies November 2015 SST anomalies December 2015 12/01/16 7

  8. 12/01/16 8

  9. 2) ENSO (Pacific Ocean – Atmosphere system) situa<on and forecast

    12/01/16 9
  10. SOI and SST NINO INDICES 12/01/16 Datasource = BoM (hUp://www.bom.gov.au/

    climate/enso/) 10
  11. The ENSO Precipita<on Index (ESPI) for the last 30 days

    (11 Jan.) is +2.32 (El Niño) SOI and ESPI INDICES 12/01/16 hUp://trmm.gsfc.nasa.gov/trmm_rain/ Events/thirty_day.html 11
  12. Surface equatorial SST and Zonal Wind anomalies 12/01/16 12

  13. Ocean sub-surface temp anomalies (TAO) 12/01/16 http://www.pmel.noaa.gov/tao/jsdisplay/ 13 hUp://www.cpc.ncep.noaa.gov/products/intraseasonal/heat_tlon.shtml November

    2015 December 2015 Last 5 days (January 9)
  14. 12/01/16 http://www.pmel.noaa.gov/tao/jsdisplay/ 14 hUp://www.cpc.ncep.noaa.gov/products/intraseasonal/heat_tlon.shtml hUp://www.cpc.ncep.noaa.gov/products/ analysis_monitoring/ocean/weeklyenso_clim_81-10/ wksl_anm.gif Ocean heat content

    anomalies (0 – 300 m) and sea level anomalies
  15. ENSO forecast © NIWA (Na)onal Climate Centre Na)onal Guidance) 12/01/16

    15 CPC/IRI Early-Month Consensus ENSO Forecast ProbabiliAes IRI/CPC Mid-Month Plume-Based ENSO Forecast ProbabiliAes Season La Niña Prob. Neutral Prob. El Niño Prob. JFM 2016 0% 0% 100% AMJ 2016 0% 29% 71% JAS 2016 37% 48% 15%
  16. 12/01/16 16 Recent Pacific Westerly Wind Burst

  17. 12/01/16 17

  18. 3) MJO diagnos<cs and forecasts 12/01/16 18

  19. Madden Julian Oscilla<on Monitoring (BoM) 12/01/16 hUp://www.bom.gov.au/climate/mjo/ or hUp://cawcr.gov.au/staff/mwheeler/maproom/RMM/ 19

  20. Madden Julian Oscilla<on Dynamical Forecast (CPC) 12/01/16 hUp://www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/mjo.shtml#forecast 20

  21. Madden Julian Oscilla<on sta<s<cal Forecast (CPC) 12/01/16 hUp://www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/mjo.shtml#forecast 21

  22. 4) METPI Rainfall forecasts (JFM 2016) 12/01/16 22

  23. 12/01/16 23 TRMM rainfall anomalies for the past 30 days

    Rainfall forecasts for JFM 2016
  24. 12/01/16 24 METPI rainfall results January – March 2016 ICU

    Rainfall Guidance ISLAND PROBABILITY OUTLOOK CONFIDENCE Kiribati (Eastern) 10 30 60 ABOVE High Kiribati (Western) 10 30 60 ABOVE Moderate-High Tuvalu 20 30 50 ABOVE Moderate-High Tokelau 20 35 45 ABOVE High Cook Islands (Northern) 25 35 40 AVG - ABOVE High Marquesas 25 35 40 AVG - ABOVE Moderate-High Tuamotu Islands 25 35 40 AVG - ABOVE Moderate-High Austral Islands 30 40 30 NEAR NORMAL Moderate-High Pitcairn Island 30 40 30 NEAR NORMAL High Papua New Guinea 35 35 30 CLIMATOLOGY Moderate-High Solomon Islands 35 35 30 CLIMATOLOGY Moderate-High Society Islands 35 40 25 AVG - BELOW Moderate-High New Caledonia 45 35 20 BELOW High Cook Islands (Southern) 50 30 20 BELOW Moderate Fiji 50 30 20 BELOW High Samoa 50 30 20 BELOW Moderate-High Vanuatu (South) 50 30 20 BELOW Moderate-High Wallis & Futuna 50 30 20 BELOW Moderate-High Niue 55 30 15 BELOW Moderate-High Tonga 55 30 15 BELOW Moderate-High Vanuatu (North) 60 30 10 BELOW High FSM 60 30 10 BELOW High Rainfall outcomes estimated from an average of dynamical and statistical models for the Pacific Ocean region. The first three columns indicate the probability for rainfall occurring in one of three terciles (lower-L, middle-M, upper-U). The fourth column is
  25. 12/01/16 25 METPI rainfall results

  26. 6) METPI SST forecasts (JFM 2015/16) 12/01/16 26

  27. 12/01/16 27 SST anomalies For December 2015 SST forecasts for

    JFM 2016