ICU_179

Island Climate Update issue 179 (August - October 2015) support material. The METPI rainfall results are preliminary and will be finalised after the teleconference

Transcript

1. Island  Climate  Update  179   Forecast  period:   August  –  October  2015   Teleconference  Tuesday  4th  of  August  2015   (11:30  AM  NZ  Dme)   4/08/15   1  
2. 1)  Some  words  on  Rainfall  /  ConvecDon  and  SST  anomalies  last  month   (July  2015)   2)  ENSO  (Pacific  Ocean  –  Atmosphere  system):  situaDon  and  forecast     3)  Madden-­‐Julian  OscillaDon  (MJO)  diagnosDcs  and  forecasts     4)  METPI  Rainfall  Forecast     5)  METPI  SST  Forecast     4/08/15   2   Outline    
3. 1)  Recent  Rainfall  (+Convec<on)  and  SST  in  the  SW  Pacific   4/08/15   3  
4. Rainfall  averages  and  anomalies  (TRMM  /  GPM)     4/08/15   4  
5. 4/08/15   5   hTp://www.esrl.noaa.gov/psd/map/clim/olr.shtml  
6. 4/08/15   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  June  2015   SST  anomalies  July  2015   4/08/15   7  
8. 4/08/15   8  
9. 2)  ENSO  (Pacific  Ocean  –  Atmosphere  system)  situa<on  and  forecast     4/08/15   9  
10. SOI  and  SST  NINO  INDICES   4/08/15   Datasource  =  BoM  (hTp://www.bom.gov.au/ climate/enso/)   10  
11. The  ENSO  Precipita<on  Index  (ESPI)  for  the  last  30  days  (30  June)  is  +2.78   (El  Niño)   SOI  and  ESPI  INDICES   4/08/15   hTp://trmm.gsfc.nasa.gov/trmm_rain/ Events/thirty_day.html   11  
12. Surface  equatorial  SST  and  Zonal  Wind  anomalies   4/08/15   12   hTp://www.pmel.noaa.gov/tao/jsdisplay/  
13. Ocean  sub-­‐surface  temp  anomalies  (TAO)   4/08/15   http://www.pmel.noaa.gov/tao/jsdisplay/ 13   hTp://www.cpc.ncep.noaa.gov/products/intraseasonal/heat_tlon.shtml   June  2015     July  2015     Last  5  days  (2nd  August)  
14. 4/08/15   http://www.pmel.noaa.gov/tao/jsdisplay/ 14   hTp://www.cpc.ncep.noaa.gov/products/intraseasonal/heat_tlon.shtml   hTp://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)       4/08/15   15   CPC/IRI  Early-­‐Month  Consensus  ENSO  Forecast  ProbabiliDes   Season   La  Niña   Prob.   Neutral   Prob.   El  Niño   Prob.   ASO  2015   0%   3%   97%   NDJ  2015/16   1%   5%   94%   FMA  2016   2%   17%   81%   CPC/IRI  Early-­‐Month  Consensus  ENSO  Forecast   ProbabiliDes  (from  hTp://iri.columbia.edu/our-­‐experDse/ climate/forecasts/enso/current/?enso_tab=enso-­‐cpc_plume)  
16. 3)  MJO  diagnos<cs  and  forecasts     4/08/15   16  
17. Madden  Julian  Oscilla<on  Monitoring  (BoM)   4/08/15   hTp://www.bom.gov.au/climate/mjo/  or  hTp://cawcr.gov.au/staff/mwheeler/maproom/RMM/     17  
18. Madden  Julian  Oscilla<on  Dynamical  Forecast  (CPC)   4/08/15   hTp://www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/mjo.shtml#forecast     18  
19. Madden  Julian  Oscilla<on  sta<s<cal  Forecast  (CPC)   4/08/15   hTp://www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/mjo.shtml#forecast     19  
20. 4)  METPI  Rainfall  forecasts  (ASO  2015)   4/08/15   20  
21. 4/08/15   21  
22. 4/08/15   22   METPI  rainfall  results   August – October 2015 ICU Rainfall Guidance ISLAND PROBABILITY OUTLOOK CONFIDENCE Kiribati (Eastern) 20 30 50 ABOVE High Kiribati (Western) 20 30 50 ABOVE High Tuvalu 20 35 45 ABOVE High Pitcairn Island 25 35 40 AVG - ABOVE Moderate-High Tokelau 25 40 35 AVG - ABOVE Moderate-High Austral Islands 30 40 30 NEAR NORMAL Moderate-High FSM 35 35 30 CLIMATOLOGY Moderate-High Marquesas 35 40 25 AVG - BELOW Moderate-High Cook Islands (Northern) 40 35 25 AVG - BELOW Moderate-High Samoa 40 35 25 AVG - BELOW High Society Islands 40 35 25 AVG - BELOW High Solomon Islands 40 35 25 AVG - BELOW Moderate-High Tuamotu Islands 40 35 25 AVG - BELOW High Wallis & Futuna 40 35 25 AVG - BELOW Moderate-High Cook Islands (Southern) 40 40 20 AVG - BELOW High Vanuatu 50 35 20 BELOW High Fiji 45 35 20 BELOW Moderate-High New Caledonia 45 35 20 BELOW High Niue 45 35 20 BELOW High Tonga 45 35 20 BELOW High Papua New Guinea 50 30 20 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 an overall assessment of the expected rainfall relative to normal for the time of year.
23. 4/08/15   23   METPI  rainfall  results  
24. 6)  METPI  SST  forecasts  (ASO  2015)   4/08/15   24  
25. 4/08/15   25