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The Asian-Australian Monsoon System: Recent Evolution, Current Status and Prediction

This report by the Climate Prediction Center provides an update on the recent evolution, current status, and prediction of the Asian-Australian monsoon system. It includes information on rainfall patterns, monsoon prediction, and climatology.

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The Asian-Australian Monsoon System: Recent Evolution, Current Status and Prediction

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  1. The Asian-Australian Monsoon System: Recent Evolution, Current Status and Prediction Update prepared by Climate Prediction Center / NCEP May 15, 2017 For more information, visit:http://www.cpc.ncep.noaa.gov/products/Global_Monsoons/Asian_Monsoons/Asian_Monsoons.shtml

  2. Outline • Recent Rainfall and Current Conditions • Monsoon Prediction • Summary • Climatology

  3. Precip Patterns: Last 90 Days For the past 90 days, normal to slightly below normal rainfall deficits remain in general over most parts of India, except over northeastern India and Bangladesh where the rainfall was excess. Large rainfall deficits are noted over large parts of Australia, except along its east coast. Elsewhere , the rainfall was generally near to above normal, except over Papa New Guinea where it was below.

  4. Precip Patterns: Last 30 Days For the past 30 days rainfall deficits are found over Papa New Guinea and along the east coast of Australia. Small deficits are also noted along coastal southern India, South Korea and some parts of Japan. Large excess precipitation is noted over northeastern India. Elsewhere, the rainfall is generally above to near normal.

  5. Precip Patterns: Last 7 Days In this past week, the observed rainfall amounts have generally been sporadic, and are slightly above normal in some places.

  6. Atmospheric Circulation Generally these CDAS maps are two days behind. But sometimes, as it is today, due to technical issues, these maps are further behind.

  7. Rainfall Time Seriesover 5x5 lat-lon boxes 180 days deficit… Severe drought The time series of precipitation over the various regions is pretty much consistent with the spatial maps shown earlier.

  8. NCEP/GFS Model Forecasts Accumulated Precip. for Week 1 & Week 2 Week-1 Week-2

  9. NCEP/GFS Model Forecasts Bias-Corrected Precip. Anom. for Week 1 & Week 2 Week-1 Week-2

  10. Summary For the past 90 days, normal to slightly below normal rainfall deficits remain in general over most parts of India, except over northeastern India and Bangladesh where the rainfall was excess. Large rainfall deficits are noted over large parts of Australia, except along its east coast. Elsewhere , the rainfall was generally near to above normal, except over Papa New Guinea where it was below. For the past 30 days rainfall deficits are found over Papa New Guinea and along the east coast of Australia. Small deficits are also noted along coastal southern India, South Korea and some parts of Japan. Large excess precipitation is noted over northeastern India. Elsewhere, the rainfall is generally above to near normal. In this past week, the observed rainfall amounts have generally been sporadic, and are slightly above normal in some places. In the next couple of weeks the NCEP GFS model is predicting above normal rainfall over northeastern India in the first week, and below normal rainfall over southeastern China in the second week.

  11. Demise of the Asian Monsoon

  12. Onset of the Australian Monsoon

  13. Climatology

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