Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 28, Issue 1, Pages 147-150Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2000GL011374
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The 1997-98 El Nino was one of the strongest El Nino Southern Oscillation (ENSO) events of this century. The major impact of the sea surface temperature (SST) change during this El Nino event was the shift in convection activity from the western to the central acid eastern Pacific ocean affecting the response of rain-producing cumulonimbus. As a result, convective rainfalls were suppressed near the Western Pacific regions and the Maritime Continent including Indonesia. On the other hand, the lightning activity during the El Nino period increased in contrast (on the average by 57%), As observed by the Tropical Rainfall Measuring Mission (TRMM) Lightning Imaging Sensor and Precipitation Radar, the convective storms during the El Nino were more intense. This was supported by the evidence that the El Nino storms had greater vertical developments and thicker zones containing ice phase precipitation.
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