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BCC:Weak El Niño event appear formally

12-05-2020Source:China Meteorological News Press

The monitoring data from the Beijing Climate Center shows that since November 2019, the Equatorial Middle East Pacific has maintained El Niño conditions. The average of the Nino 3.4 index for five consecutive months respectively was 0.6°C, 0.5°C, 0.5°C, 0.5°C, and 0.5°C. According to the China’s identification standard for the El Niño/La Niña event, an El Niño event (with a weak intensity) has been formed officially.

In this El Niño event, the response of the tropical atmospheric circulation to the sea temperature is mainly reflected the characteristics of Central Pacific type (CP) El Niño influences, which means that the atmosphericabnormalascending motion is mainly in the central and western Pacific,,and the intensity of the western Pacific subtropical high is strongerwith westward locationsince the spring. Southwestern South of the Yangtze River to western South China, and most parts of Qinghai-Tibet Plateau haveseen more precipitation.

Affected by the El Niño event, it is expected that in the summer of 2020, the intensity of the western Pacific subtropical high will be relatively stronger, and the overall precipitation will be more in southern and northern China and less in middle parts.

According to the comprehensive prediction results, the sea temperature of equatorial Middle East Pacific will return to a neutral state after spring. In the future, it is necessary to closely monitor the sea temperature conditions, and pay attention to the possible impact on the weather and climate during flood season. (May 12)

Reporter Cui Guohui

Editor Hao Jing