BMKG: 2020 dry season is shorter in West Sumatra

30 Juli 2020 | 21.17 WIB Last Updated 2020-07-30T14:17:22Z
Doc. Media Indonesia

Padang -- Badan Metrologi Klimatologi dan Geofisika noted that the dry season in 2020 is shorter in West Sumatra (West Sumatra) because since July it has begun to enter the rainy season. 

 "In July 2020 it is no longer normal, an anomaly occurs, usually during June and July rainfall is still minimal and the dry season usually occurs in the rain shadow area," said Meteorology and Geophysics Observers BMKG Sicincin Climate Station, Rizky Armei Saputra in Padang, Thursday (30/7). 

 According to him, in 2020 it became one of the wet years recorded by the Padang Pariaman Climatology Station in the last 10 years because almost all regions experienced a short dry season averaging one month on average. 

 The regions that experienced a long dry season for more than two months in May and June were only North Pasaman, Rao District, North Rao, Panti and Mapat Tunggul. While the Dareh River area, Dharmasraya Regency does not experience a dry season at all this year, he said. 

However, this condition makes rainfall evenly distributed until the middle of the year can meet the irrigation of rainfed lowland agriculture that supports the acceleration of the planting area program.  

"Moreover, the agricultural sector is a mainstay sector that is slightly affected by COVID-19," he said. 

Then rain-fed rice fields in Pasaman, Limapuluh Kota, Tanah Datar, Agam, Solok, Solok City, Sijunjung, Dharmasraya which are usually watery can now adjust crop commodities because the dry season still has the potential to be able to plant rice until the end of the year.  

"However, it is necessary to anticipate pests and diseases that will increase if the rain continues," he said.  

He analyzed the short dry season in West Sumatra this year due to atmospheric dynamics such as the retention of active eastern winds around the equator and the weakening of the west monsoon / Asian monsoon winds resulting in the accumulation of clouds around the equator causing a lot of rain.  

The Indian Ocean Index (IOD) which was positive (0.5) in June is now heading neutral, he said. Warm sea surface temperatures also support the formation of rain clouds. The existence of international weekly weather disturbances is enough to affect rain in West Sumatra. Enough wind gatherings in July in the western waters of Sumatra also increase rainfall.  

BMKG predicts that rainfall until the beginning of August has the potential of the medium to high category which continues to be watched and anticipated for potential hydrometeorological disasters. (Antara)
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