The most severe cold waves are coming in the last 12 years

On January 23, Dr. Nguyen Van Thang - Director of the Center for Meteorological and Climate Research (Institute of Meteorology, Hydrology and Environment) said that this cold spell is not the deepest cold spell of the North in 12 years. last year.

After this cold spell, there are many other cold spells

Over the past few days, a number of newspapers and mass media have reported that this cold spell is the most cold spell of the North in 12 years since the Binh Ty Lunar New Year in 1996.

The North has been strong in the past few days.Photos taken January 24.(Photo: Ng. Huyen)

Talking to reporters VietNamNet, TS. Nguyen Van Thang - Director of the Center for Meteorological and Climate Research (Institute of Meteorology, Hydrology and Environment said: "We have not seen any information of the network of meteorological and hydrological stations determined. This cold spell is the worst cold spell in 12 years. "

After hearing this information, the Center for Meteorological and Climate Research collected and analyzed the data of all hydrological stations of the northern region. By this time the lowest temperature recorded by the Center during the last cold was 0.9 degrees Celsius in the northern area on January 4 in Bac Ha (Lao Cai province).

Compared to the data in recent years since 1999, the lowest temperature in Sin Ho in Lai Chau province on December 25 is - 3.2 degrees C and a series of data collected in 1999 is - 2.2 degrees C on December 23 in Sa Pa, Lao Cai province, -1.5 degrees C on December 24 in Bac Ha (Lao Cai), 0 degrees C on January 8, 1999 at Son Dong (Bac Giang) . In 2000, the lowest temperature was - 0.2 degrees Celsius on January 31 in Sa Pa (Lao Cai) ".

According to the National Center for Hydrometeorology, this cold spell can last 2-3 days. The cause of this cold spell is because January is the main winter month with many cold spells coming, after this cold spell there are many other cold spells. Each year on average there are about 30 waves of cold air.

La Nina phenomenon appears to make winter temperature low

The forecast of some hydro-meteorological centers in the world also said that La Nina phenomenon is being maintained and the possibility of this is La Nina's century. The phenomenon of La Nina appears will make the temperature of winter temperature lower and the number of cold days lasts longer. Through the analysis of the number of cold days in winter in Hanoi, the years with La Nina phenomenon have more cold days than the average of about 8 days.

According to Dr. The rule of storm and climate is changing. Specifically, the annual storm season usually begins from May 15 to November 15 and almost ends in November, but in December 2007 there are still storms and in early January there were two low-pressure zone. This makes meteorologists more difficult to forecast and must adjust the forecast time.

Is there a sign of a change in this rule related to climate change? (!) Meteorologists are discussing this issue, however, there is no adequate research to confirm. determined.

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