Summer in the middle of winter

Unsurprisingly, the experts forecast hydrometeorology confirms the phenomenon of hot weather such as summer lasting continuously from the beginning of February until now, especially during the past Lunar New Year days, is a phenomenon of time. Special and unusual periods compared to every year.

Mr. Nguyen Huu Hai, head of the long-term forecast department, Central Hydrometeorology Center (NCHMF), said the average temperature in the Northern provinces from 6-2 up to now is always higher than 20oC and rare. every year the temperature in winter is so high.

Meanwhile, Vu Anh Tuan, head of the short-term forecast department, NCHMF, said: 'For the North, it can be called summer in winter because the temperature is up to 29-30 ^o C in many places. strange phenomenon'.

Experts said that normally in February there will be about 3-4 cold spells with small rain and drizzle. At the time of Lunar New Year, the weather is usually hot before Tet and then shift to cold, it is dim, there is little rain and drizzle. However, according to NCHMF's forecast, in February this year, the temperature of the Northern, Central Highlands and Southern regions is higher than the average for many years.

In fact, from the beginning of February until now, the northern region has not been affected by any cold spell but always appears prolonged sunshine. Mr. Tuan explained: 'It is expected that this time the cold air will affect Vietnam to make the weather colder with small rain and drizzle. However, the past cold waves are very weak, only cold in southern China, not strong enough to cause cold to the northern provinces of Vietnam.

These cold waves have not impacted Vietnam, which has gone to the east to the Taiwan area, the Japanese sea makes the weather in North Vietnam not cold. ' The most obvious manifestation of this phenomenon is the third day of the Tet (19-2) when it is cloudy in the northern provinces, no longer sunny due to the influence of weak cold air. On the morning of February 20, the cold air in southern China turned to the east, so the weather in the northern provinces of Vietnam was hot again.

In Hanoi, Lunar New Year usually wears a warm coat and a wool hat.
And this year, visitors go to the street to wear cool . (Photo: Viet Dung)

According to Mr. Nguyen Huu Hai, the hot weather phenomenon will continue for about 5-6 days because there are no signs of cold air strong enough to affect Vietnam. Mr. Hai said that the hot weather phenomenon in the past may be due to the impact of the El Nino phenomenon in operation. Accordingly, when El Nino appears, the winter in Vietnam is often warmer.

K.HUNG

Hot weather due to El Nino?

The announcement of the World Meteorological Organization (WMO) on the global climate situation shows that the average El Nino phenomenon is being formed in the Pacific tropical region and has affected the evolution of global climate. demand in general, Vietnam in particular.

Summary of forecasts of Enso's evolution (temperature fluctuations of Pacific equatorial seawater), climate developments of major forecasting centers around the world and analysis of forecast products climate of the Center for Meteorological and Climate Research, Institute of Meteorology and Hydrology and Environment, can make a forecast for February, March and April 2007 in Vietnam as a possible temperature. exceed the standard on most parts of our country with a very high probability, from 66 to 77%.

The difference in temperature compared to the average fluctuates mainly in the range of 0-1,5 ⁰ C on most territory areas.Rainfall in the whole territory of our country is likely to be below to approximate the standard period average 1971-2000.

Because El Nino phenomenon may continue to prolong, the impact of El Nino on the operation of the monsoon is very large.The possibility of summer monsoon in 2007 will be very late, resulting in a large shortage of rainfall at the end of the dry season and early rainy season in 2007 throughout the country, especially in the South Central and Central Highlands. and South Vietnam.

If the water shortage is prolonged due to the late rainy season of 2007, it will seriously affect daily life, especially in the production areas, especially for agricultural production.

DAO THI THUY (Center for Meteorological and Climate Forecast, Institute of Meteorology and Hydrology)