2011: More droughts and floods

According to the experts of meteorology and hydrology, the year 2011 will continue to be a year of extreme weather with fluctuations in temperature, irregular rain, storms due to the effects of climate change.

The year 2011 is the year of La - Nina (La Nina is the opposite of the El Nino phenomenon. It usually begins to form from March to June every year, and has the strongest influence at the end of the year for until February next year The La Nina phenomenon of cold sea currents cools the temperature of the regions it passes through - according to Wikipedia.

Vietnam is one of the countries rated by the world as the most affected by climate change so hydrometeorists cannot underestimate the 2011 weather.

La-Nina, the main culprit causing climate disturbance

According to the Central Hydrometeorological Center, the whole of January, the North and Central Vietnam do not have any day when the temperature is over 20 degrees Celsius. For more than a month continuously, the two regions are submerged in cold and cold air. . This is a prolonged cold spell rarely seen in recent years.

Weather forecast at the Central Hydrometeorological Center.
(Photo: Nhu Y)

It is considered by experts as a 38-day historical cold. Although the cold last January lasted less than a few days but the temperature of cold weather this year is much lower and more extreme.

Dr. Bui Minh Tang, Director of the Central Hydrometeorological Center, said that this extreme weather pattern has been judged and judged by experts since early 2011 was La - Nina period. Strongest movement in the cycle.

Stress drought and flood

In addition to the cold, damaging cold, strong winds on the sea and the regions of the North and Central Highlands, the drought phenomenon is also very stressful, the amount of water in reservoirs and rivers is very depleted. Right from the early days of the year, on the weather forecast news, it is constantly mentioning to raise the sense of saving and prepare to fight against drought in the winter-spring crop of 2011.

According to the prediction of the Central Hydrometeorological Center , in this year (2011), unseasonal rainfall in the South will be more in the dry season. Specifically, the South will have a higher level of precipitation than the average for many years, particularly in the Central Highlands region, which is slightly higher than the average of many years of the same period. During the dry season, there is more chance of unseasonal rains than in the dry season of 2009-2010.

However, Prof. Dr. Nguyen Dinh Quang, Deputy Director of Science and Technology Center for Hydrometeorology and Environment, said that because of La - Nina phenomenon, the Northern Region will have many small rainy days and drizzle more than average. often. Although this rainfall is insignificant, it also slightly reduces the irrigation and drainage work when it is in the winter-spring crop.

It is noteworthy that because of La - Nina, Vietnam will appear a humid air mass, followed by floods, especially in the central and southern central provinces. Regarding storms and storms, according to meteorological and hydrological experts, the number of rain and storms is also likely to increase higher than the average of many years.