Volcanic Eruption Increase the Rain in Southeast Asia

Numerous studies in the past have shown that experienced by the massive eruption of Mount Tambora in 1815 and Krakatoa in 1883, both of which are in Indonesia, lower air temperature of the world and eliminate trees.

Researchers at the Center for Lamont-Doherty Earth Observation of Columbia University in the United States wants to examine some of the impact on Asia because of the rainy season is important for plants and billions of human lives.

Single effort to find out is by tracing into the past. They studied the growth cycle of the old trees have been several centuries from around 300 areas throughout Asia, according to a study released by the issue of the journal Geophysical Research Letters on the network.

They examine a number of impacts on rainfall than most 54 eruption in 800 years ago by measuring the influence of the growth of trees. The growth of small and thin circle shows little rainfall and if it was vice versa then it indicates a large rainfall.

Tree-ring show in a large area of southern China, Mongolia, and the surrounding area are still dry in one or two years after the eruption of the volcano, while the mainland of Southeast Asia get more rainfall.

Volcanic eruptions spread sulfur content that turns into a microscopic sulfate particles in the atmosphere are high that refract sunlight affect the cooling air temperature at the earth can survive for months or even years.

The present study broadcasting at the time series of the eruption of Mount Merapi on Java Island, Indonesia, erupted again on Friday with the death toll close to 100 people.

The eruption, although large, can not affect the temperature of the world, said a media statement the study.

Relation to El Nino

The researchers, led by Kevin Anchukaitis of observations agency, said their research did not assess the close links between the atmosphere and oceans and also challenge the existing climate models.

“Most of the existing climate models incorporate known natural phenomena, such as changes in the sun and atmosphere, has estimated that volcanic eruptions can disrupt the season by reducing the amount of rainfall to the Southeast Asia,” he said.

A number of findings, the researchers said, could help improve the next few visual aids are used by scientists trying to understand some of the global impact of climate change and other major influences.

For example, they explain that there may be close links between the impact of the eruption and the weather phenomenon El Nino and La Nina that triggers droughts or floods in some parts of Asia and Australia.

El Nino weather event or strong La Nina can counteract the effects of the eruption, reducing the drying and provides a moisturizing effect, or vice versa, which under certain conditions, it can exacerbate the impacts, catastrophic floods or severe drought.

The scientists also say that their study is useful as a warning of possible unintended effects of the big plan “repair the earth” to reduce climate change, by building an artificial volcano in order to cool the temperature by pumping the sulfate particles into the atmosphere the highest.