Volkan patlamaları iklimi soğutuyor
Bu haberde göreceğiniz üzer bilim adamları volkan faaliyetleri sonucu atmosfere salınan sülfürdioksit gezegenin soğumasına neden olacak diyorlar. Kryon bu bilgiyi burada paylaşmıştı
Volcanic eruptions in the early part of the 21st century have cooled the planet, according to a study led by Lawrence Livermore National Laboratory.
Despite continuing increases in atmospheric levels of greenhouse gases, global-mean temperatures at the surface of the planet and in the troposphere have shown relatively little warming since 1998.
This so-called 'slow-down' or 'hiatus' has received considerable scientific, political and popular attention.
Volcanic eruptions inject sulfur dioxide gas into the atmosphere. If the eruptions are large enough to add sulfur dioxide to the, the gas forms tiny droplets of sulfuric acid, also known as "volcanic aerosols."
These droplets reflect some portion of the incoming sunlight back into space, cooling Earth's surface and the lower atmosphere.
"In the last decade, the amount of volcanic aerosol in the stratosphere has increased, so more sunlight is being reflected back into space," said Lawrence Livermore climate scientist Benjamin Santer, who serves as lead author of the study.
"This has created a natural cooling of the planet and has partly offset the increase in surface and atmospheric temperatures due to human influence."
"The recent slow-down in observed surface and tropospheric warming is a fascinating detective story," Santer said.
"The real scientific challenge is to obtain hard quantitative estimates of the contributions of each of these factors to the slow-down.""There is not a single culprit, as some scientists have claimed. Multiple factors are implicated. One is the temporary cooling effect of internal climate noise. Other factors are the external cooling influences of 21st century volcanic activity, an unusually low and long minimum in the last solar cycle, and an uptick in Chinese emissions of sulfur dioxide.