Warmer and Wetter Winters in Europe and Western North America Linked to Increasing Greenhouse Gases
http://www.giss.nasa.gov/research/news/19990602/
lupaukset tulossa lunastusvaiheeseen
http://www.giss.nasa.gov/research/news/19990602/
lupaukset tulossa lunastusvaiheeseen
Vastaukset 1
Vanhimmat
"If we include the stratosphere in the climate model, we're finding that the increasing greenhouse gases lead to an enhanced polar vortex," said Shindell. It is the strengthened polar vortex that drives winds all the way from the stratosphere to the lower atmosphere, creating stronger westerlies and increasing the warm periods of the Arctic Oscillation, said Shindell. A realistic representation of the stratosphere, including the polar vortex, is typically not included in climate models. These results suggest that the impact of global warming may therefore be incompletely represented by most current models, with this altered circulation effect making for greater regional warming during wintertime.
Ja nyt on polar vortex taas aivan mäsänä, kun arktinen lämpeneminen nostaa ilmanpainetta napa-alueella ja ravistelee sen tuulijärjestelmää. Kylmä ilma pääsee nyt helposti alemmille leveysasteille, joten Suomessa on oltava valmiina useisiin hyvin kylmiin talviin.