The idea is that dust from the impact was lofted into the upper atmosphere all around the globe, where it lingered for at least several months and blocked the sunlight reaching Earth's surface.
(it; lingered; T:for at least several months; L:the globe) (it; blocked; the sunlight reaching Earth's surface) (the sunlight; reaching; Earth's surface) (The idea; is; that dust from the impact was lofted into the upper atmosphere all around the globe) Context(The idea is,List([0, 11))):(dust from the impact; was lofted; into the upper atmosphere; L:all around the globe)
The idea is,List([0, 11))
it it the sunlight The idea dust from the impact
lingered blocked reaching is was lofted
T:for at least several months L:the globe
the sunlight reaching Earth's surface
Earth's surface
that dust from the impact was lofted into the upper atmosphere all around the globe
into the upper atmosphere L:all around the globe