“This is clearly warming temperatures and more carbon dioxide putting more pollen in the air,” Anderegg said. Trees are spewing the allergy-causing particles earlier than grasses, he said, but scientists aren’t sure why that’s the case. Just look at cherry blossoms opening several days earlier in Japan andTexas is where some of the biggest changes are happening, Anderegg said. The South and southern Midwest are getting pollen season about 1.3 days earlier each year, while it’s coming about 1.
Anderegg said his team factored that in that parks and plants in cities were getting greener. They did standard detailed calculations that scientists have developed to see if changes in nature can be attributed to the increase of heat-trapping gases from the burning of coal, oil and natural gas. They compared what’s happening now to computer simulations of an Earth without human-caused warming and rising carbon dioxide in the air.
Since 1990, about half of the earlier pollen season can be attributed to climate change — mostly from the warmer temperatures — but also from the plant-feeding carbon dioxide, Anderegg said. But since the 2000s, about 65 percent of earlier pollen seasons can be blamed on warming, he said. About 8 percent of the increased pollen load can be attributed to climate change, he said.
While doctors and scientists knew earlier allergy season was happening, until now no one had done formal climate attribution studies to help understand why, said University of Washington environmental health professor Kristie Ebi, who wasn’t part of the study. This can help scientists estimate how many allergies and asthma cases “could be due to climate change,” she said.
Can't sneeze if you're dead.
Yes I know my nose has been running for a week now my eyes puffy but I'm not going to the hospital or in public until I get a vaccine
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No match for Fauci's dual weld mask set up.