Allergy seasons are likely to become longer and grow more intense as a result of increasing temperatures caused by manmade climate change, according to new research from the University of Michigan.

By the end of this century, pollen emissions could begin 40 days earlier in the spring than we saw between 1995 and 2014. Allergy sufferers could see that season last an additional 19 days before high pollen counts may subside.

In addition, thanks to rising temperatures and increasing CO2 levels, the annual amount of pollen emitted each year could increase up to 200%.

“Pollen-induced respiratory allergies are getting worse with climate change,” said Yingxiao Zhang, a U-M graduate student research assistant in climate and space sciences and engineering and first author of the paper in Nature Communications. “Our findings can be a starting point for further investigations into the consequence of climate change on pollen and corresponding health effects.”

Read more at: University of Michigan

Climate and Space Sciences and Engineering Professor Allison Steiner and graduate student research assistant Yingxiao Zhang discuss their work. (Photo credit: Marcin Szczepanski)