Allergy season lasts longer

Climate change is a problem for many reasons, and we may need to add one to the one we already know. A new scientific study says that due to global warming, plants are producing more pollen than ever before, and they keep doing it longer, at least in North America.

Scientists have long noticed a prolongation of the pollen season, along with an increase in the pollen season. I am studyingPublished in the journal Proceedings of the National Academy of Sciences On February 16, he added some data to these observations and concluded that between 1990 and 2018 the pollen season was 20 days earlier and was extended by about 8 due to an increase in atmospheric carbon dioxide and higher average temperatures. The study authors also estimated that pollen increased by 21 percent over the same time period, partly due to climate change, and partly due to other factors: Climate change alone would account for an 8 percent increase.

The increase in the amount of pollen mainly affects trees and less grassy plants and some areas of the United States in particular: Texas, the southeastern states, and the Midwest. Another fact that emerges from the study is that the increase in pollen grains produced by plants has been greater in recent years than the time interval taken into account.

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To verify a link between an increase in pollen and climate change, the study authors used the so-called “attribution science” method, which is the same method used to estimate the extent of extreme weather events or major forest fires affected by global warming. Surveys of 60 pollen monitoring stations across the United States were analyzed and a correlation was sought between trends emerging from these data and different climate models. We also tried to identify other factors that contributed to the increase in pollen area by region, such as the increase in the number of plants.

The authors ’conclusion is that the impact of human-induced climate change is“ clearly detectable ”in pollen production and that this phenomenon is a“ closely related example ”of how climate change also affects people’s health. For some people, pollen allergy is just a nuisance, but for asthma patients it can be a real nuisance.

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There is no similar search to that published on Proceedings of the National Academy of Sciences To Italy.

Another study, Which dates back to 2019 and which was made by collecting data from different parts of Europe, as well as from Canada, the United States and South Korea, says that the increase in the maximum and minimum temperatures in recent decades may have contributed to prolonging the seasonal pollen that causes allergies and increases Produced at different locations in the Northern Hemisphere: This phenomenon was not actually observed with respect to the Italian and South Korean data that were considered in the study (related to Legnano, in Lombardy, and Seoul and Busan, in South Korea), but in these locations it did not change The minimum and maximum temperatures are particularly in the period for which the data are available. The increase in average temperatures due to global warming is not the same worldwide.