Summers in the Northern Hemisphere tend to be extremely irregular in length

The weather crisis is affecting our planet to such an extent that summer in the Northern Hemisphere could last for half a year by 2100, scientists have warned.

This does not mean staying in the sun for long periods of time, but has a dramatic impact on human health, agriculture and ecology.

While an extended period of balmy weather may initially seem appealing, such a significant change in asons tuo causes severe disruption to ecosystems that are always balanced in terms of time and temperature.

Changing migration patterns affecting the food chain, ranging from extended heatwaves and wildfires, the study concludes that if global warming continues at current rates, the threats to humanity will intensify over time – and changes are already taking place.

Seasonal cycleNorthern Hemisphere season record and forecast shift. (Wang et al. 2020, Geophysical Research Letters, AGU)

“Global warming makes winters shorter and warmer, summers longer and warmer,” says Yuping Guan, a physicist oceanographer at the Chinese Academy of Sciences. May snow, and such. “

Researchers looked at climatic historical daily weather statistics from 1952 to 2011, marking the days with the highest temperatures of 25 percent and the coldest months of the winter months.

The analysis revealed that summer increased from an average of 78 days to 95 days from 1952 to 2011 and winter shrunk from 76 days to 73 days. Spring and autumn are also compressed by 9 days and 5 days, respectively. While spring and autumn and summer are slowly starting, autumn and winter are starting later.

Next the team turned to future climate models Dello to predict how these trends would continue until the end of the century, and discovered that the Northern Hemisphere may have a summer that begins in early May and ends in late October by 2100.

It’s a potentially dangerous development for all sorts of reasons – it would mean more time with allergenic pollen in the air, for example, and more spread of the disease-carrying tropical mosquitoes, just to name two results.

Guan says, “Numerous studies have already shown that changing asons causes significant environmental and health risks.

Based on data collected since 1952, the Mediterranean region and the Tibetan plateau have seen the most changes when it comes to seasonal cycles, but it is likely that any part of the Earth will be able to escape the effects of climate. Change.

While temperatures are always shifting upwards, we are seeing the world’s weather patterns change from the point of no return – and the impact of each climate variation on the oceans and the land below.

If we are to be able to pull back from the brink of a planet that is out of our control, it is important to collect as much data as possible to inform the hard decisions that are needed.

“This is a good comprehensive starting point for understanding the effects of seasonal change,” says Scott Sheridan, a climate scientist at Kent State University who was not involved in the study.

Research has been published in Geographical research papers.