Do you have the sense that summers feel different than when you were younger? That they start earlier, arrive quickly and remain intense until the fall? If you live in the mid-latitudes of either the Northern or Southern Hemispheres, chances are you answered yes.

For many, the idea of a longer and warmer summer conjures up images of spending more time at the beach, playing sports or enjoying family picnics, but there are concerning downsides. Summer is also the season of wildfires, droughts and heatwaves, like the June 2021 heat dome in the Pacific Northwest of North America.

Recent research shows that devastating heat dome event was amplified by its proximity to the summer solstice, which is the calendar start of summer, and by ground already dried out from earlier spring warmth. Earlier starts to the warmest season are making preconditions worse in areas prone to wildfire, extending fire seasons.

My colleagues and I at the University of British Columbia recently published research into how summer conditions are lasting longer and transitions into and out of summer are becoming more abrupt.

The cumulative heat in summers is rising, meaning there is less relief from warm temperatures once the season begins. Human-driven climate change is impacting the warmest........

© The Conversation