Phys.org: Earth science

As a late-summer monsoon spread across California in recent weeks, it delivered hundreds of thousands of lightning strikes—record numbers in August and the first week of September. Those sparked hundreds of wildfires and, for many hikers, sheer terror.

Between a third and half of all soil carbon on Earth is stored in peatlands, says Tom and Marie Patton Distinguished Professor Joel Kostka. These wetlands—formed from layers and layers of decaying plant matter—span from the Arctic to the tropics, supporting biodiversity and regulating global climate.

If it feels like headlines reporting 100 or 1,000-year floods and megafires seem more frequent these days, it's not your imagination.

As I walked out onto the frozen Arctic water off Utqiagvik, Alaska, for the first time, I was mesmerized by the icescape.

The water cycle has become increasingly erratic and extreme, swinging between deluge and drought, according to a new report from the World Meteorological Organization (WMO). It highlights the cascading impacts of too much or too little water on economies and society.

Streamflow drought—when substantially less water than usual moves through rivers—can seriously disrupt the welfare of nearby communities, agriculture, and economies. Synchronous drought, in which multiple river basins experience drought simultaneously, can be even more severe and far-reaching.

In May, a landslide above Blatten in the canton of Valais buried most of the village under a mass of ice, mud and rock, an event that has prompted in-depth research. At a recent conference in Innsbruck, UZH researcher Christian Huggel presented his findings on the link between the landslide and climate change.