Articles on Rainfall

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Trees killed by drought and an outbreak of bark beetles in California’s Tahoe National Forest in 2023. AP Photo/Godofredo A. Vásquez

Trees ‘remember’ wetter times − never having known abundant rain could buffer today’s young forests against climate change

Water availability regulates tree growth and can have ‘legacy effects’ long after conditions change.
Atmospheric rivers are long filaments of moisture that curve poleward. Several are visible in this satellite image. Bin Guan, NASA/JPL-Caltech and UCLA

Atmospheric rivers are shifting poleward, reshaping global weather patterns

These powerful ‘rivers in the sky’ provide a huge share of annual precipitation in many regions, including California. They can also melt sea ice, with global climate implications.
View of Papineau Lake in the Kenauk forest, in the Outaouais region of Quebec. (Water and Land Conservation Research Chair)

Groundwater’s invisible role in sustaining lakes

In Canada, groundwater is generally abundant and lakes are ubiquitous. But the exchanges between groundwater and lakes are complex and often invisible.

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