Short Wave An Atmospheric River Runs Through It
Jan 6, 2023
Daniel Swain, a climate scientist with UCLA and the National Center for Atmospheric Research, dives into the fascinating world of atmospheric rivers. He explains how these narrow plumes of wet air can unleash devastating floods and landslides in California. Swain emphasizes the critical role of climate change in intensifying these phenomena, leading to more severe weather patterns. He also discusses the balancing act between drought relief and increased flood risks, highlighting the urgent need for adaptive strategies in a warming climate.
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Atmospheric Rivers: Rivers in the Sky
- Atmospheric rivers are concentrated corridors of water vapor, transporting volumes many times that of the Mississippi.
- They're a key part of the climate system, moving water from oceans to higher latitudes and land.
Forces Shaping Atmospheric Rivers
- Atmospheric rivers are shaped by prevailing winds (westerlies) and storm systems.
- These winds push them from west to east, influencing weather patterns in mid-latitude regions.
Geographic Impact of Atmospheric Rivers
- Atmospheric rivers primarily impact west coasts due to prevailing westerly winds.
- Mountains like the Rockies and Andes block their eastward progress, creating regional differences.