A River Runs above Us – Hakai Magazine

Atmospheric rivers occur all over the world in this global view from February, 2017. Illustration courtesy of NASA/Goddard Space Flight Center Scientific Visualization Studio - Lead Animator: Horace Mitchell (NASA/GSFC), VIRRS Suomi NPP natural color image courtesy of NASA/Earth Observatory/Jesse Allen)

In mid-November 2021, a great storm begins brewing in the central Pacific Ocean north of Hawai‘i. Especially warm water, heated by the sun, steams off the sea surface and funnels into the sky.

A tendril of this floating moisture sweeps eastward across the ocean. It rides the winds for a day until it reaches the coasts of British Columbia and Washington State. There, the storm hits air turbulence, which pushes it into position—straight over British Columbia’s Fraser River valley….

Volcano? Climate change? Bad luck? – the Los Angeles Times

April 17, 2023 Air Mass RGB imagery courtesy of NOAA.

As winter approached, few anticipated what was about to hit California. Mired in a serious drought, the state was suddenly battered by an onslaught of 31 atmospheric river storms in a matter of months. While the number alone isn’t exceptional, the location, intensity and duration of these storms had a transforming effect on California’s climate. Record snowfall. Deadly flooding…But one thing remains a mystery: Why did so many of these bands of water vapor, many back-to-back, slam into California?

Bomb cyclone, atmospheric river, polar vortex: How our weather terminology has grown with recent wild storms – the Los Angeles Times

March 31 - April 1, 2023 Satellite animation showing weather patterns off the coast of California (courtesy of NOAA)

Californians have been warned over the past few months about weather ranging from a “vicious heat dome” to back-to-back “atmospheric rivers,” and the always-concerning “bomb cyclone.” While it might feel as though recent weather has been dominated by a string of new phenomena, experts say these terms and events are well-established in the scientific world but simply novel to much of general public…

On the Coast: Before and After the Parade of Atmospheric Rivers – Planet Snapshots issue 59 via Medium

Swirls of sediment off the coast of California on January 17, 2023, and a view of same area off the coast of California under more typical conditions on January 23, 2023 (Satellite image by Joshua Stevens, courtesy of NASA earth observatory).

California is left drenched, flooded, and perhaps a little hopeful after recurring atmospheric rivers pummeled the state for 2 weeks straight. The rains are a small reprieve for the area’s years-long drought. But the sheer volume of rainfall was much more than the parched landscape could handle. With a turn of the faucet, the state went from too dry to too wet in what’s called a “weather whiplash,” transforming the Golden State to shades of brown…

Global Weather Patterns and Coastlines

Coasts are sensitive to sea level rise, changes in the frequency and intensity of storms, increases in precipitation, and warmer ocean temperatures. In addition, rising atmospheric concentrations of carbon dioxide (CO2) are causing the oceans to absorb more of the gas and become more acidic. This rising acidity can have significant impacts on coastal and marine ecosystems.

The impacts of climate change are likely to worsen problems that coastal areas already face. Confronting existing challenges that affect man-made infrastructure and coastal ecosystems, such as shoreline erosion, coastal flooding, and water pollution, is already a concern in many areas. Addressing the additional stress of climate change may require new approaches to managing land, water, waste, and ecosystems…