Mark Johnson
@ecohydrologist.bsky.social
Reposted by Mark Johnson
Why is the global hydrologic cycle accelerating, with increases in both wet & dry extremes like heavy downpours & flash droughts? Blame the increased water vapor-holding (and water vapor-evaporating) capacity of the "expanding atmospheric sponge."
Why is the hydrologic cycle accelerating? Blame the "expanding atmospheric sponge..."
On a warming planet, rising temperatures rapidly increase the air's capacity to "hold" water vapor--by around ~7% per °C (or around ~4% per °F). This leads to the "Expanding Atmospheric Sponge Effect"--whereby the warming atmosphere acts like a progressively larger kitchen sponge, capable of both ab
www.youtube.com
August 21, 2025 at 8:45 PM
Why is the global hydrologic cycle accelerating, with increases in both wet & dry extremes like heavy downpours & flash droughts? Blame the increased water vapor-holding (and water vapor-evaporating) capacity of the "expanding atmospheric sponge."
Reposted by Mark Johnson
🏔 📡 A new paper from Steve Chignell, Yeonuk Kim, & Mark Johnson questions an existing mental model of the Bale Mountains, a volcanic region in south-central Ethiopia, using remote sensing data to map spatial and temporal patterns:
doi.org/10.1002/hyp....
doi.org/10.1002/hyp....
April 7, 2025 at 7:44 PM
🏔 📡 A new paper from Steve Chignell, Yeonuk Kim, & Mark Johnson questions an existing mental model of the Bale Mountains, a volcanic region in south-central Ethiopia, using remote sensing data to map spatial and temporal patterns:
doi.org/10.1002/hyp....
doi.org/10.1002/hyp....
Reposted by Mark Johnson
In our new review on 'Hydroclimate volatility on a warming Earth' led by @weatherwest.bsky.social, we show that global-averaged subseasonal and interannual whiplash have increased substantially in the past and further increases are anticipated with ongoing warming: www.nature.com/articles/s43...
Hydroclimate volatility on a warming Earth - Nature Reviews Earth & Environment
Rapid transitions between extreme wet and extreme dry conditions — ‘hydroclimate whiplash’ — have marked environmental and societal impacts. This Review outlines observed and projected changes in hydr...
www.nature.com
January 13, 2025 at 5:05 PM
In our new review on 'Hydroclimate volatility on a warming Earth' led by @weatherwest.bsky.social, we show that global-averaged subseasonal and interannual whiplash have increased substantially in the past and further increases are anticipated with ongoing warming: www.nature.com/articles/s43...
It’s been said that “Ain’t ain’t a word”, but I never really believed it
January 12, 2025 at 9:44 PM
It’s been said that “Ain’t ain’t a word”, but I never really believed it
Reposted by Mark Johnson
Did you know how many billions of dollars California's Low Carbon Fuel Standard makes drivers pay to out-of-state biofuel producers?
Turns out it's a lot — a peak of about $2.9 billion in 2021, which is more than enough to give a $7500 rebate to all of the battery EVs sold in 2023.
Turns out it's a lot — a peak of about $2.9 billion in 2021, which is more than enough to give a $7500 rebate to all of the battery EVs sold in 2023.
Should California Subsidize Out-of-State Biofuels or In-State Electric Vehicles? - Kleinman Center for Energy Policy
Energy policy research from the University of Pennsylvania
kleinmanenergy.upenn.edu
December 5, 2024 at 12:23 AM
Did you know how many billions of dollars California's Low Carbon Fuel Standard makes drivers pay to out-of-state biofuel producers?
Turns out it's a lot — a peak of about $2.9 billion in 2021, which is more than enough to give a $7500 rebate to all of the battery EVs sold in 2023.
Turns out it's a lot — a peak of about $2.9 billion in 2021, which is more than enough to give a $7500 rebate to all of the battery EVs sold in 2023.
Reposted by Mark Johnson
Adding alkalinity to wastewater as a CO₂ removal (#CDR) strategy shifts CO₂ to carbonate and bicarbonate, potentially decreases CO₂ flux to the atmosphere. 👀
www.nature.com/artic...
www.nature.com/artic...
Magnesium hydroxide addition reduces aqueous carbon dioxide in wastewater discharged to the ocean
Communications Earth & Environment - Alkalinity enhancement of wastewater through addition of magnesium hydroxide greatly reduces aqueous CO2 on discharge to the ocean, according to experiments...
www.nature.com
July 10, 2024 at 8:11 PM
Adding alkalinity to wastewater as a CO₂ removal (#CDR) strategy shifts CO₂ to carbonate and bicarbonate, potentially decreases CO₂ flux to the atmosphere. 👀
www.nature.com/artic...
www.nature.com/artic...