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Aaron Putnam

@aaronputnam.bsky.social

Dad. Husband. Earthling. Associate Professor of Earth Science at the University of Maine. I am interested in glaciers and climate in the past, present, and future.

1453 Posts2555 Follower2021 Folgt
Kate Marvel@drkatemarvel.bsky.social · last wk.

Scientists warned you about: ♨️ more/longer/hotter heatwaves (hot planet=hot weather) 🌀 stronger storms (warm water=hurricane food) 🌧️ downpours (warm air holds more water vapor) 🌵 droughts (warm air is thirstier) 🔥 fire weather (hotter, drier) 🌊 sea level rise (land ice melts, warm water expands)

David Ho@davidho.bsky.social · last wk.

There's a lot to unpack in this article about ocean alkalinity enhancement. But the bottom line is that it is way too early to be selling credits for marine CO₂ removal (mCDR) when we don't have a trustworthy way to do carbon accounting for mCDR. 🌊🧪 carbon-pulse.com/530737/

Most mCDR company science is otherwise focused on proving that a particular method actually removes CO2 from the atmosphere, and does so safely. That's established through monitoring, reporting, and verification (MRV) measures, developed by companies that set the rules for generating carbon credits, such as Isometric. Burt acknowledged that this is itself an active area of debate. He argued that Planetary's role is to trust that the MRV measures are robust enough for the company to focus on feeding the right data to the carbon credit-generating methodologies. David Ho, an oceanography professor at the University of Hawaii, was more critical. "It's way too early to be selling credits and claiming that we have any certainty about anything," Ho told Carbon Pulse. Ho said the methodology used to calculate Planetary's carbon credits relies on the use of a single model to determine the volume of CO2 removal. If another model was used, it would generate a different value, he suggested. Scientists at the IPCC run many models and take the average as a fair result, he added. Ho is a lead author for an upcoming IPCC methodology report on the latest CDR science across land, air, and sea. The report could serve as independent proof that the emergent industry is an effective way of removing CO2 from the atmosphere. However, a report outline finalised in late 2025 left OAE out of the table of contents. "You have to ask, why is that? If OAE is really the promising one that everybody's putting money into, why isn't it in that methodology report?" asked Ho.
Jeff Berardelli @weatherprof.bsky.social · 2w ago

The biggest heat dome on the planet! Sound ⬆️ Starting now, the biggest #heatdome on planet Earth will make a home here in the US, from the MS River West! It’s gonna be a brutal week with highs up to 120°+ in spots! Meanwhile in the East, it will be cooler than normal, and stormy in #Florida.

Jan Rosenow@janrosenow.bsky.social · 2w ago

Pornainen, Finland (pop 5,000) is now heated by a silo of crushed soapstone. I spoke to CNBC about it. 100 MWh, charged when power is cheap, emissions down ~70%. Days to weeks of storage, no critical minerals. www.cnbc.com/2026/07/25/f...

Finland’s radical answer to renewable energy’s biggest headache: The world’s largest sand battery

A small Finnish town has turned to the world's largest commercial sand battery to tackle a major hurdle in the energy transition: intermittency.

cnbc.com

Zack Labe@zacklabe.com · 3w ago

Thursday El Niño update - Conditions remain favorable for further strengthening, with a number of similarities to the big 1997 event. The warm pool continues to stretch quite far east, and there's just already a remarkable amount of warmth across the tropical Pacific. Data from NOAA OISSTv2.1 🌊

Line graph time series of daily sea surface temperature anomalies in the Nino3.4 region. Years are shown from 1982 to 2025 in shades of blue to light yellow, and 2026 is shown in red. Climatologically, the largest anomalies are during the boreal winter in terms of magnitude. Data is from OISSTv2.1. Map of July 14, 2026 average sea surface temperature anomalies in the ENSO monitoring regions. Data is from NOAA OISSTv2.1 with anomalies relative to a 1991-2020 baseline.Graphic showing the 1-week change in sea surface temperature anomalies across the tropical eastern Pacific Ocean. Data is from NOAA OISSTv2.1Graphic showing the 4-week change in sea surface temperature anomalies across the tropical eastern Pacific Ocean. Data is from NOAA OISSTv2.1.
PLOS Climate@plosclimate.org · 3w ago

Been watching the #WorldCup and thinking about the impacts of extreme weather conditions? New research by Dimitri Defrance and Tiffanie Lescure establishes a quantitative foundation for climate-aware sport scheduling and adaptation strategies in a warming world 👇 journals.plos.org/climate/arti...

Global climate risks for outdoor sports under CMIP6 scenarios: A multi-indicator assessment based on WBGT, Heat Index, heavy rainfall, and heatwaves

Outdoor sports are increasingly exposed to climatic conditions that challenge athlete safety, performance and event organisation. Despite extensive physiological and epidemiological evidence on heat s...

journals.plos.org

Every Film Now@everyfilmnow.bsky.social · 3w ago

Laura Dern pays tribute to Sam Neill. “Sam was my beloved lifetime friend. He showed me the depths of loyalty, protectiveness and love, always with the driest wit. He was a true and noble gentleman, wrapped up in my dream leading man. I will love you forever, Dr. Alan Grant.”

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Jacquelyn Gill@jacquelyngill.bsky.social · 4w ago

Monday is the deadline for public comment! The Heritage Foundation has been mobilizing its members to leave comments in favor of the rule change, so every unique comment matters (don’t use a form letter or copy/paste—similar comments are batched and treated as one).

Bethany Brookshire@beebrookshire.bsky.social · 4w ago

There's an OMB rule change that would require political oversight of scientific grants, and could pull any that don't "reflect presidential priorities" Another country has tried this before! It was the USSR and it was called Lysenkoism. By @thsaey.bsky.social www.sciencenews.org/article/omb-...