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keelingcurve.bsky.social
Official daily update on atmospheric CO2 levels in the post-400 ppm era from Scripps Institution of Oceanography's iconic Keeling Curve.
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429.98 parts per million (ppm) CO2 in air 16-Apr-2025 keelingcurve.ucsd.edu

submitted 13 hours ago • 0 comments

429.77 parts per million (ppm) CO2 in air 15-Apr-2025 keelingcurve.ucsd.edu

submitted 1 day ago • 0 comments

430.04 parts per million (ppm) CO2 in air 14-Apr-2025 keelingcurve.ucsd.edu

submitted 2 days ago • 0 comments

430.06 parts per million (ppm) CO2 in air 13-Apr-2025 keelingcurve.ucsd.edu

submitted 3 days ago • 0 comments

430.06 parts per million (ppm) CO2 in air 12-Apr-2025 keelingcurve.ucsd.edu

submitted 4 days ago • 2 comments

430.08 parts per million (ppm) CO2 in air 11-Apr-2025 keelingcurve.ucsd.edu

submitted 5 days ago • 0 comments

429.93 parts per million (ppm) CO2 in air 10-Apr-2025 keelingcurve.ucsd.edu

submitted 6 days ago • 0 comments

Baseline reading not available, data too variable 09-Apr-2025 keelingcurve.ucsd.edu

submitted 7 days ago • 0 comments

Baseline reading not available, data too variable 08-Apr-2025 keelingcurve.ucsd.edu

submitted 8 days ago • 0 comments

Teaching the Keeling Curve in International Environmental Law has us reflecting on the role of climate science — then and now. Find out which @law.ucla.edu professor teared up in class this week. @keelingcurve.bsky.social @scrippsocean.bsky.social legal-planet.org/2025/04/09/t...

submitted 8 days ago • 0 comments

Read these moving words from our friend and longtime delegate to the @UNFCCC COP negotiations, @UCLA Enviro Law Professor Ted Parson, on what he thinks of when thinking about the Keeling Curve: legal-planet.org/2025/04/09/t... @UofCalifornia @NOAA #CO2 #climate

submitted 8 days ago • 0 comments

427.76 parts per million (ppm) CO2 in air 07-Apr-2025 keelingcurve.ucsd.edu

submitted 9 days ago • 0 comments

428.35 parts per million (ppm) CO2 in air 06-Apr-2025 keelingcurve.ucsd.edu

submitted 10 days ago • 0 comments

427.93 parts per million (ppm) CO2 in air 05-Apr-2025 keelingcurve.ucsd.edu

submitted 11 days ago • 0 comments

427.95 parts per million (ppm) CO2 in air 04-Apr-2025 keelingcurve.ucsd.edu

submitted 12 days ago • 0 comments

427.15 parts per million (ppm) CO2 in air 03-Apr-2025 keelingcurve.ucsd.edu

submitted 13 days ago • 0 comments

Baseline reading not available, data too variable 02-Apr-2025 keelingcurve.ucsd.edu

submitted 14 days ago • 0 comments

427.26 parts per million (ppm) CO2 in air 01-Apr-2025 keelingcurve.ucsd.edu

submitted 15 days ago • 1 comment

Baseline reading not available, data too variable 31-Mar-2025 keelingcurve.ucsd.edu

submitted 16 days ago • 0 comments

426.55 parts per million (ppm) CO2 in air 30-Mar-2025 keelingcurve.ucsd.edu

submitted 17 days ago • 0 comments

426.62 parts per million (ppm) CO2 in air 29-Mar-2025 keelingcurve.ucsd.edu

submitted 18 days ago • 1 comment

426.60 parts per million (ppm) CO2 in air 28-Mar-2025 keelingcurve.ucsd.edu

submitted 19 days ago • 0 comments

426.68 parts per million (ppm) CO2 in air 27-Mar-2025 keelingcurve.ucsd.edu

submitted 20 days ago • 2 comments

427.95 parts per million (ppm) CO2 in air 26-Mar-2025 keelingcurve.ucsd.edu

submitted 21 days ago • 0 comments

Baseline reading not available, data too variable 25-Mar-2025 keelingcurve.ucsd.edu

submitted 22 days ago • 0 comments

429.19 parts per million (ppm) CO2 in air 23-Mar-2025 keelingcurve.ucsd.edu

submitted 24 days ago • 0 comments

429.00 parts per million (ppm) CO2 in air 22-Mar-2025 keelingcurve.ucsd.edu

submitted 25 days ago • 5 comments

On @cleaninguppod.bsky.social, learn about the Keeling Curve & perspective on its current situation from Ralph Keeling. Includes chat w/pioneering trace gas researcher Ray Weiss, a leading force in the global #AGAGE program that monitors GHGs 1000s of times more potent than #CO2 youtu.be/iLgjC3C_3zI

submitted 26 days ago • 2 comments

Baseline reading not available, data too variable 21-Mar-2025 keelingcurve.ucsd.edu

submitted 26 days ago • 0 comments

428.84 parts per million (ppm) CO2 in air 20-Mar-2025 keelingcurve.ucsd.edu

submitted 27 days ago • 2 comments

Speaking of FAQs, here are more stories that explain aspects of the annual cycle of CO2 and how it is measured: keelingcurve.ucsd.edu/category/faqs/

submitted 28 days ago • 0 comments

428.52 parts per million (ppm) CO2 in air 19-Mar-2025 keelingcurve.ucsd.edu

submitted 28 days ago • 0 comments

For those new to following the Keeling Curve Bluesky feed, an invitation to explore keelingcurve.ucsd.edu for answers to frequent questions. Today is a great example: keelingcurve.ucsd.edu/2013/04/30/w...

submitted 29 days ago • 0 comments

Baseline reading not available, data too variable 18-Mar-2025 keelingcurve.ucsd.edu

submitted 29 days ago • 0 comments

427.24 parts per million (ppm) CO2 in air 17-Mar-2025 keelingcurve.ucsd.edu

submitted 30 days ago • 2 comments

427.37 parts per million (ppm) CO2 in air 16-Mar-2025 keelingcurve.ucsd.edu

submitted 31 days ago • 0 comments

427.50 parts per million (ppm) CO2 in air 15-Mar-2025 keelingcurve.ucsd.edu

submitted 32 days ago • 0 comments

427.42 parts per million (ppm) CO2 in air 14-Mar-2025 keelingcurve.ucsd.edu

submitted 33 days ago • 1 comment

428.07 parts per million (ppm) CO2 in air 13-Mar-2025 keelingcurve.ucsd.edu

submitted 34 days ago • 0 comments

428.11 parts per million (ppm) CO2 in air 12-Mar-2025 keelingcurve.ucsd.edu

submitted 35 days ago • 0 comments

💰🍀It's not a pot of gold, but we'll always argue that our ocean is a million times better than a pot of gold. 🌊 🌈 This stunning rainbow over #ScrippsPier was captured this morning by Brian Woodward, a research and development engineer with the Scripps Oceanography Coastal Processes Group.

submitted 36 days ago • 3 comments

427.61 parts per million (ppm) CO2 in air 11-Mar-2025 keelingcurve.ucsd.edu

submitted 36 days ago • 0 comments

For #SXSW attendees: Ralph Keeling will be at the @nrdc.org Ask A Scientist happy hour today schedule.sxsw.com/2025/events/...

submitted 37 days ago • 0 comments

Join Ralph Keeling, director of the Scripps CO2 program & @keelingcurve.bsky.social at #SXSW for tonight's “Ask A Scientist” Happy Hour! The conversation will center on questions about the climate crisis. 🕐 4:30–5:30 PM 📍Hilton Austin Downtown More information: schedule.sxsw.com/2025/events/...

submitted 37 days ago • 0 comments

"Two months ahead of the usual annual peak of CO2 concentration in the atmosphere, parts per million in air exceeded 430. Comment from Ralph Keeling, director of the @Scripps_Ocean CO2 program: "Crossing 430 ppm was...

submitted 37 days ago • 1 comment

430.33 parts per million (ppm) CO2 in air 10-Mar-2025 keelingcurve.ucsd.edu

submitted 37 days ago • 1 comment

428.88 parts per million (ppm) CO2 in air 09-Mar-2025 keelingcurve.ucsd.edu

submitted 38 days ago • 0 comments

Baseline reading not available, data too variable 08-Mar-2025 keelingcurve.ucsd.edu

submitted 39 days ago • 0 comments

428.49 parts per million (ppm) CO2 in air 07-Mar-2025 keelingcurve.ucsd.edu

submitted 40 days ago • 0 comments