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The Keeling Curve

@keelingcurve.bsky.social

4K followers 343 following 843 posts

Official daily update on atmospheric CO2 levels in the post-400 ppm era from Scripps Institution of Oceanography's iconic Keeling Curve.

Posts Replies Media

The Keeling Curve @keelingcurve.bsky.social · 2h

Baseline reading not available, data too variable 03-Oct-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 21h

425.14 parts per million (ppm) CO2 in air 02-Oct-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 21h

424.89 parts per million (ppm) CO2 in air 01-Oct-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 01/10/2026

Baseline reading not available, data too variable 30-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 01/10/2026

425.47 parts per million (ppm) CO2 in air 29-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 01/10/2026

Baseline reading not available, data too variable 28-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 24/09/2026

425.54 parts per million (ppm) CO2 in air 23-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 23/09/2026

Baseline reading not available, data too variable 22-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 22/09/2026

425.04 parts per million (ppm) CO2 in air 21-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 21/09/2026

426.00 parts per million (ppm) CO2 in air 20-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 20/09/2026

426.10 parts per million (ppm) CO2 in air 19-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 19/09/2026

426.06 parts per million (ppm) CO2 in air 18-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 18/09/2026

Baseline reading not available, data too variable 17-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 17/09/2026

425.97 parts per million (ppm) CO2 in air 16-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 16/09/2026

424.46 parts per million (ppm) CO2 in air 15-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 16/09/2026

Baseline reading not available, data too variable 14-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 13/09/2026

424.86 parts per million (ppm) CO2 in air 12-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 12/09/2026

425.29 parts per million (ppm) CO2 in air 11-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 11/09/2026

425.44 parts per million (ppm) CO2 in air 10-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 09/09/2026

426.53 parts per million (ppm) CO2 in air 08-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 08/09/2026

426.27 parts per million (ppm) CO2 in air 07-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 06/09/2026

Baseline reading not available, data too variable 05-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 05/09/2026

Belated! Baseline reading not available, data too variable 03-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 05/09/2026

Baseline reading not available, data too variable 04-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 03/09/2026

426.75 parts per million (ppm) CO2 in air 02-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 03/09/2026

426.66 parts per million (ppm) CO2 in air 01-Sep-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 01/09/2026

Baseline reading not available, data too variable 31-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 31/08/2026

Baseline reading not available, data too variable 30-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 30/08/2026

Baseline reading not available, data too variable 29-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 29/08/2026

Baseline reading not available, data too variable 28-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 28/08/2026

427.03 parts per million (ppm) CO2 in air 27-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 28/08/2026

426.87 parts per million (ppm) CO2 in air 26-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 26/08/2026

426.75 parts per million (ppm) CO2 in air 25-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 25/08/2026

Baseline reading not available, data too variable 24-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

Reposted by The Keeling Curve

Ryan Katz-Rosene, PhD @ryankatzrosene.bsky.social · 23/08/2026

And we have a new all-time record warm *absolute* temperature for the oceans, according to ERA5 (which goes back to 1940): August 21st likely marked the warmest Sea Surface Temperatures have been for the entire Holocene period. Should be major news!

The Keeling Curve @keelingcurve.bsky.social · 23/08/2026

426.63 parts per million (ppm) CO2 in air 22-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 22/08/2026

426.75 parts per million (ppm) CO2 in air 21-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 20/08/2026

426.68 parts per million (ppm) CO2 in air 19-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 19/08/2026

426.65 parts per million (ppm) CO2 in air 18-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 18/08/2026

426.72 parts per million (ppm) CO2 in air 17-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 15/08/2026

427.65 parts per million (ppm) CO2 in air 14-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 14/08/2026

427.16 parts per million (ppm) CO2 in air 13-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 13/08/2026

427.50 parts per million (ppm) CO2 in air 12-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 12/08/2026

427.73 parts per million (ppm) CO2 in air 11-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 11/08/2026

Baseline reading not available, data too variable 10-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 10/08/2026

Baseline reading not available, data too variable 09-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 09/08/2026

427.45 parts per million (ppm) CO2 in air 08-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 09/08/2026

427.45 parts per million (ppm) CO2 in air 08-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 08/08/2026

427.99 parts per million (ppm) CO2 in air 07-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.

The Keeling Curve @keelingcurve.bsky.social · 07/08/2026

428.20 parts per million (ppm) CO2 in air 06-Aug-2026 keelingcurve.ucsd.edu

keelingcurve.ucsd.edu

The Keeling Curve

The Keeling Curve is a daily record of global atmospheric carbon dioxide concentration maintained by Scripps Institution of Oceanography at UC San Diego.