4 ms·
For those wondering why there is zig zag in the plot after 1958. The data source changed at that date [1]. * 1000 - 1958: Historical CO2 record from the Law
by rsecora 3y ago
For those wondering why there is zig zag in the plot after 1958. The data source changed at that date [1].
* 1000 - 1958: Historical CO2 record from the Law Dome DE08, DE08-2, and DSS ice cores
* 1958 - Today: in situ air measurements at Mauna Loa, Observatory, Hawaii.
[1] https://www.co2levels.org/#sources https://www.co2levels.org/#sources
- benrutter 3y agoI came to ask exactly this! Although, any clues for why the Hawaii measurements follow that pattern?
- trescenzi 3y agoIt's due to vegetation growth during the summer in the northern hemisphere https://www.climate.gov/news-features/understanding-climate/climate-change-atmospheric-carbon-dioxide#:~:text=The%20seasonal%20cycle%20of%20highs,is%20driven%20by%20human%20activities https://www.climate.gov/news-features/understanding-climate/....
- benrutter 3y agoOh wow! So interesting to see such a concrete impact from vegetation!
- AnotherGoodName 3y agoHawaii does month by month measurement and the seasons have vastly different CO2 levels due to plant activity. Going back further was just a rough yearly average. The zig zags are a reasonably smooth yearly wave if you zoom into them.
- deleted 3y ago[deleted]