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<blockquote class="twitter-tweet" data-lang="ja"><p lang="en" dir="ltr">ððð 414.84 ppm <a href="https://twitter.com/hashtag/CO2?src=hash&ref_src=twsrc%5Etfw">#CO2</a> in Earthâs atmosphere on March 18, 2019 ðµï¸ðµï¸ HIGHEST daily average EVER at the Mauna Loa Observatory ðµï¸ðµï¸ </p></blockquote>
411.66 February average CO2 concentration at Mauna Loa sets a new record for monthly average. It is rare, but not unprecedented, in Keeling Curve history that it is set in a February, well before the peak month of May. â Keeling_Curve (@Keâ¦