satohhide https://blog.hatena.ne.jp/satohhide/ 新温暖化メモ https://satohhide.hatenablog.com/ <blockquote class="twitter-tweet"><p lang="en" dir="ltr">▼▼ CO2 in the atmosphere dropped to 413.69 ppm on February 28, 2020 from 414.12 ppm a year ago ▼▼ Mauna Loa Observatory <a href="https://twitter.com/NOAA?ref_src=twsrc%5Etfw">@NOAA</a> data &amp; graphic: <a href="https://t.co/MZIEphYygh">">ht… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsatohhide.hatenablog.com%2Fentry%2F2020%2F03%2F01%2F073233" title="CO2濃度前年比初のマイナス、新型コロナウィルス効果？ - 新温暖化メモ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2020-03-01 07:32:33 rich https://satohhide.hatenablog.com/entry/2020/03/01/073233 1.0 100%