File talk:Vostok 420ky 4curves insolation.jpg
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Graph shows "current period" but is only 280ppm CO2, That's not "current." What is year zero?[编辑]
Raquel Baranow (留言) 06:18, 6 March 2015 (UTC)
![06:18, 6 March 2015 (UTC)](https://commons.wikimedia.org/wiki/File_talk:Vostok_420ky_4curves_insolation.jpg#c-Raquel_Baranow-2015-03-06T06:18:00.000Z-Graph_shows_"current_period"_but_is_only_280ppm_CO2,_That's_not_"current."_What_){kind=link}
- The zero year on the graph is preindustrial when CO2 was 284.3ppm in 1832. Source Raquel Baranow (留言) 14:44, 6 March 2015 (UTC)
