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Environment & Energy

hatrack

(59,592 posts) Sat Mar 8, 2014, 10:30 AM Mar 2014

February 2014 Atmospheric CO2 398.03 ppm; February 2013 396.80; February 2012 393.60

http://www.co2now.org

3 replies

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February 2014 Atmospheric CO2 398.03 ppm; February 2013 396.80; February 2012 393.60 (Original Post) hatrack Mar 2014 OP

Shameless selfie hatrack Mar 2014 #1

Yikes! k&r for exposure. n/t Laelth Mar 2014 #2

We were briefly over 400 in May of last year, for a few days . . . . hatrack Mar 2014 #3

hatrack

(59,592 posts)

1. Shameless selfie

Reply to hatrack (Original post)

Sat Mar 8, 2014, 12:35 PM

Mar 2014

Laelth

(32,017 posts)

2. Yikes! k&r for exposure. n/t

Reply to hatrack (Original post)

Sat Mar 8, 2014, 12:47 PM

Mar 2014

-Laelth

hatrack

(59,592 posts)

3. We were briefly over 400 in May of last year, for a few days . . . .

Reply to Laelth (Reply #2)

Sat Mar 8, 2014, 12:55 PM

Mar 2014

I'm guesstimating that we'll hit 400 by the end of March, and remain there for a few weeks, and then 400 again in February 2015, remaining for a few months.

If you track the dailies on Scripps, there can be day-to-day variability of .3 to .5 ppm, given the vagaries of prevailing winds and storms.

Any bets on when 400 is permanently in the rearview? I'll put my money on May of 2016.

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