Environment & Energy

hatrack

(59,597 posts) Thu Mar 5, 2015, 09:03 AM Mar 2015

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This message was self-deleted by its author (Original Post) hatrack Mar 2015 OP

Weren't we over 400 for 3 mos last year? Blues Heron Mar 2015 #1

I wondered the same thing. GliderGuider Mar 2015 #2

Blues Heron

(5,948 posts)

1. Weren't we over 400 for 3 mos last year?

Reply to hatrack (Original post)

Thu Mar 5, 2015, 09:26 AM

Mar 2015

http://www.climatecentral.org/news/co2-milestone-400-ppm-climate-17692

GliderGuider

(21,088 posts)

2. I wondered the same thing.

Reply to Blues Heron (Reply #1)

Thu Mar 5, 2015, 10:02 AM

Mar 2015

According to the data at http://www.esrl.noaa.gov/gmd/ccgg/trends/ , last year we had three monthly means over 400:

April, 2014: 401.29
May, 2014: 401.78
June, 2014: 401.15

This year we should see 5 or 6 months over 400.