Question Details

In which month (full month) will the mean average CO2-value surpass 400 ppm in 2014 ?

In which month (full month) will the mean average CO2-value surpass 400 ppm in 2014 ?

Asked by: Super UserJosef Biesenberger in Science » Environment
Settled on 04/22/2014 15:25 Settled by Super Userkruijs
Winning option:in April 2014 There is typically seasonal fluctuation in the parts per million (ppm) of carbon dioxide, according to scientists who track the levels. That explains why, after hitting 400 for the first time in recorded history last May, the levels declined soon after. But they hit 400 ppm again in mid-March, and have stayed above that level for all of April.

http://www.huffingtonpost.com/2014/04/22/carbon-dioxide-climate-change_n_5187844.html

Predictions
in February 2014 or earlier
0.3% →
in March 2014
0.5% →
in April 2014
97.1% →
in May 2014
1.0% →
later or never
1.1% →

Background

chart with monthly data: http://www.esrl.noaa.gov/gmd/ccgg/trends/#global

weekly data: ftp://ftp.cmdl.noaa.gov/ccg/co2/trends/co2_weekly_mlo.txt
monthly data: ftp://ftp.cmdl.noaa.gov/ccg/co2/trends/co2_mm_mlo.txt

Find similar: CO2, ppm, carbon dioxide, emissions, greenhouse, environment, warming

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