Environment & Energy

hatrack

(59,583 posts) Fri Apr 12, 2013, 12:43 PM Apr 2013

5 replies

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Wondering Aloud: 2/13 Atmospheric CO2 Update 5 March; 12:20 PM 12 April Still No Update For 3/13 (Original Post) hatrack Apr 2013 OP

You could try the weekly Moana Loa record OnlinePoker Apr 2013 #1

Do you know why the concentration seems to fluctuate? truebrit71 Apr 2013 #2

Aah...that makes sense.. truebrit71 Apr 2013 #5

(5,719 posts)

1. You could try the weekly Moana Loa record

Fri Apr 12, 2013, 12:52 PM

Apr 2013

(20,805 posts)

2. Do you know why the concentration seems to fluctuate?

Fri Apr 12, 2013, 01:10 PM

Apr 2013

The overall trend seems to be accelerating upwards, but I was unaware that it went up and down during the year..?

(59,583 posts)

4. Seasonal fluctuation - most of the landmass in the northern hemisphere means most vegetation as well

Fri Apr 12, 2013, 01:15 PM

Apr 2013

So, when deciduous trees drop or leaf out, it's enough to push the annual cycle up and down.

(20,805 posts)

5. Aah...that makes sense..

Fri Apr 12, 2013, 01:17 PM

Apr 2013

..thanks!

(59,583 posts)

3. Thanks - looks like I went to every Mauna Loa page except the right one

Fri Apr 12, 2013, 01:14 PM

Apr 2013