Politics, Weather, Photography, and the Dog
Saturday 3 May 2014

The Scripps Institution of Oceanography at UCSD reported this week that atmospheric carbon dioxide averaged more than 400 ppm in April, a new milestone:

Every single daily carbon dioxide measurement in April 2014 was above 400 parts per million. That hasn’t happened in nearly a million years, and perhaps much longer. Climate scientists have proven that the rise in human-produced greenhouse gases like carbon dioxide are “extremely likely” to be the dominant cause of global climate change. The likelihood of dangerous impacts—like sea level rise, hotter heat waves, and certain types of extreme weather—increases with each incremental annual rise in atmospheric carbon dioxide.

Carbon dioxide levels have increased by more than 40 percent since humans first started burning fossil fuels in large quantities about 250 years ago. Once released, the carbon dioxide from coal, oil, and natural gas burning can remain in the atmosphere for centuries. Thus, the crux of the problem: There just hasn’t been enough time yet since those first coal-powered factories in Europe for the atmosphere to return to equilibrium. What’s more, the pace of fossil fuel burning has since dramatically quickened—there’ve been more greenhouse gas emissions in the last 40 years than over the previous 200—so carbon dioxide buildup keeps accelerating.

So what about the hockey stick? If you look at the last 800,000 years, the chart of CO2 concentration looks more like a brick wall:

Scary.

Saturday 3 May 2014 08:11:43 CDT (UTC-05:00)  |  | US | World | Weather#
Search
On this page....
The 400
Countdowns
The Daily Parker +3268d 12h 38m
Parker's 9th birthday 233d 00h 35m
My next birthday 314d 04h 40m
Categories
Aviation (338) Baseball (110) Best Bars (7) Biking (44) Chicago (893) Cubs (197) Duke (132) Geography (330) Higher Ground (5) Jokes (282) Kitchen Sink (638) London (53) Parker (189) Daily (204) Photography (143) Politics (303) US (1080) World (252) Raleigh (21) Readings (8) Religion (66) San Francisco (87) Software (200) Blogs (74) Business (225) Cloud (89) Cool links (132) Security (98) Travel (202) Weather (688) Astronomy (85) Windows Azure (59) Work (54) Writing (8)
Links
Archive
<October 2014>
SunMonTueWedThuFriSat
2829301234
567891011
12131415161718
19202122232425
2627282930311
2345678
Full archive
Blogroll
About
David Braverman and Parker
David Braverman is a software developer in Chicago, and the creator of Weather Now. Parker is the most adorable dog on the planet, 80% of the time.
Legal
All content Copyright ©2014 David Braverman.
Creative Commons License
The Daily Parker by David Braverman is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License, excluding photographs, which may not be republished unless otherwise noted.
Admin Login
Sign In
Blog Stats
Total Posts: 4519
This Year: 417
This Month: 32
This Week: 8
Comments: 0