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Keeling曲线

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zhoukuanbo 发表于 2010-11-30 11:33:00 | 显示全部楼层 |阅读模式
本帖最后由 Ben 于 2010-12-2 06:33 编辑

给大家介绍一下,现代大气CO2增加的事实到底是怎么被发现的。这其中最重的就是一位伟大的科学家叫做Keeling,这条CO2随时间变化的曲线就是以他的名字命名的。看看来自Wikipedia上面的报道:

From Wikipedia, http://en.wikipedia.org/wiki/Keeling_Curve

The Keeling Curve is a graph showing the variation in concentration of atmospheric carbon dioxide since 1958. It is based on continuous measurements taken at the Mauna Loa Observatory in Hawaii under the supervision of Charles David Keeling. Keeling's measurements showed the first significant evidence of rapidly increasing carbon dioxide levels in the atmosphere. Many scientists credit Keeling's graph with first bringing the world's attention to the effects that human activity was having on the Earth's atmosphere and climate.[1]

Charles David Keeling, of the Scripps Institution of Oceanography at UC San Diego, was the first person to make frequent regular measurements of the atmospheric carbon dioxide (CO2) concentration, taking readings at the South Pole and in Hawaii from 1958 onwards.[2]

Prior to Keeling, the concentration of carbon dioxide in the atmosphere was thought to be affected by constant variability. Keeling had perfected the measurement techniques and observed strong diurnal behaviour with steady values of about 310 ppm in the afternoon at three locations: (Big Sur near Monterey, the rain forests of Olympic Peninsula and high mountain forests in Arizona).[3] By measuring the ratio of two isotopes of carbon, Keeling attributed the diurnal change to respiration from local plants and soils, with afternoon values representative of the "free atmosphere". By 1960, Keeling and his group established the measurement record that was long enough to see not just the diurnal and seasonal variations, but also a year-on-year increase that roughly matched the amount of fossil fuels burned per year. In the article that made him famous, Keeling observed, [a]t the South Pole the observed rate of increase is nearly that to be expected from the combustion of fossil fuel.[4]


Referrences:
1. Briggs, Helen (December 1, 2007). "50 years on: The Keeling Curve legacy". BBC News. http://news.bbc.co.uk/2/hi/science/nature/7120770.stm.
2. Rose Kahele (October/November 2007). "Behind the Inconvenient Truth". Hana Hou! vol. 10, No. 5. http://www.hanahou.com/pages/Mag ... &MagazineID=39.
3. The Early Keeling Curve. Scripps CO2 Program
4. C. D. Keeling, The Concentration and Isotopic Abundances of Carbon Dioxide in the Atmosphere, Tellus, 12, 200-203, 1960

有趣的是Keeling的儿子当然在哈佛大学研究氧气。这一家子真是厉害!
 楼主| zhoukuanbo 发表于 2010-12-2 11:24:08 | 显示全部楼层
呵呵,这么编辑一下果然好了,很多阿,谢谢站长
jlinwhoi 发表于 2010-12-2 12:06:30 | 显示全部楼层
Al Gore在他的片子里谈到他上过Keeling的课。Gore是在哈佛上Keeling的课,还是在Scripps?如在哈佛上的话,是老Keeling还是小Keeling教的?

Gore的片子总的来讲把他的观点讲清楚了。但他说“0”篇科学文章支持对方的观点其实是败笔。也许老百姓会被信服,但我们搞科学的都知道这么复杂的问题不可能没有不同的观点。有不同的观点其实是健康的。

无论全球变暖是否主要由人类引起的,Gore提倡节能、减少污染是件大好事。
 楼主| zhoukuanbo 发表于 2010-12-4 01:48:04 | 显示全部楼层
据说(此话没有考证),Keeling 能在Scripps一直研究大气中的CO2,是由于当时另外一位伟大的科学家Scripps的所长Roger Revelle的力挺(这是维基百科上对他的介绍http://en.wikipedia.org/wiki/Roger_Revelle),海洋学上有个“Revelle Factor”用来指示海洋吸收CO2的能力的就是以他的名字命名的。所以研究大气CO2的是Keeling是在Scripps,在哈佛的是小Keeling,据说小Keeling在哈佛捣腾他的一个测定大气中氧气的仪器,因为氧气在大气中属于Major Gas,由于化石的燃烧,大气中氧气浓度应该变小,但是由于基数太大,变小的量几乎微乎其微,因为必须要有一个高精度的氧气测定装置,据说他到毕业的时候都还只有几个数据。
wuzhenli 发表于 2010-12-7 22:11:27 | 显示全部楼层
气候变暖基本跟人类活动关系不大,co2的增多是变暖的结果而不是原因,这是郎咸平的调研结果
跑题了,推荐看看郎的书
 楼主| zhoukuanbo 发表于 2010-12-8 11:16:18 | 显示全部楼层
回复 5# wuzhenli

是应该看看经济学家们对气候变迁的看法。但是,朗毕竟不是做气候科学或者做海洋科学的。我比较讨厌这些名人老是对自己专业以外的东西乱下结论。这样引起的社会效应也会很大。
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