Tag Archives: Carbon dioxide in Earth’s atmosphere

Remind me again why the west needs a carbon tax?

Man-made CO2 emissions 1965 -2012 Guest Essay by Ed Hoskins The following calculations and graphics are based on information on worldwide national CO2 emission levels published by BP [i] in June 2013 for the period from 1965 up until 2012. … Continue reading

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Posted in Carbon dioxide, carbon tax | Tagged , , , , , , , | 78 Comments

CO2 Residence Times, Take Two

Guest essay by Joe Born In a recent post Christopher Monckton identified me as a proponent of the following proposition: The observed decay of bomb-generated atmospheric-carbon-14 concentration does not tell us how fast elevated atmospheric carbon-dioxide levels would subside if … Continue reading

Posted in Carbon dioxide | Tagged , | 209 Comments

US Carbon Dioxide Emissions – down by source

I’ve often said my email is like a fire hose. Here’s an example of something that got lost in the stream and I didn’t find it until last night while looking for another email. Zeke Hausfather writes (In August 2012): … Continue reading

Posted in Carbon dioxide, carbon tax | Tagged , , , , , , , | 42 Comments

China’s “Emission Cuts” Not What They Seem

By Paul Homewood http://europe.chinadaily.com.cn/business/2013-11/21/content_17120968.htm “and make sure that the commitment of reducing CO2 emission per unit of GDP by 40-45% by 2020 from 2005 level is fulfilled” We often hear claims that China are moving much faster than the West … Continue reading

Posted in Climate News | Tagged , , , , , , , | 82 Comments

Excerpts from Salby’s Slide Show

UPDATED – see below Monckton provides these slides for discussion along with commentary related to his recent post on CO2 residence time – Anthony There is about one molecule of 13C in every 100 molecules of CO2, the great majority … Continue reading

Posted in Uncategorized | Tagged , | 320 Comments

Warmism: Credible Politics, Incredible Science

Guest essay by Paul Murphy Here’s Wikipedia’s simplified but canonical description of the greenhouse effect:   The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in … Continue reading

Posted in Alarmism, Global warming | Tagged , , | 102 Comments

Study: The Late Cretaceous Period was likely ice-free

From the University of Missouri-Columbia COLUMBIA, Mo. – For years, scientists have thought that a continental ice sheet formed during the Late Cretaceous Period more than 90 million years ago when the climate was much warmer than it is today. … Continue reading

Posted in Paleoclimatology, Sea ice | Tagged , , , , , , , | 118 Comments

Earth’s self regulation of Carbon Dioxide is remarkably stable

From CSIRO: “What we learned is that in spite of droughts, floods, volcano eruptions, El Niño and other events, the Earth system has been remarkably consistent in regulating the inter-annual variations in atmospheric carbon dioxide levels,” Tropical ecosystems regulate variations … Continue reading

Posted in Carbon dioxide, Earth | Tagged , , | 72 Comments

An Evidence-Based Approach To Pricing CO2 Emissions

PRESS RELEASE New Paper Proposes Cost-Effective Climate Policy That Gets Around Key Scientific Uncertainties London: A new paper, published today by the Global Warming Policy Foundation, proposes a radical new climate policy approach that offers to be the most cost-effective … Continue reading

Posted in carbon tax | Tagged , , , , , , , | 104 Comments

The bombtest curve and its implications for atmospheric carbon dioxide residency time

Studies of Carbon 14 in the atmosphere emitted by nuclear tests indicate that the Bern model used by the IPCC is inconsistent with virtually all reported experimental results. Guest essay by Gösta Pettersson The Keeling curve establishes that the atmospheric … Continue reading

Posted in Carbon dioxide, IPCC | Tagged , , , , | 519 Comments

Dr. Vincent Gray on historical carbon dioxide levels

NZCLIMATE TRUTH NEWSLETTER NO 312 JUNE 4th 2013 CARBON DIOXIDE There are two gases in the earth’s atmosphere without which living organisms could not exist. Oxygen is the most abundant, 21% by volume, but without carbon dioxide, which is currently … Continue reading

Posted in Carbon dioxide | Tagged , , , , , , , | 115 Comments

AGU says CO2 is plant food

Elevated carbon dioxide making arid regions greener 31 May 2013 AGU Release No. 13-24 WASHINGTON, DC—Scientists have long suspected that a flourishing of green foliage around the globe, observed since the early 1980s in satellite data, springs at least in … Continue reading

Posted in Biomass | Tagged , , , , , , , | 64 Comments

The 400 PPM FUD Factory: T-shirts now available

Steve Milloy at JunkScience points out what is above the fold in the NYT today – FUD Fear, Uncertainty, Doubt Here’s his scan of the front page at right: Readers may recall my post What 400 ppm of CO2 in … Continue reading

Posted in Climate News, Fun_stuff | Tagged , , | 114 Comments

WSJ op-ed by Schmitt and Happer: In Defense of Carbon Dioxide

 ‘The incredible list of supposed horrors that increasing carbon dioxide will bring the world is pure belief disguised as science’ – Dr. William Happer: The demonized chemical compound is a boon to plant life and has little correlation with global … Continue reading

Posted in Carbon dioxide, Opinion | Tagged , | 28 Comments

The curious case of rising CO2 and falling temperatures

Guest essay by Tony Brown Some readers might recall my recent article ‘The Long Slow Thaw?’ In this I reconstructed Central England temperature to 1538 from its current instrumental date of 1659. I was surprised by two notable periods of … Continue reading

Posted in Uncategorized | Tagged , , , , , | 140 Comments

The effectiveness of CO2 as a greenhouse gas becomes ever more marginal with greater concentration

The political target of limiting the effect of Man-made global warming to only +2⁰C can never be attained. Guest essay by Ed Hoskins According to well understood physical parameters, the effectiveness of CO2 as a greenhouse gas diminishes logarithmically with … Continue reading

Posted in Carbon dioxide, IPCC | Tagged , , , , , , , | 155 Comments

Good news! Elevated CO2 may extend interglacial, prevent next ice age

Reader “Markx” writes in Tips and Notes on a paper I hadn’t noticed before (because it was published before WUWT was born). Of course it only works if CO2 has a long residence time and/or our elevated emission levels continue. … Continue reading

Posted in Carbon dioxide, Positive effects of CO2 | Tagged , , | 110 Comments

USA meets Kyoto protocol goal – without ever embracing it

New EIA data shows USA inadvertently meets 1997 Kyoto protocol CO2 emission reductions without ever signing on thanks to a stagnant economy. Lowest level of CO2 emissions since 1994. In 2012, a surprising twist and without ever ratifying it, the … Continue reading

Posted in Carbon dioxide, Politics | Tagged , , , | 83 Comments