Changes

===Disproving the greenhouse effect===

===Disproving the greenhouse effect===

Finally performing the experiment Fourier had recommended a century earlier, Robert Wood showed in 1909 that energy is transferred from the Earth's surface to the atmosphere primarily through convection currents. In Wood's experiment, the temperature in a glass box was compared to that in a box with a top made of halite (rock salt). Halite allows sunlight to enter, but blocks infrared. Infrared re-radiation and the greenhouse effect play "a very small part," both in the atmosphere and in literal greenhouses, Wood concluded.<ref>Wood, Robert, "[http://www.tech-know-group.com/papers/Note_on_the_Theory_of_the_Greenhouse.pdf Note on the Theory of the Greenhouse]", ''Philosphical Magazine'', January—June 1909.<br/>"[http://hockeyschtick.blogspot.jp/2010/06/greenhouse-theory-disproven-in-1909.html Greenhouse Theory disproven in 1909, 1963, 1966, 1973...but still refuses to die]," June 28, 2010.<br/>Gerhard Gerlich and Ralf D. Tscheuschner, "[https://arxiv.org/PS_cache/arxiv/pdf/0707/0707.1161v4.pdf Falsification Of The Atmospheric CO₂ Greenhouse Effects Within The Frame Of Physics]"</ref> A greenhouse is warmer because the roof limits convection and the walls restrict wind. "The acquired heat is concentrated, because it is not dissipated immediately by renewing the air," as Fourier himself explained.<ref name="Fourier" />

Finally performing the experiment Fourier had recommended a century earlier, Robert Wood showed in 1909 that energy is transferred from the Earth's surface to the atmosphere primarily through convection currents. In Wood's experiment, the temperature in a glass box was compared to that in a box with a top made of halite (rock salt). Halite allows sunlight to enter, but blocks infrared. Infrared re-radiation and the greenhouse effect play "a very small part," both in the atmosphere and in literal greenhouses, Wood concluded.<ref>Wood, Robert, "[http://www.tech-know-group.com/papers/Note_on_the_Theory_of_the_Greenhouse.pdf Note on the Theory of the Greenhouse]", ''Philosphical Magazine'', January—June 1909.<br/>"[http://hockeyschtick.blogspot.jp/2010/06/greenhouse-theory-disproven-in-1909.html Greenhouse Theory disproven in 1909, 1963, 1966, 1973...but still refuses to die]," June 28, 2010.<br/>Gerhard Gerlich and Ralf D. Tscheuschner, "[https://arxiv.org/PS_cache/arxiv/pdf/0707/0707.1161v4.pdf Falsification Of The Atmospheric CO₂ Greenhouse Effects Within The Frame Of Physics]"</ref> A greenhouse is warmer than the air outside because the roof limits convection and the walls restrict wind. "The acquired heat is concentrated, because it is not dissipated immediately by renewing the air," as Fourier himself explained.<ref name="Fourier" />

From 1909 until the 1960s, only a few additional papers on AGW were published. Research went forward as the lonely project of English scientist Guy Callendar. Callendar collected historical temperature readings and CO₂ measurements and published the results in 1938.<ref>Callendar, G.S. (1938). "The Artificial Production of Carbon Dioxide and Its Influence on Climate." ''Quarterly J. Royal Meteorological Society'' 64: 223-40. Reprinted in ''The Warming Papers'', pp. 261-273.</ref>

From 1909 until the 1960s, only a few additional papers on AGW were published. Research went forward as the lonely project of English scientist Guy Callendar. Callendar collected historical temperature readings and CO₂ measurements and published the results in 1938.<ref>Callendar, G.S. (1938). "The Artificial Production of Carbon Dioxide and Its Influence on Climate." ''Quarterly J. Royal Meteorological Society'' 64: 223-40. Reprinted in ''The Warming Papers'', pp. 261-273.</ref>