Channel: Simon Clark

Category: Science & Technology

Tags: simonoxfphyskelvincarbon dioxidedrsimonclarkvenuscarbongreenhouse effectsimonoxphysdr simon clarkgreenhouse gas

Description: Venus is a mere 460°C, but basic radiative physics says it should be much hotter... If this kind of video interests you, check out educational website and app Brilliant, and get 20% off at brilliant.org/simonclark In this video I look at why Venus is so cold, a paltry 460°C rather than the hundreds of thousands of degrees the greenhouse effect says it should be. With all that carbon dioxide in its atmosphere, and being so much closer to the Sun, why is Venus so cold? LINKS 1) This number comes from this paper, which is a really useful resource on Venus all round link.springer.com/article/10.1007/s11214-018-0525-2 2) Note this 0.0028K figure comes from 560K/200000 (that second figure being roughly the ratio of CO2 masses on Earth and Venus), which is incorrect because the greenhouse effect on Venus is around 580K, not 560K. As we see in the video though, this doesn't change any of our conclusions. 3) See e.g. skepticalscience.com/why-global-warming-can-accelerate.html 4) Figure taken from the ever-excellent Carbon Brief carbonbrief.org/explainer-how-scientists-estimate-climate-sensitivity You can support the channel by becoming a patron at patreon.com/simonoxfphys Check out my website! simonoxfphys.com ---------- II ---------- My twitter - twitter.com/simonoxfphys My facebook - facebook.com/youtubesimon My insta - instagram.com/simonoxfphys My goodreads - goodreads.com/simonoxfphys ---------- II ---------- Music by Epidemic Sound: epidemicsound.com Edited in part by Spencer Grant. This video uses radiative physics to establish the climate of Venus, talking about how carbon dioxide generates a greenhouse effect, similar to other greenhouse gases. Yet if we are to believe the greenhouse effect of greenhouse gases on Earth, Venus is observed to be too cold! Huge thanks to my supporters on Patreon: Thines Ganeshamoorthy, Ryan Bolton, Jerry Moore, Sam Harvey (soon to be PhD), Ashley Wilkins, Michael Parmenter, Samuel Baumgartner, ST0RMW1NG 1, Jan Galkowski, Adrian Sand, Morten Engsvang, Josh Schiager, Farsight101, Liam Margetts, K.L, poundedjam, Felix Freiberger, Robert Connell, Jaime Stark, Kolbrandr, , Sebastain Graf, Dan Nelson, Shane O'Brien, Alex, Fujia Li, Harry Eakins, Andrew Young, Cody VanZandt, Jesper Koed, Jonathan Craske, Albrecht Striffler, hennersfl, Jon Sjöberg, Igor Francetic, Jack Troup, SexyCaveman , James Munro, Oskar Hellström, Sean Richards, Kedar , Omar Miranda, Alastair Fortune, bitreign33 , Mat Allen, Anne Smith, Colin J. Brown, Princess Andromeda, Aron Kári Ágústsson, Leighton Mackenzie, BenDent , Thusto , Andy Hartley, Lachlan Woods, Tim Boxall, Dan Hanvey, Simon Donkers, Kodzo , James Bridges, Liam , Andrea De Mezzo, Wendover Productions, Kendra Johnson.