Science/Technology

Venus’ surface temperature series updated

Venus terrain composite (NASA)

Venus terrain composite (NASA)

In early May, 2011 I posted a five-part series about the surface temperature of Venus. In it I demonstrated that the Venus’ surface temperature – hot enough to melt lead – was not a result of internal heating from Venus’ core. Instead, the greenhouse effect of Venus’ largely carbon dioxide atmosphere is the reason the surface is so much hotter than it would be without the atmosphere.

Unfortunately, I made a pretty significant error in my calculations and used the wrong value for a physical constant that made many of my calculations about 20% too high. While I acknowledged the error as soon as it was pointed out to me by an observant commenter, I had not taken the time to go back through all five posts and correct the calculations until last week. As I had pointed out as soon as my mistake was discovered, none of the conclusions changed as a result of the error, but I feel it’s important nonetheless to make admit mistakes and make corrections as required. I’m sorry it took so long to make the corrections.

Here are links to each of the Venus posts I made in one place. I hope you find them useful.

Venus’ climate I: How scientists know Venus’ surface is unusually hot (corrected)

Venus’ climate II: How scientists know Venus’ surface temperature isn’t from internal heating (Corrected)

Venus’ climate III: How scientists know Venus isn’t geologically young (Corrected)

Venus’ climate IV: How scientists know Venus’ surface temperature isn’t from a “recent” astronomical collision

Venus’ climate V: How scientists know Venus’ surface temperature is a result of greenhouse heating (corrected)

3 replies »

    • The main reason it took so long to do was that I lost my original calculation file and the Visio document I used to draw the figures for the fifth post when an old flash drive died. So I had to work up the energy to regenerate the calculations and the images, which is simply no fun. Still, at least I got this off my plate finally.

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