Subject: Re : Planetary temperature Date: Fri, 8 Mar 2002 15:23:26 -0800 To: RichardLindzen From: Bob Armstrong Dear Dr Lindzen , This follows up the inquiry I sent back on Feb 19 asking for some link to the equations determining the temperature of radiantly heated spheres . I see there are indications that Mars is growing warmer in concert with Earth , which , of course , is necessarily true if it is the sun's radiance and the distance from it which is the sole determinant of a planet's mean temperature . To state my question in another form , what is the " null hypothesis " mean temperature of a planet ? This should be a rather simple equation which I figure I could work out myself , but I would much rather be directed to standard literature . I would expect it to be clear in such an equation how the spectral reflectivity or other parameters relating to insulative properties of the planet changes its asymptotic temperature , if they do . I really would appreciate a response to this question because you appear to be one of the few objective and analytic enough to provide a meaningful answer . Thanks again , -- =A0Bob Armstrong -- http://CoSy.com -- 212-285-1864 http://CoSy.com/K/CoSy.htm : A World Ultimate http://CoSy.com/Homes : Building Affordable Homes in NYC =A0 =A0 =A0=A0=A0=A0=A0=A02002/03/08 2:51:50 PM -- >From: Bob Armstrong >Subject: How can ants change the temperature of their sphere ? >Date: Tue, 19 Feb 2002 10:56:41 -0800 >To: RichardLindzen > >Dear Dr Lindzen , > >I just read your note on =A0http://lomberg.org =A0in reply to >the apparently sadly bias Scientific American article >following links from Victor Niederhoffer's Libertarian >Junto here in NYC . > >I've addressed this note to you because you are just up >the road in Boston , and Lomberg has no email address >on his site . > >Frankly , I fail to understand how any change in albedo >or insulative properties can change the mean temperature >of a radiantly heated sphere -- at all . >Only direct creation of heat can change its equilibrium >with its surroundings . > >It should be simple to point out how I am misunderstanding >what I find now is called "the 0th law of thermodynamics" >if I am . > >I would appreciate any links to enlightenment on this >subject . > >The link to my own thoughts on this , is : >=A0C:\CoSy\views\warm.htm . > >Thank you for your insights , > >-- >=A0Bob Armstrong -- http://CoSy.com -- 212-285-1864 >http://CoSy.com/K/CoSy.htm : Rapid Quantitative Modeling >http://CoSy.com/Homes : Building Affordable Homes in NYC >=A0=A0=A02002/02/19 10:26:48 AM