Search found 12 matches

by jluetjen
Sat Jul 18, 2015 12:58 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: 50 Miles on Pluto (2015 Jul 16)
Replies: 60
Views: 14736

Re: APOD: 50 Miles on Pluto (2015 Jul 16)

Ok, that would suggest even fewer craters than. Not to me, it doesn't. (Besides, I am sure the best current models for the varying rate of cratering throughout the solar system, consider many more factors.) Chris Peterson and Nitpicker; Since I'm just a layman who doesn't read (nor even have access...
by jluetjen
Fri Jul 17, 2015 1:35 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: 50 Miles on Pluto (2015 Jul 16)
Replies: 60
Views: 14736

Re: APOD: 50 Miles on Pluto (2015 Jul 16)

Actually, I was thinking the opposite. The age might be greater than that. My reasoning goes like this: 1) The above statement presumes that the crater creation rate would be the same across the solar system. Is this a good assumption? 2) My understanding is that the craters formed on the inner pla...
by jluetjen
Fri Jul 17, 2015 12:22 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: 50 Miles on Pluto (2015 Jul 16)
Replies: 60
Views: 14736

Re: APOD: 50 Miles on Pluto (2015 Jul 16)

Suggesting surprising geological activity, they are also likely young with an estimated age of 100 million years or so based on the apparent absence of craters. Actually, I think the estimate is for a maximum age of 100 million years, with no bounds yet on how much younger the surface might be (at ...
by jluetjen
Fri Apr 24, 2009 9:28 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: 2009 April 21 - global warming

jluetjen said... I don't care how complex or highly regarded the models or the scientist are -- if what they are saying defies common sense, I don't buy it. Many things that scientists say defy common sense. That's why they get the big bucks. :lol: If you disregard what scientists are saying, then ...
by jluetjen
Fri Apr 24, 2009 9:26 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: 2009 April 21 - global warming

I don't care how complex or highly regarded the models or the scientist are -- if what they are saying defies common sense, I don't buy it. Fine, just as long as you realize that this position is inherently irrational and unscientific. The Universe is full of things that really defy common sense: S...
by jluetjen
Fri Apr 24, 2009 6:24 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: 2009 April 21 - global warming

As I look back on this discussion, I noticed a significant choice of language on the AGW side.. ...and good climate models predict... ...the majority of climate scientists... ...is the output of a well regarded model... ...their output is the solution of a large number of equations that have physica...
by jluetjen
Fri Apr 24, 2009 12:10 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: 2009 April 21 - global warming

Interesting argument about the greenhouse, but it's missing the fundamental points... 1) Yes it seems to be the case that CO2 is higher when temperature is higher, and lower when temperature is lower. But that doesn't describe causality, but rather only suggests correlation. To put it differently, I...
by jluetjen
Tue Apr 21, 2009 9:14 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: Climate Change Facts

The amounts of greenhouse gases produced are not small. These have been measured and are known to have increased by 50%-150% over less than three hundred years, and most rapidly in the last hundred years. Chris, I guess you didn't read the data. In the past CO2 has been 100X higher then today (comp...
by jluetjen
Tue Apr 21, 2009 7:29 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: 2009 April 21 - global warming

hydroresearch wrote: Finally some science being reported. Whew!
Thanks. I'm just a salesman, but I do often stay at Holiday Inn Express when I travel.
by jluetjen
Tue Apr 21, 2009 5:04 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: 2009 April 21 - global warming

So if large scale changes in CO2 (5000 PPM or more down to 400 PPM) do not correlate with changes in temperature, how you can you argue that relatively small scale changes in CO2 -- say a 50% increase from 400 PPM to 600 PPM, is causing a short term increase in the global temperature?
by jluetjen
Tue Apr 21, 2009 4:00 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: 2009 April 21 - global warming

A rational person wouldn't be surprised by a trend returning towards average, but yet somehow Global Warming advocates extrapolate that this must indicate the hand of mankind on the climate. Basic statistics suggest that you can't extrapolate a meaningful trend based on a select 1/1,000,000th sampl...
by jluetjen
Tue Apr 21, 2009 12:22 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Global Warming Predictions (2009 April 21)
Replies: 621
Views: 68999

Re: 2009 April 21 - global warming

It's amazing how paradigms can pause blind spots... Compared to the past 100 million years, the Earth is currently enduring a relative cold spell, possibly about four degrees Celsius below average. Over the past 100 years, however, data indicate the average global temperature of the Earth has increa...