Re: Ocean Level Rising

Hi James, Actually, even if you can assume the earth is a sphere, you have your geometry wrong. You're correct that the volume of a sphere goes as the radius cubed: V = 4/3 * pi * r^3 however, you may remember from calculus that to calculate the change in volume as a function of radius, you mu

report your spring phenological observations

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Re: Ocean Level Rising

Dear James, I got your email. And I decided to ponder your words while I took a break from my studies, as I often do in the afternoon. I felt like sharing my thoughts with you and the entire list. 1. The ocean level is unchanged when floating ice melts. I am a biologist. I got by in chemistr

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Re: Ocean Level Rising

The first is generally true for floating ice. The second one is obviously wrong. What is your ocean radius? We can calculate step by step in this way. The earth's radius is 6,356.750 - 6,378.135 km. That's about 20.9 million feet. ((1+20,900,000) / 20,900,000) ^ 3 = 1.00144 --- A 1-foot

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Re: Ocean Level Rising

"1. The ocean level is unchanged when floating ice melts." But if that floating ice originated on land, like pieces of the Greenland or Antarctic ice shelves, then the sea level would go up when that ice was added to the ocean (and eventually melted). In addition, melting glaciers and continen

Re: Ocean Level Rising

This would be very reassuring if it were not based on bad science and worse math. 1. The ice of concern is not floating. It is mostly on the Greenland and Antarctic land masses, where it is flowing down to sea. It is the ice that falls into the sea that causes sea level rise, but then as it mel

Re: Ocean Level Rising

More inconvenient facts: During periods of extensive glaciation sea levels are consistently lower. During periods when glacial cover is lowest sea levels are consistently higher. These patterns can be simply proven using the fossil record. Now I'm not a meteorologist, a climate scientist or ev

Re: Ocean Level Rising

These "facts" seem inconvenient until one considers a few facts: No one expects any sea-level rise from melting sea ice. Melting ice caps over land, however, are a different critter altogether. No competent scientist can dispute the fact that expansion and contraction of ice sheets have had a dra

Re: Ocean Level Rising

I know you're a troll, and that I'm not an oceanographer, but: 1. Exactly how is this fact "inconvenient"? Even I know that most ice sheets rest on land, not water. 2. Basic geometry: the 8000x change (from a 1- to 20-foot increase) is only true if you're starting with a circle of radius 0. F

Re: Ocean Level Rising

Hi James, While I think that your first point is essentially true, the second point assumes that the whole of the earth is covered with water, when only 2/3 of the earth's surface is water. Further, most of the ice locked up in the arctic and antarctic ice caps sits above sea level. Thus, as

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Ocean Level Rising

Inconvenient Facts regarding rising ocean level: 1. The ocean level is unchanged when floating ice melts. 2. The ocean is a spherical body of water. The ocean volume varies as the cube of the ocean radius. Therefore, for the ocean radius to increase 20 feet, the ocean volume must increase

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Re: satellite imagines

Natalia, There you go, a few resources for your search.I hope those links works out well. Some of these are SAT data for free or with fee, but again it depends what specifically you want. http://gcmd.nasa.gov/ http://gcmd.nasa.gov/KeywordSearch/Home.do?Portal=gofc&MetadataType=0 http://www.echo.n

Re: Consumer Choice & the Environment

That may be a different book because this one very clearly goes into a pretty explicit discussion of how concerned citizens worry way too much about choices that make a very insignificant difference, and he talks about not feeling guilty about decisions like cloth vs disposable diapers and using pa

Re: Consumer Choice & the Environment

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