NASA | Earth Science Week: Melting Ice, Rising Seas

[Galv140577]

Fact is if you actually go look at sea levels you'll find it's gone down recently. So has the global temperature. Of course these parametres change all the time naturally so it depends wether you measure from a time when it was higher or a time when it was lower.

[Galv140577]

Ice is less dense than water. Ice floats, the volume of frozen water (ice) per gram is considerably greater than the volume of liquid water per gram. If the ice caps melted the volume of the frozen water would decrease considerably as it became liquid. The sea levels would actually fall not rise. Global warming is NOT a threat & even if it was it wouldn't be entirely man-made, about 3% of it would be. Increased CO2 is crucial for a growing population's crop needs. Carbon tax = depopulation.

[IamMarkusF]

watch v = aOCqHRpQh88

[IamMarkusF]

so ... take a plastic cup ... but some ice cubes in it and fill it with water ... and see what happens :o)

and then explain me why the ocean should rise :o)

[NotoriousEcho]

@IamMarkusF Because this ice is on land, and if you have a cup of water and then put ice cubes in it, it will rise

[Galv140577]

@NotoriousEcho Take the weight off the land & you get "post-glacial-rebound" where the land rises up & the weight of the extra water off land pushes the ocean floor down. sea level doesn't rise. Try again.

[MsLozeh]

his voice just sounds so... unatural....

[skeight976]

POW & SOS = Protect Our Winters & Save Our Snow

[richardramirezz]

I saw those image in Google Earth before! I didn´t know!!!!!

[cruxan007]

if it weren't for global dimming the sea level would be rising faster.

[chickenmanokout]

yeah...

everything expands when heated.

agreed with that...

[FunkMan53]

1:01 Optimist!

[thebottlemusician]

we know that earth is coming upon a heating period like all other inner planets all planets steadily heat/cool periodically yet here is the thing The earth is heating up EXTREMELY fast and thats just compared to earths norm in fact compared to any planets even mercury has a more predictable climate of sorts

[timmylee36]

yes well bapabob antarctica is miles above sea level aswell as below it so it will still increase global sea levels but i don't think it will rise a much as 70 metres, mabe by 30 feet or so.

[TRUMPHENT]

@timmylee36 You should look up the Bentley Subglacial Trench. In one spot, it's 8,233 ft below sea level and is solid ice down to the bedrock. This is in an area the size of Mexico that is all below sea level.

[bapabob]

Ocean level does not rise when ice shelves melt. Simple grade school science here people. When ice melts, it takes up less volume than in its frozen state. Ice melting would decrease ocean volume, not increase it.

[Res0lut1on]

Hmm...

[ImmortalUniverse]

is it a dumb idea to think we humans are Not responsible for global warming at all .

because on other planets there is also global warming .

even on mars

so im thinking .

maybe just a dumb idea but .

the SUN is getting gloser or bigger or intenser in heat .

you pick one

[Atoyota]

Coal ash is has a constant affect on ice melt.

Warming trends are due to excess energy due to our increasing energy appetite and compounded by our developing sprawl and destruction of ecosystems which both contain and manage energy and CO2. (CO2 displacement)

CO2 is a symptom, but not a causal affect of warming trends. Development, agribusiness, and energy use are the cause as it is more than can be dissipated even with normal CO2 levels.

remove CO2 and we'd still have a problem.

[zutroy1]

Ugh, as an Earth Sciences Major who is taking a course in Oceanography right now, it bothers me to hear him say that we are "definitely" causing it.

I'm not trying to deny anthropogenic climate change but please, given the multitude of factors and the limitations of our ability to quantify all the factors, we are not "definitely" causing it.

It is however the conclusion which the best evidence to date points towards. In science that is not definitive.

[zutroy1]

Either way, great video again by NASA, I just was not fond of the Oceanographer's terminology.

[azngreenteas]

@zutroy1 he works for NASA. he has more credibility. u dont

[gato123452]

@zutroy1 call me stupid but can you explain that again. i'm sorry i didn't get you.

[hyhhy]

I like the "no doom and gloom scenarios" attitude to global warming. I have the same view. Environmental changes always have caused and always will cause suffering to life (that means all species including humans), but I believe that "life will find a way", as it has for thousands and millions and billions of years.

[veers0r]

yeah.. well, I personally prefer not to play extinction.

[7othestars]

climatic changes have always caused problems to life, but the question is not whether life will survive, but whether our civilization will survive or not. I am hopeful that it will, but the possibility exists that our civilization my erode due to the indirect effects of global warming.

[hyhhy]

Yeah, I agree with you that it would be a good thing if civilization didn't collapse. My point was just something like "humanity will probably take some hits, but it's unlikely to kill us off completely, and even if it's going to, it's probably not useful to panic about it". I did mean human civilization too when I said "life" will find a way.

Besides that, I am personally not even very afraid of dying, even though I prefer living at the moment.

[yourmovieworld]

why not build under water than sorry waterworld???

[Zimph01]

Perhaps, maybe it is not JUST global warming contributing to this, but since all things gravity are lead towards the greatest gravitational pull, then perhaps we are getting closer to the sun slowly so maybe global warmnig is just a small factor contributing to it.... not such a big pandemic as people think

[Tartrus1]

No. That is all I have to say.

[gordon1201]

Gravity making the ice melt? nice one..

[Zimph01]

no getting closer to the sun MIGHT be :P

[LaotianPride14]

Watching was worth it

[Atoyota]

They are by burning coal... coal ash deposits on ice help melt the ice and this will continue despite a current cooling trend (extended solar minimum) because black absorbs heat (coal ash is generally black), and melts ice..

Thanks but this is all elementary.

Remember... CO2 is the symptom... not the cure.

[Erik0219]

Worth Watching....

[crimsoncoin]

Well worth watching...