If everyone on Earth sat in the ocean at once, how much would sea level rise?

The Conversation ^ | 31/3/21 | Tony E. Wong

[Eleutheria5]

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Scaling up You can think about the oceans as a gigantic bathtub. More than 70% of the Earth’s surface is ocean, giving this bathtub an area of about 140 million square miles. To figure out how much the water will rise, we need to know the volume of people sitting in it and divide it by this ocean area.

Currently, there are almost 8 billion people on Earth. Human beings come in all sizes, from tiny babies to large adults. Let’s assume the average size is 5 feet tall – a bit bigger than a child – with an average volume of 10 cubic feet. Only half of each person’s body would be submerged when they sit down, so only 5 cubic feet adds to the water level. With 8 billion people total, you can calculate 5 x 8 billion which gives a whopping 40 billion cubic feet that would be added to the oceans.

But remember, this volume would be spread over the vast area of the oceans. Using the same bathtub math as before, we divide the 40 billion cubic feet of volume over the 140 million square miles of ocean.

The answer? The total rise in sea level would be about 0.00012 of an inch, or less than 1/1000th of an inch. If everyone completely submerged themselves, this would double the answer to 0.00024 inches, which is still only about the width of a human hair.

It turns out the oceans are enormous – and humans are just a drop in the bucket.

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[Eleutheria5]

But what if all those eight billion people had a really big lunch and farted in unison? Would this cause an outbreak of tsunamis and global warming, tearing the planet apart? Jor El warned Krypton of this, and they laughed at him, heading for the burrito stands on the beach. Luckily, he launched the rocket with his son Kal El into the void before the Kryptonians took his dare. You should be careful what you say to a Kryptonian, and don't export Mexican food to other planets. Next thing you know, you'll have a super powered busybody with bad fashion sense flying around saving people from themselves.

[Truthoverpower]

A better question which I’ve always asked to global warming nut balls is the following

If all the above sea level ice on planet earth melted how much would that raise the ocean sea levels?

Now mind you the north and south poles average about -22-50°C so it’s never gonna happen

But the answer will surprise you

[Rurudyne]

The Fartocalypse is upon us!

[Eleutheria5]

Wait until they get the cows involved!

[rktman]

Ummmm....200 feet? And, “Now mind you the north and south poles average about -22-50°C so it’s never gonna happen” You’ll be getting a call from grrrreta or manbearpig shortly. :-)

[mfish13]

The North pole is irrelevant. If it completely melts, there would be zero change in the water levels.

[Eleutheria5]

But what if BLM grabs a bunch of battery-operated hair dryers and heads to the North and South poles? Will they have their revenge on the white devils at last? Or will they discover that there’s no place to recharge a battery in the polar regions?

[Phlap]

On what side of the IDL would everyone be? With out that information, how could we know?

[EvilCapitalist]

Have these people factored in Michael Moore? That fat ass would cause the oceans to rise exponentially all by himself.

[bhl]

Google says the seas would rise approximately 70 meters if all the ice melted. Is that your conclusion?

[central_va]

The North pole is irrelevant. If it completely melts, there would be zero change in the water levels.

True, but if the ice on Greenland were to melt a significant rise in the ocean level would follow.

[Yo-Yo]

A better question which I’ve always asked to global warming nut balls is the following

If all the above sea level ice on planet earth melted how much would that raise the ocean sea levels?

Now mind you the north and south poles average about -22-50°C so it’s never gonna happen

But the answer will surprise you

According to National Geographic, if all ice on Earth melted, this would be the resultant map:

However, remember that all of the ice at the North Pole is floating, so if the North Pole melts, there would be no change in sea level. Ditto for much of the ice at the South Pole.

It's areas like Greenland and mountain glaciers that would contribute to sea level rise.

[Eleutheria5]

Will Moore be sliding in slowly and carefully, or taking a running leap? If the latter, will it be high tide or low tide where he jumps?

[Eleutheria5]

You could get a bunch of construction workers to build dykes at low tide, and stave this off.

[Rurudyne]

Random aside:

It has been speculated that the reason the big sauropods could grow so large is that they had fermentation based digestion to help them digest low quality and rough food. Fermentation benefits from economies of scale, the larger the vat, or in this case the stomach, the more efficient the system.

So a large, efficient stomach gives large critters an advantage.

Now, cows, that you mentioned, are no where near the size of a sauropod and yet we’ve got cows that can sustain a flame ... so imagine what the dinosaurs were like?

In Jurassic park they had to be shown the dinosaurs when they first came into the park, but a more accurate version would have them smelling them long before they came into view.

[Eleutheria5]

There’d be a great big Zoom party, and everyone everywhere would say a-1 a-2 a-3 a-GOOOO! in unison and then jump. It will be horrible.

[Daffynition]

Answer: the same thing that would happen if all 350 million toilets in the United States were flushed at the same time?

[Eleutheria5]

Cows don’t fart, but at this point, what difference does it make?

[Rurudyne]

Angry lesbians defending our shores? /runsaway

[Eleutheria5]

Americans, nothing. India and China are the ones we have to worry about for synchronized flushing.