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One Piece Blue Planet Calc Revisions

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A guesstimate that has nonsensical results. The sooner you acknowledge that and stop proposing it as a solution to the 5 foot pile of problems we need to solve, the sooner we can move onto to better things.
Nonsensical results is up for interpretation though since we have two different calc members making their disagreements here with the results of King Tempest’s planetary parameters to say the least. I will just leave at agree to disagree here
 
Nonsensical results is up for interpretation though since we have two different calc members making their disagreements here with the results of King Tempest’s planetary parameters to say the least. I will just leave at agree to disagree here
This is not an agree to disagree moment. As I mentioned above, nobody has any contentions with Alabasta's size. Why are you so hell-bent on using this very obviously inconsistent calc?
 
This is not an agree to disagree moment. As I mentioned above, nobody has any contentions with Alabasta's size. Why are you so hell-bent on using this very obviously inconsistent calc?

Whether or not other verses have similar issues is irrelevant, two wrongs don’t make a right. Toriko actually weakens your comparison rather than supporting it, because in that case the author explicitly established the planet is bigger and chose to ignore the physical implications, that’s a conscious authorial decision. Oda never said anything about the One Piece planet’s size in numbers, so you don’t even have that justification here. The size comes entirely from a third party calc he never acknowledged.

The point still stands regardless of what the size is being used for. If you’re using the planet’s physical size as the basis for calculating feats, you’re appealing to real physics to get your numbers. You can’t selectively apply physics when it produces useful results and then dismiss it when the same physics produces inconvenient implications like the gravity, pressure and composition issues. That’s internally inconsistent.
 
What point are you trying to make by quoting m3x?
If the planetary parameters is in contention which the OP is clearly doing here, it means there are issues with the width estimates of Grand Line and Alabasta as well since it came along with King Tempest’s fanmade calculations on the planetary parameters calculation of the planet.

I am also pretty sure Damage also have contentions with the current planet parameters calculations as it is.

We can’t selectively exclude the Alabasta’s and Grand Line’s guesstimate from the equation since it is a part of the calculations made by King Tempest on his blog.

Hell, I am pretty sure OP seems to have contentions with all guesstimates it seems
 
Dude.

There is no issues with Alabasta's size.
If you calc the grand line to be smaller than Alabasta then we have a problem.

Damage's contentions are not the end all be all.

Same with the OP. The OP's arguments have been debunked so much to where then Floxy asked for a summary of the reasons they didn't even give any they just responded to Kachon's
 
The opening post isn't very long; I don't see how they could summarize it much more than what's there.
 
This gonna be 10+ pages of pointless yap soon, isn't.
You guys have 1000+ manga chapters(+anime episodes to use for timeframes) to go off.
Formulate new methods to calculate size of Blue, try to find more inverse contractions against currently used size. Create blogs based on them.
I will personally wait for Floxy horizon recalc (and read some more about refraction in the meantime)
 
This gonna be 10+ pages of pointless yap soon, isn't.
You guys have 1000+ manga chapters(+anime episodes to use for timeframes) to go off.
Formulate new methods to calculate size of Blue, try to find more inverse contractions against currently used size. Create blogs based on them.
We have
And people sit and complain about each and every one of them

Our method is flawless and people find problems

This is not the first time it was attempted to calc the planet.

The OP came here and complained and said "maps don't have middles" and "maybe the island in the middle of the sea is on the far side of the grand line" as a debunk and everyone who said "yeayyyy no more big planet" fell in line
I will personally wait for Floxy horizon recalc (and read some more about refraction in the meantime)
If Floxy's calc is objectively contradicting then it will be put to the side
If not, then it won't
 
I'll just drop one last response post since I started writing this long ago and because there are some things I wanted to add/address but other than that I will just wait for CGMs to come and evaluate.

First point:
In One Piece, each island has a distinct climate zone that extends hundreds of kilometers beyond the landmass and into the surrounding ocean. These zones have stable, consistent weather, such as winter or spring depending on the island. Outside of these climate zones are the waters of the Grand Line that are highly turbulent and characterized by chaotic weather. This is a consistent part One Piece's world that Oda has made sure to include whenever the crew traverses between locations.

The reason this is brought up is because in the current calc of planet, the height of the top-left panel of this page is used as a lowball estimate for the width of the Grand Line. The main argument in the OP is that there is no way to determine whether other islands are present in that panel since Alabasta is extremely large with a diameter of 5000 kilometers, meaning smaller islands would not be visible in the birds-eye-view.

The counter to that point is that the closest confirmed island to Alabasta, Drum Island, has a large and visually distinct winter climate zone. Even if Drum Island’s landmass were too small to be directly visible at that scale, its surrounding climate zone would. The unstable weather patterns of the Grand Line between Alabasta and Drum Island should also be visible, as it's consistently depicted as having a stark contrast to stable climate zones.
The climate surrounding Drum Island isn't anything special that could be viewed from that altitude, the area around it is showcased as having calm and clear weather (That's how clear weather is portrayed in early volumes) so the area surrounding the island doesn't have anything that clearly indicates it. As for the area between Alabasta and Drum Island, the instability of the weather refers to how the weather switches quickly and randomly in this example going from calm to stormy suddenly with no clear indication and then the next day it becomes snowy, so because the weather just keeps changing depending randomly and unexpectedly based on time and location don't expect to see a massive storm visible from that altitude or anything of that kind that spans the whole area between Alabasta and Drum. Also, if we're expecting to find an indication of stormy or rainy weather from that altitude that doesn't work considering the moment we get the aerial view of Alabasta is when the rain starts to fall over all of Alabasta yet we don't see any indications of that weather in Alabasta from the aerial POV.
The results of that calc are nonsensical as it demands for Alabasta's diameter being the same as the Grand Line's width.
That's fair enough, although I do believe it can be used as a low ball if the current method got removed considering it doesn't contradict the fact that Alabasta being located within the Grand Line with us not knowing how much of the Grand Line's width it takes. I would wait for Floxy's calc though.

As for Alabasta's size I don't have any contentions although I want to point out that it's size can range from 7955km to 3977.5km depending on the part of the river you are using for pixel scaling since they range from 2px to 4px which would make the width of the Grand Line in this calc less inconsistent. (We do have islands that take a massive portion of the planet in the Oharan model of the planet although these islands are most likely outside of the Grand Line and there's this map in chapter 101, which is probably the closest we have to an actual map of the Grand Line with islands being visible in the manga, showing that islands vary a lot in size and can take up a large portion of the Grand Line.)
If it truly was Oda's intention to have the grandline be that small, he would've illustrated the Calm Belt in some and I mean any way at all. Yet, he doesn't.
How? He draws the Calm belt like he does with any other sea.
 
I don't see how an argument based on a lack of evidence is supposed to stand. This is the panel being used as evidence.

Do we see Drum island in the panel? No.

Do we see any indication of the Calm Belt; smaller waves, sea kings, etc? No.

Do we see any other island in the panel? No.

The entire argument is just "Well, we do not not see it, therefore it's there.". "It could be there, we just don't know" isn't an argument.
 
The issue is there are more reasons for this than just "Therefore it must be off-panel".
What issues? The clouds? Is Drum Island conveniently in the area that's covered? Or the climate zone? Even if the climate zone of Drum lacked snow outside of the island, how does that prove its proximity to Alabasta?

Really? Sea Kings, visible from that altitude?
Sea Kings that are similar to islands in size? Yes.
 
What issues? The clouds? Is Drum Island conveniently in the area that's covered? Or the climate zone? Even if the climate zone of Drum lacked snow outside of the island, how does that prove its proximity to Alabasta?
Yes; clouds block significant portions of the sea. There are millions of square kilometers of area that are obscured. And we don't know how clearly visible these climate zones would be from above. It seems like some people are arguing there would be a clearly visible border where one zones transitions into the next.

Sea Kings that are similar to islands in size? Yes.
Most of the Sea Kings we've seen are a several kilometers long, with the general length given for a Sea King being 5 km long.

Based on the scale of the current pixelscaling of that image, a Sea King would need to be hundreds of kilometers long just to show up as a single pixel. And that's if there's any at the surface at the time and not just under the water.
 
I'm not familiar with One Piece so can I get a summary of the issue specifically?
 
So, can't say much about canonity part as that's not my field of expertise here, but perspective makes it questionable for measuring off planet. Iirc someone has mentioned in the thread that there's a model or something, I'd prefer if we measured where perspective wouldn't be a problem since moon in that panel could easily be closer to POV.

Since ship travel speed stuff is consistently inconsistent in the series I don't think that it's a good reason to discard calc because of that.

OP is right that climate range needs to be proven, for example if it extends to a hundred kilometer it won't even correspond to one single pixel of the panel at that distance. At such big scale it's expected that we won't see them.

As for horizon method, I find it more or less reliable as we mostly work with direct statements. As for arguments regarding apparent horizon, terminal velocity, etc. I think that while it'll be a problem for supporters to have feats where they need variables they can't realistically get, same goes when we're talking about them being needed for counter arguments. Supporters aren't obliged to find terminal velocity for example (Ik it's not main argument or anything, but I'm just giving an example), they can just say "it's just unknown to us for such a different planet so if you think it's contradicting, calculate it yourself prove that it contradicts current version of calc".

Currently I have no idea how that'll work for Alabasta so I'll just comment on math part of calc.

So we know that river is 50km wide, and we know that bank from the other side can be seen via a direct statement. If it can be seen from H1 meters above sea level, bank's height is H2 meters above sea level and distance to the bank is 50 km in an arc:

50000 = R * (arccos[R/(R+H1)] + arccos[R/(R+H2)]) where arccos gives us value in radians.

H2 is 2.27 m and H1 is 1.551 m (I doubt that it's 1.5 meters above sea level but for now I'll just tackle math part), I tried in Wolfram Alpha and some other calculators but they can't solve the equation unless H1 and H2 are equal but since H is very small compared to R, using Taylor series gives me around 165k km radius. It makes grand line 5x size of Alabasta's diameter but idk if it's a contradiction or not.
 
First point:
In One Piece, each island has a distinct climate zone that extends hundreds of kilometers beyond the landmass and into the surrounding ocean. These zones have stable, consistent weather, such as winter or spring depending on the island. Outside of these climate zones are the waters of the Grand Line that are highly turbulent and characterized by chaotic weather. This is a consistent part One Piece's world that Oda has made sure to include whenever the crew traverses between locations.

The reason this is brought up is because in the current calc of planet, the height of the top-left panel of this page is used as a lowball estimate for the width of the Grand Line. The main argument in the OP is that there is no way to determine whether other islands are present in that panel since Alabasta is extremely large with a diameter of 5000 kilometers, meaning smaller islands would not be visible in the birds-eye-view.

The counter to that point is that the closest confirmed island to Alabasta, Drum Island, has a large and visually distinct winter climate zone. Even if Drum Island’s landmass were too small to be directly visible at that scale, its surrounding climate zone would. The unstable weather patterns of the Grand Line between Alabasta and Drum Island should also be visible, as it's consistently depicted as having a stark contrast to stable climate zones.

*Related point: Alabasta is canonically toward the middle of the Grand Line, so the argument that it borders its edge are invalid

Second Point:
The next argument against the planet size has more to do with consistency. It claims that if the planet were truly as large as calcs suggest, circumnavigation would take an unreasonably long amount of time, especially since most travel is done by ship.

The counter to this is that travel speed in the series is almost never portrayed consistently or realistically to begin with. For example, when the Straw Hat crew travelled to an island where a character that has a 4000 kilometer clairvoyance range lives, they entered her range the night before arriving, even though they set sail a day earlier. This implies that they covered a distance of about 4000 kilometers overnight, which does not align with conventional ship travel speeds. The key takeaway from this being that Oda treats travel speed as flexible and dependent on narrative needs.

Third point:
Something else in the OP is that the current moon size comes from Boichi's Zoro vs Mihawk One Piece. The argument against using that panel is that even though it's accepted as tertiary canon, the primary canon should be prioritized.

Nobody has any real issue with prioritizing what comes from the original manga. However, the only scalable depiction of the moon seen in it is from a planetary model.

The counter to this is that the model comes from Ohara’s Tree of Knowledge, which is the world’s greatest hub of information and scholars and was created and maintained by the world’s leading historians and archaeologists. Given that context, there's basis to treat the model as a credible in-universe source as they would know better than most.
Most of the summary of my arguments can be found in the OP.

KT and Kachon’s main point is that the weather conditions for each Island as well as the ocean would be visible in the panel, but I still don’t think that would be the case due to the massive zoom out, with again, each pixel being 227km by 227km with no accepted island calc getting to even a ninth of that area. And each climate zone extending hundreds of kilometers, something I don’t even know has been proven yet, doesn’t really matter when a single pixel also extends hundreds of kilometers. And this is what the climate around drum island looks like. Alabasta has not been agreed upon by both sides to be in the middle of the grand line

The thing about the strawhats entering the vision of a character with a range of 4000km is completely false, as we have no confrontation as to when they entered her range, and that range of vision is an ability that needs to be activated.

The Boichi problem is misrepresented. The Boichi panel is an adaptation that does both follow the canon rules for adaptations on our page at all, and also contradicts the main story. And the ohara globe has problems with being used to. It is not supported at all by the main story and the reason the Boichi panel was used in the first place was because it’s use was not agreed upon
@Naito-desu
 
So, can't say much about canonity part as that's not my field of expertise here, but perspective makes it questionable for measuring off planet. Iirc someone has mentioned in the thread that there's a model or something, I'd prefer if we measured where perspective wouldn't be a problem since moon in that panel could easily be closer to POV.

Since ship travel speed stuff is consistently inconsistent in the series I don't think that it's a good reason to discard calc because of that.

OP is right that climate range needs to be proven, for example if it extends to a hundred kilometer it won't even correspond to one single pixel of the panel at that distance. At such big scale it's expected that we won't see them.

As for horizon method, I find it more or less reliable as we mostly work with direct statements. As for arguments regarding apparent horizon, terminal velocity, etc. I think that while it'll be a problem for supporters to have feats where they need variables they can't realistically get, same goes when we're talking about them being needed for counter arguments. Supporters aren't obliged to find terminal velocity for example (Ik it's not main argument or anything, but I'm just giving an example), they can just say "it's just unknown to us for such a different planet so if you think it's contradicting, calculate it yourself prove that it contradicts current version of calc".

Currently I have no idea how that'll work for Alabasta so I'll just comment on math part of calc.

So we know that river is 50km wide, and we know that bank from the other side can be seen via a direct statement. If it can be seen from H1 meters above sea level, bank's height is H2 meters above sea level and distance to the bank is 50 km in an arc:

50000 = R * (arccos[R/(R+H1)] + arccos[R/(R+H2)]) where arccos gives us value in radians.

H2 is 2.27 m and H1 is 1.551 m (I doubt that it's 1.5 meters above sea level but for now I'll just tackle math part), I tried in Wolfram Alpha and some other calculators but they can't solve the equation unless H1 and H2 are equal but since H is very small compared to R, using Taylor series gives me around 165k km radius. It makes grand line 5x size of Alabasta's diameter but idk if it's a contradiction or not.
Now I have to look into, if we gonna calculate the landmarks (which is the case for different planets and all) and surface features.

I like to use a irl example of when a landmark/surface feature was measured at 446 KM in length with the width of up to 18 miles (29 Km).


Now I think about it, we don’t actually have any standards when it comes to guess estimation to a planet’s surface features including other things.

My assumption is that you simply and quite likely measuring the length of the Grand Line rather than the width of the Grand Line upon doubling checking here.

If I understand this correctly, we just using the actual length of the Grand Line and not the width of the Grand Line actually.




So even I am unsure how to take the mathematical results at face value if we consider it more of a length rather than the actual width of the Grand Line which is how wide a object, land features, and so on is.


 
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I don't quite understand what you mean here. We don't use length of grand line anywhere. We're just finding minimum needed planet radius based on width of Alabasta river and the curvature. I just mentioned width of grand line to see its size compared to Alabasta and will it be inconsistent or not.
 
I don't quite understand what you mean here. We don't use length of grand line anywhere. We're just finding minimum needed planet radius based on width of Alabasta river and the curvature. I just mentioned width of grand line to see its size compared to Alabasta and will it be inconsistent or not.
Do you disagree with using the birds-eye-view shot of Alabasta?
 
I don't quite understand what you mean here. We don't use length of grand line anywhere. We're just finding minimum needed planet radius based on width of Alabasta river and the curvature. I just mentioned width of grand line to see its size compared to Alabasta and will it be inconsistent or not.
Hmm, I see.

Fair enough, but to avoid cluttering the thread, I will tell you on the message wall regarding a map.
 
KT and Kachon’s main point is that the weather conditions for each Island as well as the ocean would be visible in the panel, but I still don’t think that would be the case due to the massive zoom out, with again, each pixel being 227km by 227km with no accepted island calc getting to even a ninth of that area

For the love of GOD cut this shit out
 
Where or what is the issue with using the Birds Eye shot?
Kachon said in his summary that there's not only islands but also climate zones and we don't see any in the panel, which I disagreed with since it hasn't been proven that there is one that would be visible at such big scale.
 
Kachon said in his summary that there's not only islands but also climate zones and we don't see any in the panel, which I disagreed with since it hasn't been proven that there is one that would be visible at such big scale.
You respectfully don't know what a climate zone is

The climate zones are not just random spots in the sea. Each island has its own climate zone, and when you go to another climate zone, it SWITCHES. So the whole area's climate zone, completely different. It would not take up a square in alabasta's sea. It would completely change it up.

I will quote this again
The climate of islands is not limited to the island itself, it would stretch to the surroundings.

There is snow for hundreds of miles going out drum island, the previous island from Alabasa, the closest as well, yet there is not a single showcase of clouds producing snow in the shot. And please note, there would be a summer island for every 4 islands. On top of that, it is not a small section of changed sea, it is a climate swap.
It would not look like this
veezeQl.png

It would look like this
Ncl8kLi.png


The climate would completely swap for that entire side that it's on. Not just a small dot. It is not "a climate zone inside a climate zone", it is THE CLIMATE SWITCHES COMPLETELY WHEN IT HITS A NEW ZONE.

You and Damage do not understand the point of a climate zone. It is not just going to be a dot inside of a zone, it is an area completely split off.

It's not that damn difficult.
 
You respectfully don't know what a climate zone is

The climate zones are not just random spots in the sea. Each island has its own climate zone, and when you go to another climate zone, it SWITCHES. So the whole area's climate zone, completely different. It would not take up a square in alabasta's sea. It would completely change it up.

I will quote this again
Huh? Not necessarily, it depends on distance to the clouds/their size. We can't even say that they're outside of Alabasta from this panel alone due to perspective. Because POV is a point, it's not a flat surface, just because it captures area of billions of km^2 at surface level doesn't mean it captures anything close to that at high altitudes.

Pick a point between Alabasta and edge of panel, as this object goes up it'll eventually appear bigger on the panel yeah but it'll also disappear from your field of view at one point. Clouds that are far from alabasta (not by height but X, Y coordinates I mean) will most likely not captured by POV by far. Just as I already said those clouds can even be just above Alabasta, unless you have a reliable way to measure size and distance to these clouds.
 
only 2 of those get past an seventh of the area mentioned. One of them Has had their problems illustrated in this thread, and the other one had its problems illustrated by damage. Neither of which are on the verse page
 
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Huh? Not necessarily, it depends on distance to the clouds/their size. We can't even say that they're outside of Alabasta from this panel alone due to perspective. Because POV is a point, it's not a flat surface, just because it captures area of billions of km^2 at surface level doesn't mean it captures anything close to that at high altitudes.

Pick a point between Alabasta and edge of panel, as this object goes up it'll eventually appear bigger on the panel yeah but it'll also disappear from your field of view at one point. Clouds that are far from alabasta (not by height but X, Y coordinates I mean) will most likely not captured by POV by far. Just as I already said those clouds can even be just above Alabasta, unless you have a reliable way to measure size and distance to these clouds.
I'm completely lost on what it is you're talking about.

An island's climate zone is the climate around an island. It changes when it gets to the open sea, and that changes again when you get to a new island's climate zone.

Please skim through this
I'll say this again.
The significance of the shot shown is to show the overall Alabasta climate.
Like I said
"The entire purpose of the panel in that frame was to showcase the area that rained during the fall of Crocodile, what was being zoomed in on was the rain that hit the large climate, turning the summer island into a place of rain."

We know that for every single Island in One Piece regarding the climate, there is a general area for where every stable body. is set. Whether in Paradise or the New World.
In the planet upgrade thread we see this, but I guess I need to bring it back up here with a lot more scans.

The Grand Line is an amalgamation of ridiculous islands and unsafe weather, and due to the existence of the varying islands with clashing climates, the weather around each island in the grand line is stable, until you escape that specific region.

It starts off first as you escape the Twin Capes, where due to the seven islands and the clashing magnetic fields and climates, there are rapid weather changes in seconds. You will see that the moment that they enter the Island's Climate Zone, the weather stabilizes, the sea stabilizes, and so on.

Stable weather signifies "single island climate". Wherever there is a single unchanged weather, it means that they are leaving the Climate Zone of the Island they were previously on. We see this as how they left Little Garden's Climate Zone and a ferocious cyclone appeared. Even the smallest instance when close to a climate (if not already in one) is a lightning bolt the size of a school.

We see as they leave Water 7, the weird climate is back. Then they leave the zone again, the weird climate is back.

The entire shot we see below is the zone of Alabasta. We know this because the closest island to Alabasta canonically (in 1 direction) is Drum island, a Winter Island with a snowy climate. This is why the next island that the Log measured from Drum Island was Alabasta, because there wasn't anything near it, and this is why the next one after that was Skypiea completely far away, because there wasn't anything near it again.

We would see snow clouds or a different color climate, but we never do. Everything is stagnant.

To make this claim that there's islands close to it would be dishonest. We know if there were islands near it, it would've been snowing in one of those areas, or another event would have happened in the wide shot of the climate. Because canonicaly, if you are near an island in One Piece, there is calm, and when you are far enough away, there is not, yet in the entire shot we see it is strictly calm.

One Piece explains these island scenarios, and to chalk it up to "an island is too small for a pixel" is probably the worst point you can use against it. Alabasta is an island within a zone, and no other island inhabits it. This is why when they leave Alabasta to the next closest island, they wonder what island the next one is, and when they enter Jaya's climate zone, they note that due to the stable island climate, they are in a different zone that is supposed to have a different weather, shown as they think it's a spring island due to the different weather.

TLDR
Different islands have different climates, and between the different climates are chaotic areas of water.
The shot shown in the overhead showed Alabasta's climate zone, and the closest islands to Alabasta are in completely different climate zones.
Outside of Alabasta's climate would show turbulent weather.
This weather was stagnant, the ocean was regular, and nothing changed throughout the entirety of the area, and they would've seen something else in the overhead if the overhead showed different climates.
The issue is that the climate zone does not change.

You would see unstable water somewhere. Dangeous clouds somewhere. You see none of it.

The climate zone for an island is supposed to be tens of times of its island's size. This is consistent for every island.

You don't need to perceive clouds because the zone would be rampant with a different phenomenon.
Seeing calm sea just shows you're inside of its cliamte zone.
 
only 2 of those get past a ninth of the area mentioned. One of them Has had their problems illustrated in this thread, and the other one had its problems illustrated by damage. Neither of which are on the verse page
I don't know how many times we have to tell you this, but it's annoying. Because I tell you, you say the same points, and I tell you again.
Not a thing in that thread tackles wano being small. In fact, it tackles onigashima and onigashima alone being small. the thread acknowledged how freakishly huge wano is and that onigashima being small cannot limit wano
The thread blatantly said "Onigashima is small, Wano is not. We can have a small Onigashima without having a small Wano".
But you fail to read it, again.

And again, the other one
Damage commented on the older version of the calculation. It was updated, and the update was accepted by another staff member
Like if you're not gonna read then don't respond. We told you these things already.
 
You would see unstable water somewhere. Dangeous clouds somewhere. You see none of it.

The climate zone for an island is supposed to be tens of times of its island's size. This is consistent for every island.

You don't need to perceive clouds because the zone would be rampant with a different phenomenon.
Seeing calm sea just shows you're inside of its cliamte zone
How do we know these issues you're talking about with the different phenomenon would be visible at this scale from this 70,000 km height? That's the main issue, what other visuals from such an altitude do we have to verify the claim that they should be visible?
 
You respectfully don't know what a climate zone is

The climate zones are not just random spots in the sea. Each island has its own climate zone, and when you go to another climate zone, it SWITCHES. So the whole area's climate zone, completely different. It would not take up a square in alabasta's sea. It would completely change it up.

I will quote this again
With all due respect, climate is the average weather conditions for a particular location over a long period of time.

Climate Zone is types of climates on a large scale and all






You will have to literally map the entire One Piece planet’s climates and separate them by the differing climate types.

So I gonna disagree with this attempt to link climate zones to the measurements of particular islands and other important measurements
 
One of the main supporting arguments for Blue being much, much bigger than Earth is distance to horizon. Results based on it are actually very close to current used size. In absense of other reliable methods for calculating size, this calc could probably cement status of Blue as being Sun-sized.


Could, if not for atmospheric refraction. Calculator that was used in calc calculates true horizon, not apparent horizon(which is influenced by this refraction).
So, what problems does it pose to this method?
1. Density at surface is greater than density at higher altitudes, which results in greater apparent horizon (usually by 8% for Earth). Correcting for this is pretty easy, it would just lower calced radius of Blue to around 690,000 km. Doesn't sounds too bad, isn't?
2. Noticed now I accentuated on "usually". Temperature and density gradients can vary considerably by time and location, which can result in apparent horizon being much further away(potentially up to 750 km under best conditions).
3. Noticed how I accentuated on "Earth". Exact value of atmospheric refraction depends on density profile of atmosphere (and associated with it temperature and pressure profile). We can't possibly know exact data for Blue, but we can speculate. We can be fairly sure that atmosphere of Blue is much bigger and thicker than Earth. And apparently, if we use current maps that are used for calculating size of the planet, atmosphere of the Blue can support airdrops at 114,000 km height. Indicating that Armstrong limit(which is defined by pressure) is massively higher than Earth one(19 km). What it does means?:
Thicker atmosphere means higher atmospheric refraction, and bigger apparent horizon. For example, Venus has true horizon of 3.5 km and would have been in pocession of apparent horizon much greater than 16 km(this link leads to pdf file), if not for funny atmospheric and temperature phenomena. But if we could see such a long horizon, and used it as method for calculating radius for Venus, we would get 128,000 km (compared to actual 6051 km for Venus), nuff said.

In short, this method would face two most important problems:
1. Size of apparent horizon(only thing we can see and directly measure) is greatly dependent on specific atmospheric phenomena, local temperature and density gradients, which can vary dramatically by time and location.
2. Using this method would greatly inflate size of planets with thicker atmosphere.

In conclusion, we shouldn't try to calculate Blue size via horizon measurements
@Floxy178

Btw, this comment did got overlooked, but what do you think of his assessment here?
 
With all due respect, climate is the average weather conditions for a particular location over a long period of time.

Climate Zone is types of climates on a large scale and all






You will have to literally map the entire One Piece planet’s climates and separate them by the differing climate types.

So I gonna disagree with this attempt to link climate zones to the measurements of particular islands and other important measurements
A Climate Zone for the Grand Line ≠ A Climate Zone for the real world.

A Climate Zone for the GRAND LINE is the climate for an area directly around the island where you can tell that there's stable climate for a nearby island.

Like yall not even reading bro and it's annoying
 
You respectfully don't know what a climate zone is

The climate zones are not just random spots in the sea. Each island has its own climate zone, and when you go to another climate zone, it SWITCHES. So the whole area's climate zone, completely different. It would not take up a square in alabasta's sea. It would completely change it up.

I will quote this again
Why would we even see snow producing clouds over all that area when the area where the island is visible has clear weather which we see twice (That's how stable weather is portrayed in the early colored manga while this is how snowy weather is portrayed with no small disconnected clouds in the sky and with snow falling around and we do in fact get a flashback while the crew was in the calm area back to a time when the weather was snowy which clearly showcases the difference and proves that the area around the island is calm), when Vivi was able to tell that they reached the climate region of a winter island because the weather has been stable and calm but cold for a while, when we aren't seeing any signs of rainy weather above Alabasta in the bird's-eye view despite the fact that it happens right when the rain starts which happened all over Alabasta for multiple days.

Also there's no proof that the climate zone stretches over tens of kilometers like in the image you posted and there isn't even proof that it's even the same size for all islands. That fact that Vivi considers stable weather as proof that an island is nearby kinda disproves that the climate zone would stretch that much considering Drum Island is tens of meters wide at best (due to the highest mountain in the island being 5km tall) it would make no sense for her to say that the island is nearby if we're thousands of kilometers away from an island that small.
 
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