OpenGeofiction

Antarephia Climate

Posted by Aiki on 20 January 2017 in English (English)

Hello,

For the last few weeks, I have been facing some issues regarding the climate of my country Guai. The main question is not necessarily about writing an article or an article section about it but more about adapting the landscape to the climate (rivers' width, land cover, agriculture, etc.).

I have drawn the following sketch as a proposition for Antarephia climate with air and and ocean currents. I've tried to bear in mind that we are looking at the southern hemisphere but that Hesperic Ocean is closed by Kartumia to the west, meaning we won't have an Antarctic Circumpolar Current as strong as we have on Earth. Consequently, Hesperic Ocean is likely to behave like Northern Atlantic Ocean but "reversed": air and water go east and south instead of east and north. Western Antarephia would look more like Western Europe and Morocco than to Chile.

Anyway, it's not written in stone and I'd like to know whether it makes sense to you?

Comment from Luciano on 21 January 2017 at 00:12

You rock my world. Our world desperately needs more work of this insight and quality. Thank you.

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Comment from zhenkang on 21 January 2017 at 07:03

Actually I thought of asking about this and work on this, bit I don't really have time. I thought of currenta, air pressure etc. Maybe you can go on on Archanta? Are you by chance a geography teacher or student? (Just curious)

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Comment from zhenkang on 21 January 2017 at 07:04

P's can make a hurricane path through Commonia? Just a thought

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Comment from ruadh on 21 January 2017 at 08:56

@aiki, kudos my friend, an amazing piece of work, you should be very proud, many thanks! How long did it take you? Do you plan to submit your map to the wiki?

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Comment from Alessa on 21 January 2017 at 15:41

Awesome, Aiki. This really helps visualize things even better.

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Comment from Black Baron on 21 January 2017 at 16:07

Hi Mappers! Two years ago I was working on a Mars climate model for my Amateur Astronomers Society and I found a web which contained a high detailed procedure and indications for a Earth-like planet climate development. Here you are: http://worldbuilding.stackexchange.com/questions/1353/creating-a-realistic-world-map-currents-precipitation-and-climate

So, according to its content, is very difficult to achieve a realistic model in OGF, due to the fact that we must know the location of mountain ranges, etc... . However, I think thay could be a great challenge for a valuable team of mappers like us :-P

Could we create a working team on climate? Happy mapping!

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Comment from Aiki on 21 January 2017 at 17:32

Hello,

The sketch would make only sense on the coasts. As Black baron said, we know too little about mountain ranges but we do know that the planet rotates in the same direction as the Earth (see time zones article). On the sketch, I choose to display Southern Hemisphere's winter. In the summer, high depressions would move southward.

For Western Antarephia; Guai, Paxtar, Montran, Waldon and Ulanne display mountains inland. So at least west to these, it is likely that the climate spans from BSh, to CSb/Csa (depending on the orientation) to CFb. Of course, there would be variations depending on the topography and latitude (oceanic climate in Galicia, Spain is not the same as the one in Bergen, Norway). Due to rainshadow effet, the climate would be dryer east of the mountain range and possibly colder in the winter and warmer in the summer (variations of continental climate). Of course, the climate would turn wetter getting closer to the Central Ocean.

@zhenkang: I don't think a hurricane would cross Commonia. From what I remember, it needs warm water (is it 25° at least ?) to start rotating, that's why they rarely go further inland after they've made landfall.

@ruadh: I may submit the sketch to the wiki but I wanted to have some feedback on the verisimilitude of the model.

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Comment from isleño on 21 January 2017 at 18:09

Thanks for thinking about this, Aiki.

we won't have an Antarctic Circumpolar Current as strong as we have on Earth.

It won't be as strong, but it should still travel in the same direction, though: west to east. It seems to be going the opposite direction on the map?

Consequently, Hesperic Ocean is likely to behave like Northern Atlantic Ocean but "reversed": air and water go west and south instead of west and north.

You mean to say east, not west, right?

Western Antarephia would look more like Western Europe and Morocco than to Chile.

To be clear, Chile has some climates that are similar to Western Europe — though they're shifted a bit colder, because our Southern Hemisphere is colder.

Hope this helps. :-)

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Comment from Aiki on 21 January 2017 at 19:35

@isleño, thanks for the feedback.

  • Antarctic Circumpolar Current topic

Between 30° and 60° south (the lowest black line I drew), winds and ocean currents tend to move eastward and southward. On Earth, 50/60° south is the location of Drake Passage. That's why the current is so powerful, because no landmass stops it. Below 60° Easterlies blow westward. That is why I drew arrows in the opposite directions on the map.

  • Hesperic Ocean topic

I made an error in my comment but the map is "right". Water and air move eastward and southward. What I meant by behaving like Northern Atlantic Ocean and not like Pacific Ocean is that Hesperic Ocean, like the Atlantic Ocean is "closed" in the west on its outer end (high latitude). Water, south of 30°, would drift south and east after having followed Kartumia coast. In the Atlantic Ocean, water does the same, following US coast then going East and North before one of its branches slowly bends West on reaching 60°. Water is then pushed westward under the Ice Shelf and come back cold via Labrador and Bering straits. In the Pacific, Equatorial current pushes water west until it reaches Papua , then turns south toward Australia. When its comes back to America, water has travelled a long distance and has got time to cool off.

  • Chile/Western Europe topic

What I meant by comparing both locations is the influence water temperature has on climate. In both locations, winds blow, more or less in the same direction (poleward and eastward), but in Chile, water comes from the South/South West which colder, and in Europe, from the South/South West which is warmer. Thus, Puerto Montt region is way wetter (well, the Andes are pretty close as well) than let's say Western France which is even at higher latitude. I think Western Antarephia would be milder than Chile is.

I don't know if my explanation makes more sense but I'm may wrong anyway ;-)

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Comment from Alejandro24 on 30 January 2017 at 02:50

I look at it and I found it a little bit confusing. The hurricane point surges are more or less correct, but I would suggest more larger paths for some special stronger storms, being like extratropical storms and falling into the north of Belgonia. I see a little bit more confusing the currents neart the equator, many warm ocean currents are born near the equator. Remember that when the warm water gets more cold as it goes more closer to the poles, then it sumerges to the bottom of the ocean and there continues its way. About the air currents: make more visible the jet stream, this will rule many of the air currents along the hemisphere. And don't forget the coriolis force over the air and water.

I suggest you to watch the documentaries BBC Wild Weather, there are four parts of it and its a great resume of the geophysical fluid mechanics of the Earth, which is always our nearest model.

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Comment from Aiki on 1 February 2017 at 22:58

Hi,

I've tried to to take into account your comments in this version of the sketch:

  • Air: as I had chosen to depict Austral Winter, hurricanes makes no sense so I removed them. Jet streams (polar ones at least) are, I hope more visible in this version of the sketch. Again, this is the direction of the prevailing winds. Locally and on certain conditions (temperature, relief, pressure), this direction may change permanently or temporarily (period of time or season).

  • Water: I added equatorial counter-currents and some minor currents such as the one in Latina Bay. Mid-latitude currents bend now more sharply so that Coriolis effect is more visible.

  • Legend: I add the latitude of depicted lines to avoid possible confusion as mentioned by Alejandro. I tried to standardize arrows' width (well, sometime the tool was too confusing so I gave up) because speed of winds or ocean currents is not represented on the sketch.

Question: Eastern Anteraphian Current is already mentioned in many articles, but I think warm waters would move more quickly west and south, leaving regions south of Beligona headland quite cold (a colder version of Argentine Patagonia?). Consequently, I drew it as mentioned in these articles but would like to know if some of you may have idea why this current or branch of it would turn south after having reached the aforementioned headland? Something doing with the sea bed in that region?

Unfortunately, the former version has been already posted and used on the Wiki without notification :-/. I will upload the latest version after I have included final modifications you may indicate.

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