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Thread: One more time...

  1. #11
    Guild Journeyer philipstephen's Avatar
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    Praise

    i am very impressed with the thought and detail you are giving this map... my scientific knowledge is not enough to be helpful on feedback... but it looks brilliant to me.

    phil

  2. #12

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    Quote Originally Posted by philipstephen View Post
    i am very impressed with the thought and detail you are giving this map... my scientific knowledge is not enough to be helpful on feedback... but it looks brilliant to me.

    phil
    Thanks! Really appreciate those comments

    A few slight updates to the precipitation map, namely some more arid areas and very wet areas added on the eastern continent, to fit more with what I had in mind AND to create a more realistic feel, at least in my opinion. Also touched a few things up here and there.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  3. #13
    Guild Journeyer altasilvapuer's Avatar
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    Info

    My reading of the temperature map was actually from both, but I commented mostly from the edit.
    And I've done the same with the precipitation maps, if you were curious:

    Most of the map looks good, but the bands around the equator may be backwards. It's hard to tell, as it's going to depend on where the tropic lines are. (They'll be at a latitude equal to that of your planet's axial tilt. For Earth, this is about 23.5°)

    Typically, you'll see bands of precipitation with the lowest precipitation being most often along those tropic lines (The Sahara, et al), and with high precipitation to either side. These lines are going to be pushed and bent around just like the ocean temperatures, though, due to the prevailing winds. Rain also tends to be stopped by mountains, which can cause deserts on the other side of them if there is not a prevailing wind that carries precipitation from the other side, as well.

    Taking a single example from your map, I'll look at the main body of the Western Continent, leaving off the peninsulae and the land connected by the isthmus. Assuming the world rotates as Earth does (i.e. not retrograde), the winds are going to blow more or less from east to west at the Equator, because of Earth's rotation. On the eastern side of that continent, the winds are going to be coming off an ocean - one of your warmest oceans at that. Since warm air holds a whole lot more moisture, I would actually expect high precipitation on that big plain-area.

    If you're curious and/or interested, this is the reason for the banding: http://en.wikipedia.org/wiki/File:Ea...irculation.jpg
    And the direction of the prevailing winds has to do with the coriolis effect on those cells.

    Looking back over this thread, I see that none of us have mentioned the Climate Cookbook, which is indispensible for this sort of work. In my opinion, it's worth at least a skim, even if you don't use the majority of the information there, as it explains all of this much better than I have.
    http://www.cix.co.uk/~morven/worldkit/climate.html


    Either way, you're doing great work, and if you chose not to follow science strictly, and stuck with your current climate maps, you've got the groundwork laid for quite an amazing map, here. If you want to figure out specifics on climate, then go on to the biome stage once you're comfortable with the precipitation stage. A lot of it depends on seasonal variations, and requires July and January maps of changes in temperature and precipitation, but ultimately that's only useful if you're curious.

    I've found that in texturing the map, all you really need to know is what's tropical, temperate, arctic, and the sections in between (your temperature map), and what's wet vs. dry (your precipitation map). So it's quite possible and plausible to skip biomes and move on to actually making the maps from here.

    -asp
    Last edited by altasilvapuer; 01-05-2010 at 10:26 AM.
    My current worldbuilding experiment(s):
    Geidor
    --------------------------------------------

    But I, being poor, have only my dreams;
    I have spread my dreams under your feet;
    Tread softly because you tread on my dreams.
    -W.B. Yeats

  4. #14

    Post

    Quote Originally Posted by altasilvapuer View Post
    My reading of the temperature map was actually from both, but I commented mostly from the edit.
    And I've done the same with the precipitation maps, if you were curious:

    Most of the map looks good, but the bands around the equator may be backwards. It's hard to tell, as it's going to depend on where the tropic lines are. (They'll be at a latitude equal to that of your planet's axial tilt. For Earth, this is about 23.5°)

    Typically, you'll see bands of precipitation with the lowest precipitation being most often along those tropic lines (The Sahara, et al), and with high precipitation to either side. These lines are going to be pushed and bent around just like the ocean temperatures, though, due to the prevailing winds. Rain also tends to be stopped by mountains, which can cause deserts on the other side of them if there is not a prevailing wind that carries precipitation from the other side, as well.

    Taking a single example from your map, I'll look at the main body of the Western Continent, leaving off the peninsulae and the land connected by the isthmus. Assuming the world rotates as Earth does (i.e. not retrograde), the winds are going to blow more or less from east to west at the Equator, because of Earth's rotation. On the eastern side of that continent, the winds are going to be coming off an ocean - one of your warmest oceans at that. Since warm air holds a whole lot more moisture, I would actually expect high precipitation on that big plain-area.

    If you're curious and/or interested, this is the reason for the banding: http://en.wikipedia.org/wiki/File:Ea...irculation.jpg
    And the direction of the prevailing winds has to do with the coriolis effect on those cells.

    Looking back over this thread, I see that none of us have mentioned the Climate Cookbook, which is indispensible for this sort of work. In my opinion, it's worth at least a skim, even if you don't use the majority of the information there, as it explains all of this much better than I have.
    http://www.cix.co.uk/~morven/worldkit/climate.html


    Either way, you're doing great work, and if you chose not to follow science strictly, and stuck with your current climate maps, you've got the groundwork laid for quite an amazing map, here. If you want to figure out specifics on climate, then go on to the biome stage once you're comfortable with the precipitation stage. A lot of it depends on seasonal variations, and requires July and January maps of changes in temperature and precipitation, but ultimately that's only useful if you're curious.

    I've found that in texturing the map, all you really need to know is what's tropical, temperate, arctic, and the sections in between (your temperature map), and what's wet vs. dry (your precipitation map). So it's quite possible and plausible to skip biomes and move on to actually making the maps from here.

    -asp
    Damn, I put that large arid area (was planning most of it to be a desert) there as an obstacle between the plains of the north of the Western Continent and the forests in the south of it. Would it be too contradictory to the rules of science to place that desert there? I could always come up with some backstory for it, which would be quite interesting, if not very scientific . I suppose that I could also place some mountains close to the coastline, maybe a bit random placing but I'm sure I could get it to fit somehow.

    Thank you 10000x over for that link, seems to be the perfect reference for this

    And while I might not be the best follower of scientific rules, I really appreciate the scientific insight on everything, as I want this world to be in the very least somewhat plausible.

    Also, I worked on the precipitation map a little in school, and actually created another arid area on the other side of the mountains on the Western Continent, which actually follows the rules. I did this because, once again, I want an obstacle that can't easily be avoided by travelers going from north to south and vice versa.

    EDIT:

    On the topic of banding, I do actually see a few bands (they are VERY variating & bendy and don't follow through all the way), which I made consciously/sub-consciously. This might not be enough though, they might have to follow all the way through, plus the low precipitation band is not surrounded by high. I made a quick sketch here (red is medium, yellow is low, purple is high): http://www.lilnik.com/bands.jpg
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	prec.jpg 
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ID:	20014  
    Last edited by Majortopio; 01-05-2010 at 12:24 PM.

  5. #15
    Guild Journeyer altasilvapuer's Avatar
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    Default

    I'm not completely sure, but in theory massive deforestation could create something like that desert there, I believe. It would probably have to be pretty large-scale, though, or the forest would just grow back. You might get something like a dry savanna that way, rather than a full desert, but I'm not sure on that.

    As for the banding, if you're curious:
    http://www.cartographersguild.com/sh...42&postcount=6
    Korba was quite a bit more clear with the banding than I was. I did the regular banding step, and then did my best to modify it based on air/water currents, but only posted the modified ones.

    As it is, your map doesn't follow the rules of science precisely, but if you look at the map, it doesn't look wrong until you start comparing each section to said rules. And by that, I mean that if you want it hardcore science, you'll probably need to change a bit. If you just want a general science-inspired placing of things, then you're doing great as you are.


    Repped, by the way, for all the indepth work, so far, because I don't think I've repped you, yet.
    -asp
    My current worldbuilding experiment(s):
    Geidor
    --------------------------------------------

    But I, being poor, have only my dreams;
    I have spread my dreams under your feet;
    Tread softly because you tread on my dreams.
    -W.B. Yeats

  6. #16

    Post

    Quote Originally Posted by altasilvapuer View Post
    I'm not completely sure, but in theory massive deforestation could create something like that desert there, I believe. It would probably have to be pretty large-scale, though, or the forest would just grow back. You might get something like a dry savanna that way, rather than a full desert, but I'm not sure on that.

    As for the banding, if you're curious:
    http://www.cartographersguild.com/sh...42&postcount=6
    Korba was quite a bit more clear with the banding than I was. I did the regular banding step, and then did my best to modify it based on air/water currents, but only posted the modified ones.

    As it is, your map doesn't follow the rules of science precisely, but if you look at the map, it doesn't look wrong until you start comparing each section to said rules. And by that, I mean that if you want it hardcore science, you'll probably need to change a bit. If you just want a general science-inspired placing of things, then you're doing great as you are.


    Repped, by the way, for all the indepth work, so far, because I don't think I've repped you, yet.
    -asp
    I'm sure that, aided by a little magic, creation of a desert would be possible then; thank you for that highly satisfying scientific explanation haha. It is a pretty large area, so it should fit that criteria. It fits perfectly as well, too, since there are large forest areas to the south of it, so a very interesting backstory could be created by that.

    I'm quite satisfied with a good science-inspired placing of things That's good to know, very relieving. I would've hated to find out it was completely wrong and have to remake everything. After all these scientific endeavors, I think I'll focus on the actual map for a little while, see how it develops and if I need to change anything in the precipitation/temperature maps.

    Thanks for the rep! I really appreciate it, as well as your advice on everything so far. I'm sure I'll have plenty more questions and problems as the map develops, so here's to hoping you stick by the thread haha.

    An update with the middle of the western continent worked on is coming soon, just to show what progress I'm making on the actual map after the temp & prec reference maps.

    (Repped back, btw.)
    Last edited by Majortopio; 01-06-2010 at 08:03 AM.

  7. #17

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    Okay, so here's the update. Nothing in the northern part of the continent has been worked on since the last update, this is all the southern part.

    The large forests to the south are pretty much complete, I will probably make some elevation in it.

    I've drawn up the larger mountains as well, there will of course be smaller mountain ranges here and there. More highlands will be surrounding the mountains that are there as well, but I was too lazy to add them this time around. Next update.

    The grassy/foresty part in the middle of the desert is something I've thought up that could go well with the setting, and the origins of that desert (which I believed we decided deforestation was a plausible enough reason). The slight grasslands in the eastern part of the desert are there because of the same reason.

    CC is, as always, appreciated.
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