BRC sun/wind direction map?

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dragonpilot
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Re: BRC sun/wind direction map?

Post by dragonpilot » Mon Jun 25, 2018 3:11 pm

I have an app on my phone that works well...Sun Surveyor Lite...if that wasn't mentioned earlier.
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Canoe
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Re: BRC sun/wind direction map?

Post by Canoe » Mon Jun 25, 2018 6:47 pm

silverfish wrote:
Mon Jun 25, 2018 2:58 pm
How does this look?
Sunrise, sunset and solar noon look credible. Not so sure about the arc that runs between them, but it's hard to tell at that perspective.
Be nice if you could add hourly lines out to the arc.

Seems hard to tell where the sun will be coming from, from the perspective of someone's camp, for setting up a camp layout with shade structures.

I haven't run numbers yet this year as I've not seen this years map nor the specific location on the playa.
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Popeye
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Re: BRC sun/wind direction map?

Post by Popeye » Tue Jun 26, 2018 1:57 am

I suppose it's accurate enough but the convention in North America is north at the top of the map, makes it hard to read.
But, maybe whoever drew this is from the southern hemisphere?
silverfish wrote:
Mon Jun 25, 2018 2:58 pm
How does this look?

Image
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Canoe
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Re: BRC sun/wind direction map?

Post by Canoe » Tue Jun 26, 2018 2:51 am

Popeye wrote:
Tue Jun 26, 2018 1:57 am
...
But, maybe whoever drew this is from the southern hemisphere?
I think the difficulty is in finding a perspective of a 3D model that provides one with a meaningful look & feel of what is happening, when that model shows a hugely reduced scale.

With the above flat views, you can see the direction the sun will be at, hence where your shadow will fall. And for how far, if one looks at the elevation at that time. Most people who've paid attention to sun direction & elevation can quickly wrap their head around making a model in their mind of where the sun will be. I have that ingrained, both from doing my maps and from being on the ground at BRC and seeing the through the day. But for someone who hasn't been to BRC, or has never paid attention close attention to the sun's arc regarding solar collection or creating shade, I don't know how quickly they really form an idea of that.

With that 3D model, the 3D arc is valid for someone standing at the Man, but is viewed from above ground from the NE. At the scale representation of the drawing, that's problematic, as if at Solar Noon one is standing at the South side of BRC by Walk-in camping, the sun will not be overhead to the North between Walk-in and the Man... And if you're over at Gate, the sun will not be up in the sky to the ESE...
You'd have to scale the view out a lot to have the line intuitively show that the sun at Solar Noon will be to the South up at 58 degrees. You can 'read' that from the drawing, but it's not an obvious relative presentation.
If you view that model from the South, so North is "up", the sun's arc at that scale would be even more misleading.

If you imagine that your camp is at the Man, then that presentation of the arc becomes a lot more usable.
Video games are giving kids unrealistic expectations on how many swords they can carry.
.
... but don't harm the red dragon that frequents the area from time to time. He and I have an agreement.

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Dactylion
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Re: BRC sun/wind direction map?

Post by Dactylion » Sun Jul 22, 2018 10:05 am

Here’s one that’s not spot on accurate, but seems to help people visualize the elements better...
BRC3Dsolwind.jpg
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DoctorIknow
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Re: BRC sun/wind direction map?

Post by DoctorIknow » Sun Jul 22, 2018 7:11 pm

As much as one wants to set up both for sun and wind, you may find yourself with NO CHOICE about putting your "housing" footprint as desired.

Therefore, have shade for any side ready.
Have your shade structure not dependent on ideal setup, and make that structure strong.
If you have a tent with your door facing the wind with no vehicle to block it, perhaps have extra shadecloth to stretch from your shade structure diagonally to the ground, deeply rebar or lag screw it in the ground and that will take some stress away from your door and the tent in general.

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Re: BRC sun/wind direction map?

Post by jasonk » Tue Aug 07, 2018 11:18 am

At least since 2014 (I don't know about earlier), the city/sun alignment has been consistent. Does anyone know why?

It can't be for "sunrise over The Man", the alignment is bad for that. Someone proposed it's so the airport runway can be on one side of the pentagon, and line-up well with proper winds for take-off/landing.

The only possibly-intentional "sun alignment" I see, is that 2:00 road seems to consistently line-up quite closely with sunset.

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silverfish
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Re: BRC sun/wind direction map?

Post by silverfish » Tue Aug 07, 2018 11:34 am

I think it's so the 6 o clock/ 12 o clock axis aligns with the length of the playa. Said a different way, if you stand at center camp facing the man - you look down the length of the playa. If the 6/12 axis pointed north you'd look at much closer mountains.

I imagine this is to give greater space for art to inhabit a blank canvas. Less clutter in the background, a sense of a larger, more infinite space.

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Token
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Re: BRC sun/wind direction map?

Post by Token » Tue Aug 07, 2018 11:45 am

The alignment has been steady more or less this whole millennium.

Why did Rod do it that way... ??? Hard to say and we can't ask anymore.

You will just have to take it as a grand Playa mystery.

RIP Rod.

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jasonk
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Re: BRC sun/wind direction map?

Post by jasonk » Sun Jul 28, 2019 4:21 pm

Any of you space-and-time-and-BRC geniuses know which way North will align with the city for 2019?

The last few years the 2:00 road seems to consistently line-up quite closely with West/sunset.

Where can I find good info about the city's geographic placement/alignment? Does BMOrg publish something useful?

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XPTom
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Re: BRC sun/wind direction map?

Post by XPTom » Sun Jul 28, 2019 4:47 pm

A map of the 2019 street layout was in the survival guide that came with my tickets last week. Looks like 4:30 is true south and 7:30 is true west.... very similar to recent years.
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jasonk
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Re: BRC sun/wind direction map?

Post by jasonk » Sun Jul 28, 2019 5:06 pm

XPTom wrote:
Sun Jul 28, 2019 4:47 pm
A map of the 2019 street layout was in the survival guide that came with my tickets last week. Looks like 4:30 is true south and 7:30 is true west....
ZOMG, there's useful info in the Survival Guide this year?!? Who'd'a thunk?

True north/south...hard to tell, the North arrow is so short. Do you think that thin line to the airport is supposed to be a north line? If so, then yeah, 4:30 is fairly close to true/polar north/south.

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XPTom
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Re: BRC sun/wind direction map?

Post by XPTom » Sun Jul 28, 2019 5:48 pm

If you filled in the map above 2:00, I'd say figure sunrise a little clockwise past 1:00. true east 1:30. South 4:30. true west 7:30. sunset 8:00. You can go to a solar calculator page but remember this rock we are on is tilted and the Aug 25 numbers vary a few degrees from 2 Sept numbers.... so why fine tune it?

,
How many old burners does it take to change a light bulb? Just one to change the bulb..... and five more to reminisce how good the old bulb was....

flexibility is the key to success....... and poor planning is the key to flexibility

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jasonk
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Re: BRC sun/wind direction map?

Post by jasonk » Sun Jul 28, 2019 5:49 pm

Oh, this is a great resource: http://unofficialbrcmap.com

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Molotov
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Re: BRC sun/wind direction map?

Post by Molotov » Sun Jul 28, 2019 8:10 pm

Sun and wind map posted on Reddit: Image

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Token
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Re: BRC sun/wind direction map?

Post by Token » Mon Jul 29, 2019 8:03 am

The truth is always found here:

https://innovate.burningman.org/datasets-page/

The document most relevant:

https://bm-innovate.s3.amazonaws.com/20 ... ements.pdf

The quote:
Elevation: 3904’
True North/South follows the 4:30 axis
Now geek out to the max!

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Token
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Re: BRC sun/wind direction map?

Post by Token » Fri Aug 02, 2019 8:28 am

Bumpity-Bump.

Read and use. Second page is chock full of good stuff. Canoe went especially geeky on this ... much obliged!

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Canoe
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Re: BRC sun/wind direction map?

Post by Canoe » Mon Aug 12, 2019 4:50 am

Skuzzy61 wrote:
Mon Aug 12, 2019 4:25 am
Might want to post a map of the city and how it is oriented as well. It might be helpful for those arriving at night. I know I had to do that for 2016 (10:00pm during a white out) and I nailed the orientation of the RV.
2019 BRC Sun Track Map
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BRC sun track - 2019.gif
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Video games are giving kids unrealistic expectations on how many swords they can carry.
.
... but don't harm the red dragon that frequents the area from time to time. He and I have an agreement.

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Canoe
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Re: BRC sun/wind direction map?

Post by Canoe » Mon Aug 12, 2019 4:57 am

But a much easier way to visualise the sun vs. shadows for shade, is a computer generated rendering.
.
viewtopic.php?f=277&t=101553
.
View of 7 am.
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BRC camp tent shade check - 7 am.jpg
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Video games are giving kids unrealistic expectations on how many swords they can carry.
.
... but don't harm the red dragon that frequents the area from time to time. He and I have an agreement.

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