Stadium Discussion
- Thread starter Gene
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I know through hearsay that they commissioned someone to do a study of the best angle for the field to be for that site, based on the sun like 5 years ago. Now I'm surmising; that probably also had to do with figuring out if the way they wanted to fit the stadium in that lot would create unwanted glare, or make it hard for the grass to get the light it needs. In conclusion, If they made it to a sun study, I agree they've done their due diligence well past the point we’re at now trying to figure out how the traffic will function.
The last thing we want is what DCU had to endure with the sun. Audi Field was rushed a little to open, I hope we have time to get everything right. And at least we have a temporary home we're used to get to that point
a little? id say a lot. there was a reporter hit by a steel beam on opening day.
What was the issue with the sun?
Never mind...
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I'm surprised that site even has any flexibility to angle the field.
Not quite—the camera is on the East side, so there is glare in the broadcast for games near sunset.
http://astro.unl.edu/2019/04/sun-glare-at-audi-field.html
Earlier this year physics undergraduate Brandon Harper began working with ESPN to solve a sun glare problem occurring at the new Audi Field in Washington D.C. During the broadcast of a soccer game last fall, a distracting glare due to the October sunset greatly interfered with the viewing of the game. The goal of the project was to determine when and if the sun could cause more problems like this during future games for the cameras located on the east side of the stadium. From photo and video evidence, the glare last October 13 lasted from about 5:00pm to 6:10pm when the sun finally set below the stadium walls with respect to the cameras. The glare was at its worse at around 5:50pm. The azimuthal and altitudinal coordinates of the sun were determined for that time using Stellarium (Az: 252°16' and Alt: 8°48'), allowing reference to the problematic position when checking dates for the 2019 season. It soon became clear that the azimuthal coordinate may not have an effect on the likeliness of a glare, as the sun will set year-round behind the uniform wall of the stadium, and the camera must be allowed to pan across the entire field. This left an emphasis on investigating the altitudinal coordinate of the sun during its setting. A video of the sunset as viewed from the camera stand was recorded in early March this year, allowing conclusions to be drawn by comparing it to the glare event and using Stellarium to check the coordinates. The problematic altitude of the sun was found to occur consistently about one hour before sunset each day, where the glare could be an issue 1.5 to 0.5 hours before sunset, drawn from the duration of the glare. The conclusion reported to ESPN was that they should be concerned about glare in their broadcast when filming on a clear day anywhere between 90 to 30 minutes before sunset on a given day. The ESPN crew in Washington D.C. was able to take this general rule away from the project and they are applying it to the future of sports broadcast at Audi Field.
A stadium at the GAL site would likely be oriented from WNW to ESE - end line to end line. That's not ideal, but it's probably okay - the sun in late afternoon games would be from the WSW and so at about a 45 degree angle to the pitch. It shouldn't interfere with play. The one possible concern is that the tight corner of the stands near the train station would be at the WSW end from where the sun would be shining. So, if the stands are short or empty at that corner, the sun will shine on through, but on the whole, I suspect it will be fine.
As for getting a good view of Manhattan - the tight corner faces out toward upper Manhattan/Washington Heights. The site is basically angled in the same way Manhattan itself is. This means that the skyscrapers of midtown would be straight down through the southern stands. I suppose those could be built lower than the ones on the other side to provide a view from the upper seats.
Below show site with top of page being north.
As for getting a good view of Manhattan - the tight corner faces out toward upper Manhattan/Washington Heights. The site is basically angled in the same way Manhattan itself is. This means that the skyscrapers of midtown would be straight down through the southern stands. I suppose those could be built lower than the ones on the other side to provide a view from the upper seats.
Below show site with top of page being north.
Ground-level parking lots. I think for the shopping center thing south of the train station but I'm not sure. Might be for baseball, too. Don't really know, to be honest.
Really like what you did with this. Can you do another version that takes the Deagan ramp over the MTA tracks from River Ave? That would free up another bit of space to expand the plaza on that side. And I'm not sure there is any reason why you couldn't run a roadway over the MTA for that stretch.
good stuff. also don't forget that the sun angle depends on the season as well as the time of day. Around June 21, for example, at 7pm EDT sun would actually be coming from the WNW, i.e. right behind that western goal, and that's about 90 minutes before sunset so it would be getting low in the sky. Around March 21 and September 21 the sun would be coming from the WSW in the late afternoon like you said, and would set at about 7pm.
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I know it would be expensive but a retractable roof would be great , the stadium can then be used year round (concerts, events, etc) it would make attending games in early March/April and November and rainy days much easier. I also would like to see a hybrid playing field , the same as the Ethiad at Man City has (7 % artificial turf ).
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This is mostly correct. The sun angle will come from a much more southern angle as the season begins in winter and gradually move northward until June 21. It will, however, never set north of due west - at least not in New York. We are too far north.
Quick, let’s call University of Nebraska-Lincoln physics undergrad Brandon Harper for the numbers
