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Can you please help me identify this stucture ?

Fari

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This is on a roof, in my hood, where air quality is such a thing that it became political a long time ago already.

People with worker white helmets are climbing up there almost every day. Sometime twice in the same day.

Air measurement is my guess but I know nothing about this and I'm really curious, because they don't want to tell me when asked.

 

Fari

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Thanks!

Maybe I didn't do much basics research AND I got carried away doing a "nice" thingy at montage. The "propeller" I spent my time looking at with Cid's camera ain't the most puzzling part.

My question now would be about the global structure. These folks must pass through my property to reach that place and they do it often. When ask for what purpose, they say they are bound to not say it by their employer... It must be important ;p

Considering there is popular law (trial) things against the city and some corporate actors because they use my hood as a dump for suspicious quality looking air (we can see one of the main actor in the background of the video, the famous Daishowa shop). I'd be surprise that they'd be spending so much energy just to monitor the strenght of the wind.

**

But now I realize it's easy to mess up such measurements of the wind with a quad propeller's air strength!
 
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Glabrous

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This is on a roof, in my hood, where air quality is such a thing that it became political a long time ago already.

People with worker white helmets are climbing up there almost every day. Sometime twice in the same day.

Air measurement is my guess but I know nothing about this and I'm really curious, because they don't want to tell me when asked.

This is an air pollution measurements site. The big dome things are high-volume particulate filter samplers, most of the rest is temperature/wind measurement.
 
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MNNJR69

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This is on a roof, in my hood, where air quality is such a thing that it became political a long time ago already.

People with worker white helmets are climbing up there almost every day. Sometime twice in the same day.

Air measurement is my guess but I know nothing about this and I'm really curious, because they don't want to tell me when asked.






This is a weather station used by the NWS. They are posted all over various locations in all cities. They measure wind speed, temperatures, humidity, barometric pressure, ect.
 
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Fari

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This is a weather station used by the NWS. They are posted all over various locations in all cities. They measure wind speed, temperatures, humidity, barometric pressure, ect.
I doubt it because there is this logo on their helmets :
 

MNNJR69

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I doubt it because there is this logo on their helmets :



This is the company that makes the equipment. If you read, they make equipment for environmental services. They might also have instruments for air quality as well.
 

Glabrous

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This is a weather station used by the NWS. They are posted all over various locations in all cities. They measure wind speed, temperatures, humidity, barometric pressure, ect.
I doubt whether this is NWS - they don’t usually measure particulates. It is normal practice to measure meteorological variables like wind at air quality sites to help analyse possible sources.
Seehttps://en.m.wikipedia.org/wiki/Particulate_matter_sampler andhttps://tisch-env.com/high-volume-air-sampler/pm10.
 
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MNNJR69

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I doubt whether this is NWS - they don’t usually measure particulates. It is normal practice to measure meteorological variables like wind at air quality sites to help analyse possible sources.
Seehttps://en.m.wikipedia.org/wiki/Particulate_matter_sampler andhttps://tisch-env.com/high-volume-air-sampler/pm10.


It's possible it could be something else. It does however looks very similar to many of the weather stations I have seen here. They do take many different air quality measurements here in Las Vegas. Specifics on air quality and particulate matter is the normal in weather forecasts on the local news stations. Let me know when you find out exactly what it is. It's gotten my curiosity stirred now.🤔 Lol.
 
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Glabrous

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It's possible it could be something else. It does however looks very similar to many of the weather stations I have seen here. They do take many different air quality measurements here in Las Vegas. Specifics on air quality and particulate matter is the normal in weather forecasts on the local news stations. Let me know when you find out exactly what it is. It's gotten my curiosity stirred now.🤔 Lol.
Just to be clear, what they’re measuring is not in doubt. It’s “who” is ‘they’ that is in question. Different agencies do this in different countries, but it’s not that common that national weather services also monitor particulates. I’d be very surprised if the US NWS was running a whole air quality network in LA, but I’m not American, so am quite prepared to be proved wrong. I’d imagine do NOAA use the data in their national air quality forecasts (which do involve EPS and NES), even if it’s the LA city authorities collecting it.

This site could be for central government (e.g. EPA in US), or more local (from state to city in US) or it could even be a consultant monitoring on behalf of a private business to support an Environmental Impact Assessment, before and sometimes after a new development. In all cases, they often sub-contract the work to specialist contractors, so you won’t know who has commissioned the work just by looking at the logos on the helmets.
 
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Fari

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Just to be clear, what they’re measuring is not in doubt. It’s “who” is ‘they’ that is in question. Different agencies do this in different countries, but it’s not that common that national weather services also monitor particulates. I’d be very surprised if the US NWS was running a whole air quality network in LA, but I’m not American, so am quite prepared to be proved wrong. I’d imagine do NOAA use the data in their national air quality forecasts (which do involve EPS and NES), even if it’s the LA city authorities collecting it.

This site could be for central government (e.g. EPA in US), or more local (from state to city in US) or it could even be a consultant monitoring on behalf of a private business to support an Environmental Impact Assessment, before and sometimes after a new development. In all cases, they often sub-contract the work to specialist contractors, so you won’t know who has commissioned the work just by looking at the logos on the helmets.

This is getting really interesting, and a bit confusing.

The video had been taken in my neigborhood, Quebec City, Canada.

The staff, when asked, answer that they work for Golder and that they can't say more. They then have a different way of behaving depending on their personalities. They are obviously not used at all to be forced to pass through civilian property because most of them act like if they are on their own ground, wich I do not like.

I've been speaking a bit more with one employee that seemed like a nice senior at some point, they where making a ruckus dropping black bags full of I dunno what kind of wastes this thing product, she was feeling like she owned me some explanations, yet she managed to give me close to none, but I felt her desire to be sympathic with me.

--

In the recent years some corporation had been found overpoluting my neighborhood air and were forced to give money to a load of people. The "Poussière Jaune" thing they called it.

I have the feeling that the data collected on my roof is used against me and my community.

This feeling is empowered by the fact the owner of the whole block, the guy who made the deal with Golder/Client does especially not want to tell me who is this "client".
 

Fari

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They are probably monitoring pollution from the fuel station next door


Wow! I never tought about that one (I'm probably downplaying gasoline dangers as a habit).

Very interesting idea. I'll do some digging now, I'm all interested and I got this cool video to show people.
 

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