Air quality - Printable Version

Air quality - Printable Version

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RE: Air quality - M T - 11-15-2018

(11-15-2018, 11:20 AM)82lsju Wrote: this site shows some places in Berkeley with AQI over 300 today

https://www.purpleair.com/map#11.46/37.8525/-122.3197

My initial reaction was one of skepticism, but I noticed at PurpleAir's site, downtown San Jose (Sensor: 15th floor 225 West Santa Clara St)had 183 while the BAAQD had 181. I live about 7 miles SE of Stanford and the outside conditions look pretty bad. Two nearby sensors are in the 230 range. (I do see readings as high as 446)

Nearest to Stanford, sensors indicate 230 to 257. Over the coastal hills, it does get below 200. Weather Underground maps show no more than slight breeze in any part of the Bay Area, and the wind directions are seemingly random. I guess there may be a slight bias to an onshore direction immediately at the coast.

I have doubts about today's WBB game being played.

RE: Air quality - BostonCard - 11-15-2018

So the Purple Air data is based on their own web-connected home instruments (you can buy one for yourself for a few hundred dollars). They have both indoor and outdoor instruments, and it should be noted that the measurements can be affected by local conditions (for example, traffic from a nearby road) and may or may not be calibrated. I wouldn't fixate on the specific purpleair measurements, but the system is good to get a gestalt of how things are looking and gives a wider range of measurements than the EPA (also, the EPA site has been swallowed in traffic of late).

I don't understand the obsession with an AQI of 200. It's not like someone breathing air at an AQI of 199 is safe, versus breathing air at an AQI of 201 is unsafe. The truth is the air is already considered unhealthy, and athletes' minute ventilation (the amount of air they are breathing in a given unit of time) is many-fold (10 to 20-fold) higher than what someone is breathing at rest. Moreover, for vulnerable people (young, old, patients with cardiovascular or respiratory disease) exposure to several hours of air like this is not healthy.

Yeah, having a sporting event in an environment with an AQI above 200 should be absolutely contraindicated, but due consideration should be given to postponing events at lower pollution levels. In this case, as many people have mentioned, there is not much downside to postponing the event by two weeks, so why not?

BC

RE: Air quality - BobK - 11-15-2018

Actually BC postponing the ncaa women’s soccer game will have dire consequences

RE: Air quality - BostonCard - 11-15-2018

(11-15-2018, 04:07 PM)BobK Wrote: Actually BC postponing the ncaa women’s soccer game will have dire consequences

It could be moved. The AQI in San Diego (where I am going tomorrow) is 33. Lake Tahoe is 10 (so Reno should be similar). Las Vegas, where my wife is for business is basically fine as well. My kids school was cancelled tomorrow. The air is unhealthy enough where people here are wearing N95 masks when going outside (AQI here is 220 at the moment).

This is ridiculous. There is no reason to expose the athletes and fans to air this unhealthy.

BC

RE: Air quality - Snorlax94 - 11-15-2018

First, as for the differing figures on PurpleAir, it appears some indicators explicitly say they are "outdoors" and others list things like "3rd floor," which indicates they may be indoors.

Near Memorial Stadium, the purpleair sensors are showing over 300. It's the (possibly) indoor sensors that are showing around 180, but Memorial Stadium is not indoors.

My son's school (South Bay) just was sort-of cancelled for tomorrow: if a child doesn't come in, it will be an excused absence. The email from the superintendent states that this decision is "supported for all K-12 schools in Santa Clara County." The county's population is about 2 million people.

For my part, I'm packing up the family and heading to Santa Barbara for the weekend, the closest clean air I could find.

RE: Air quality - BostonCard - 11-15-2018

https://airnow.gov/state/CA/index.cfm

These are the official numbers. Oakland (closest to Berkeley) is at 246. San Francisco is at 235. San Jose is 181.

[Image: cur_aqi_sanfrancisco_ca.jpg]

RE: Air quality - Farm93 - 11-15-2018

(11-15-2018, 04:32 PM)Snorlax94 Wrote: Near Memorial Stadium, the purpleair sensors are showing over 300. It's the (possibly) indoor sensors that are showing around 180, but Memorial Stadium is not indoors.

Seems like the smart PR play is to postpone Big Game until 12/1. Why wait?
To cancel it on Saturday AM, or worse minutes before kickoff, would create so many challenges.
The cancellation would also help the Pac-12 reinforce the idea that the welfare of California citizens is more important than trying to host a football game. I can certainly sit at the stadium enduring the equivalent of a Cigar Bar for a few hours, but seems crazy to make players go through that.

Though, I guess if it is has been a hard prep week for Stanford it must be closer to impossible for UCB.

I recall after the Pac-12 WSU at UCB game, UCB, the Pac-12 and others pledged to prioritize athlete safety NEXT time. I am sure they thought next time would be never, but NEXT time is this Saturday apparently.

FWIW - NCAA Soccer should definitely move to a venue in Socal. Potentially some place like UC Irvine. They are hosting a Men's Soccer game tonight, so the venue is soccer ready. FWIW2 - I would have said the StubHub center but the LA Chargers play on Sunday.

Farewell, my unbreathable - Redrum - 11-15-2018

Back home where everything doesn't burn quite so enthusiastically. Lotsa great memories, saw an unprecedented number of Stanford home games this fall, and one hell of a respiratory gift from both Southern and Northern California. Grew up in SoCal and thought the smog and fire smoke from the 50's, 60's and 70's had inoculated me against crappy air. I was wrong. Boy was I sneezingly but mostly wheezingly wrong. Tore me up and made the flight home a real adventure. But I got to see four Stanford wins...including USC, so I guess I'll just enjoy breathing my usual Humidity Belt overdose of pollen and count my blessings. Beat Kal!

RE: Air quality - 82 Card - 11-15-2018

Interpreting the Purple Air numbers is tricky. I don't know enough about the conversions offered to know what to make of them.

Looking at the weather tower by Lawrence Berkeley Lab, unadjusted PM2.5 gives an AQI of 332. If you apply AQ&U conversion, you get 272. If you apply LRAPA conversion, you get 195. Problem solved. Play ball. On the other hand, if you look at PM10, the unadjusted reading is lowest at 330 AQI.

Most of the lower readings in the Berkeley hills are indoors. You have to unselect the indoor sensors every time you refresh or change settings.

RE: Air quality - martyup - 11-15-2018

Given how many of our players are injured, I say cancel it and let them heal. It's not worth the risk anyway.

RE: Air quality - Phogge - 11-15-2018

The AQI won’t improve much. They should just have the balls to postpone tonight.

RE: Air quality - 82 Card - 11-15-2018

(11-15-2018, 06:18 PM)martyup Wrote: Given how many of our players are injured, I say cancel it and let them heal. It's not worth the risk anyway.

The Bekeley AD would see that as a reason not to cancel.

RE: Air quality - OutsiderFan - 11-15-2018

My sister in Sacramento just told me the AQI is 351 there. Schools being cancelled tomorrow.

RE: Air quality - 82lsju - 11-15-2018

(11-15-2018, 06:22 PM)Phogge Wrote: The AQI won’t improve much. They should just have the balls to postpone tonight.

gostanford has updated the "air quality" page to include the home events for this weekend

https://gostanford.com/news/2018/11/9/athletics-air-quality-notice.aspx

RE: Air quality - Farm93 - 11-15-2018

(11-15-2018, 06:22 PM)Phogge Wrote: The AQI won’t improve much. They should just have the balls to postpone tonight.

It is such an EASY PR move that I am sure the Pac-12 will screw it up. UCB should get all of those Alameda County support services out to the Camp Fire area to offer support or relief for public service workers up there, etc.

Nah, I am sure the Pac-12 and UCB will wait until 4:15PM on Saturday to postpone the game.

FWIW - the Pac-12 Nets schedule on Saturday is overloaded. So moving the Big Game out would allow the Pac-12 to avoid those overlaps.

The Pac-12 CG is not going to be that critical to anything, but a good game could benefit from a ratings bump if the CG game at that time becomes a blowout.

12/1 is an awful date for me, but I would rather be told 12/1 tomorrow than be told 12/1 at 4:15PM on Saturday.

Or worse...be told about a restart/reschedule after the game has started.

RE: Air quality - BostonCard - 11-15-2018

Cal cancelled its mbb game.

[tweet]https://twitter.com/calmbball/status/1063229160548556801?s=21[/tweet]

I agree with others. Just cancel the game now and reschedule for the week after thanksgiving.

BC

RE: Air quality - Viking_Guy - 11-15-2018

FWIW, Cal just cancelled all classes for Friday, November 16.

My office is also closing.

The email from the campus administration left open the possibility of playing Big Game, but seemed to hedge a bit - that if the air quality was as bad as forecast on Friday, they would reevaluate (which to my mind means cancel).

The wind shift prediction keeps sliding farther into the future - it started as Friday AM, then afternoon, now Friday night or Saturday AM.

VG

lex24 - lex24 - 11-15-2018

I was in Berkeley this morning. Just awful. Hard to think they’d play if it is similar Sat.

RE: Air quality - JJJ - 11-15-2018

I don't think this particular link has been posted before, Air Quality Update from calbears.com (It's just below the cancelled hoops game article linked above.)

http://calbears.com/news/2018/11/15/athletics-news-air-quality-update.aspx

Quote:Thursday, 4:30 p.m. update: No firm decision has been made regarding Saturday's Big Game between Cal and Stanford. We are continuing to monitor air quality, which can fluctuate as conditions change. We will defer a decision on whether to play the game once we has more data that would reflect conditions on Saturday.

RE: Air quality - winflop - 11-15-2018

Santa Clara closed at 10am today and closed tomorrow.
St Francis moved tomorrow's playoff game vs Aragon to Salinas - originally scheduled last weekend

Forecast for Saturday is still not good. I give it a 50/50 chance at best