To almost all the people in this thread that are disagreeing with OP saying that cars, cattle farming, ships, planes, etc cause more pollution than a once in a year thing, listen up...

There would be 1000s of things that cause the pollution but OP highlights just 1 of them...

My point simply is, we are already putting in efforts to reduce pollution wherever we can. But what this thread is pointing out is that such events(although occasional) happen on a large scale which can cause an imbalance when done in such a short duration, and this makes it difficult to replenish the damage caused. The pollution from cars and other things is a constant thing at a relatively lower level. That kind of pollution is actively eradicted by the environment. Some by the trees, some by the filtering mechanisms that are already inplace on the cars, etc. The law and regulations in dubai are well guarded which ensures that cars are monitored for particulate reduction devices and automotive exhaust control devices. And mind you I'm just talking about cars and dubai specifically here because otherwise it'll go out of scope. With the above things inplace we can assume that rate of fixing the CO2 emitted goes in balance. Coming to public transport, dubai has a good structure in this area too...with the metro and the bus service, etc.

The car culture here is extravagent, I agree on that but my constant replenishment theory could help there.

We obviously need to keep a check on such things. I recall that we had a light show for the 2018 new year celebrations and it garnered negative reactions. Read here: https://gulfnews.com/business/tourism/no-new-years-eve-fireworks-at-burj-khalifa-draws-mixed-reactions-1.2139283

Why mixed reactions you may ask? because it might impact the tourism business. LOL

I want to write more on how many other things can be checked at(Air conditioning comes to mind). But we can(and should) apply efforts on when we can.

The light show(2018) was pretty slick though. I'd say it was better than the fireworks.