alt Hacker NewsEl Niño is flooding California's coasts with the highest tides to come
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The tides are really high right now. It's very obvious that the water is much higher than usual. Can't wait until it starts raining on me more than usual too... I'll have extra water from both directions.
I am an oceangoing person in Socal.
This El Nino phenomena is caused by something called Bjerknes feedback. There is a recurring atmospheric 'wave' of relaxed and enhanced trade winds, called the Madden-Julien oscillation (the MJO) that travels slowly west to east across the planet with a period of approximately 60 days. The "active" phase of the MJO usually comes with a burst of westerly (west-to-east) winds in the west pacific. Those slow down the normally easterly (east-to-west) trades a bit. Some years, those easterly trades are slowed down a bit more than usual; this causes the heated up water in the western pacific to 'escape containment': deep warm water moves west to east, in a Kelvin wave. A strong series of these Kelvin waves can cause a mass of deep warm water to build in the eastern pacific. Upwelling there now brings warm water to the surface, instead of cold water, which means the air above the east pacific gets hotter, which means it rises -- low pressure -- which causes the trades to slacken further (-> the air moves relatively in a westerly direction to take up this low pressure), which causes another, stronger Kelvin wave, and so on and so on. This is Bjerknes feedback; it causes El Nino.
These Kelvin waves stop when they hit South America and split: half moves S->N along the N hemi coast, half moves N->S along the S hemi coast. Warm water is less dense than cool water, so there's a big mass of warm water near the coast. This lower density warm water wants to go 'downhill', offshore. Due to Earth's rotation, it's turned right as it travels (since it's in the Northern hemisphere), and then right again, back towards the coast, which balances against the offshore push. The net effect is a consistent mass of warm water held up against the land, and a consistent S->N current along the shore.
When the water is anomalously warm enough, when the El Nino is severe enough, this effect grows to be very large. In San Diego right now the real tide is around 1-1.5ft higher than the "standard" reading from a tide chart. Dive visibility has been incredible, the best on record, since the warm upwelling is drawing from nutrient poor water. Water temps have been incredible. Water temp is 73 degrees in San Diego right now, normally this time of year I'm in a 3/2 fullsuit. Tropical moisture has been off the charts. At a couple points this year, SoCal was the hottest and most humid place in all the USA. The consistency and count of south swells, including waves from tropical storms, has been absolutely insane. Weird currents everywhere, sandbars in crazy spots. Fog, weird bird action. My neighbor's beautiful 50ft tall Monterey pine was singed by this heat, turned brown from the pine beetle, and is probably going to die. I am buying sandbags for the house and big surfboards for this upcoming winter season. It's all just very very strange, I have never seen weather like this ever in my life. Never ever. And I still have decades to go. We'll see this winter, how bad the storms get...
Four days ago.
https://news.ycombinator.com/item?id=50236455
This kind of thing will be as regular as clockwork in a few years time. Still there are a lot of people that will simply not believe it.
This is more likely to be climate change related. It’s climate denial to try blaming it on El Niño.
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Way too much fresh water, won’t be able to keep draining the Colorado river
I remember when Gizmodo just posted cool technology stuff. I even had my stuff featured on their website a couple of times.
Edit: I haven't been on Gizmodo for a long time. Do they also have a rule saying you can't criticize them?
This inspired me to checkout Hackaday again. Thankfully they still just post cool tech stuff (even after they sold the website a few years back). I'm not cool enough to have my stuff featured on HAD though lol.
Stop eating meat if you actually care. Stop eating beef and dairy.
Massive amounts of land are destroyed and used for cattle. It's insane. Same with water, among other things.
Going veg cuts the numbers a crazy amount. 40-75% in terms of various metrics.
Our lives are built on excess consumption. We live lives of kings. We refuse to give up the largest sources of our damage when it isn't actually that hard. The excuses are so lame.
> “Catastrophes will start unrolling without significant state and federal government response,” Shilling predicted.
Realistically how much can they do? Sandbags and berms but it’s not like they can just raise these areas a few feet.