Climate Change

[californiagrown]

Crazy amount of politics involving the Mendenhall. People were dumping cars in the river to try and prevent flooding since they started building there. In 1971 the borough and state asked the army corps to study the river to address flooding. The army corps came up with a standard project flood of 47,000 CFS. I think this event hit 26,000. Not sure when the First FEMA maps were produced. They did see continual revisions. Each time the public and borough challenged the revisions as people did not like the idea of insurance going up. Lisa Murkowski sponsored the Homeowners Flood Insurance Affordability Act of 2014. This was response to Juneau claiming the new maps were not accurate and causing financial harm to homeowners. After the jökulhlaups started in 2011 the borough worked with the feds to bring in money for mitigation. The homeowners rejected the offer. They did not like the costs they were asked to share. would be interesting to know what FEMA revisions were objected to and if those homes were affected by this flood. Not living in Juneau and not having followed this issue I can only offer an opinion. Not much flat, easy buildable ground in the area. The Juneau borough was not going to let it go undeveloped.

If the standard flood was modeled at 47k cfs, and this catastrophe was only 26k cfs, id say the folks were justified in calling out the corps for being unreasonably conservative. Things SHOULD get fucked up in 500 year events... it would be unreasonable to write code for such rare events.

That said, common sense says that if you build in the flat area around a river, you will deal with flooding at some point. there is a reason its a flat (flood) plain. Now double that paranoia for anything fed from a nearby fucking glacier!

[bodywhomper]

It looks to me that the issue with the Juneau flood was erosion and bank stability. That’s difficult to model and calculate, per my understanding working with hydrologist and modelers.

BFD, thanks for the info.

[Supermoon]

https://youtu.be/e47lHyQZ2I4

[k2skier112]

You know shits real when Bill Nye starts dropping F bombs

[SumJongGuy]

You know shit's real when Hawaii's on fire and mountain towns are underwater.. Sharks all over the northeast coast up to Cape Cod..

[mcphee]

^orcas are organizing, attacking, and teaching others to do the same

[SumJongGuy]

^orcas are organizing, attacking, and teaching others to do the same

I know. I started that thread in the Kayaking forum area. They take out the rudder first on the bigger boats...

[Stuntmonkey]

Nuclear power plants produce routine radioactive emissions in air and water, produce nuclear waste, and create conditions for disasters similar to Chernobyl and Fukushima.

CANDU reactors can't do what RBMK reactors did in Chernobyl / Fukushima.

[Harry]

CANDU reactors can't do what RBMK reactors did in Chernobyl / Fukushima.

I’m certainly not an expert, but I don’t think Fukushima was a RBMK reactor.


Sent from my iPhone using TGR Forums

[chaka]

Fukushima is a BWR/boiling water reactor design. CANDU is a PWR/pressurized (heavy) water reactor design. Neither designs are prone to prompt-critical reactions like RBMK.

[SumJongGuy]

No clue what the Sharon Harris plant is here but I do have a stash pf potassium iodide and Geiger counter and EMP detector with the rest of the shit I hope we never need.

[Cocximus]

I had some direct experience with a solar panel for the past two weeks in mostly desert areas. I learned its output quickly drops when the sun is not hitting it at 90°. Is this the same for commercial large scale power generating solar farms? What is the output % during a day for a solar farm? Yes, there's set-up for sun tracking panels but they are not common on big solar farms.

[SumJongGuy]

I had some direct experience with a solar panel for the past two weeks in mostly desert areas. I learned its output quickly drops when the sun is not hitting it at 90°. Is this the same for commercial large scale power generating solar farms? What is the output % during a day for a solar farm? Yes, there's set-up for sun tracking panels but they are not common on big solar farms.

Solar farm panels are on a pivoting bracket that keeps them pointed at the sun throughout the day,

[Stuntmonkey]

Solar farm panels are on a pivoting bracket that keeps them pointed at the sun throughout the day,

Not always. Many many farms are fixed position ones. I've built 4 200+MW farms and it was 50/50. The fixed position ones were inherently cheaper and easier to maintain, but efficiency was not great. The tracking ones were very efficient, but holy fuck they were the biggest pain in the ass to install, program and maintain. That said, both of the tracking ones were from a company called Soltec and they didn't have the best track record.

Example;

[Cocximus]

Yea, most big installations are fixed. So my question was, what does a 100mw solar farm put out from sunrise to sunset on a perfectly clear day.

[SumJongGuy]

I'd think the farther north or south the panels are, the more the need for tracking capability.. Seasonal differences would matter more farther from the equator.

[joeshek]

Yea, most big installations are fixed. So my question was, what does a 100mw solar farm put out from sunrise to sunset on a perfectly clear day.

https://pvwatts.nrel.gov/

Calculator that will give you the output of a solar panel installation anywhere in the US. It takes into account seasonality, as well as typical weather patterns.

Over the course of a year, a 100mw installation will produce150,352,188 kWh in my home zip code in CO, using the default installation angles in the tool.

[joeshek]

Also relevant - cool article in the times. Compliments the RMI slide deck that was circulating a month or two ago.

https://www.nytimes.com/interactive/...smid=url-share

Message - buckle up. Renewable (and EV) transition is going to happen fast over the next 5-10 years. And the IRA is having a way bigger impact than anticipated.

[Cocximus]

https://pvwatts.nrel.gov/

Calculator that will give you the output of a solar panel installation anywhere in the US. It takes into account seasonality, as well as typical weather patterns.

Over the course of a year, a 100mw installation will produce150,352,188 kWh in my home zip code in CO, using the default installation angles in the tool.

Cool links thanks. Seems like "solar is cheapest per kw" does not take into account a multitude of factors such as downtime and as someone pointed out earlier, storage.

Build nukes. Worse case scenario they wipe out a bunch of people which in the end still benefits the environment.

[neufox47]

Yea, most big installations are fixed. So my question was, what does a 100mw solar farm put out from sunrise to sunset on a perfectly clear day.

My rooftop 13.2 kWh system does a max of about 83 kWh in a day. I do not have ideal exposure. 1/2 of the panels face east on a 3 pitch roof and the other half face W on a 6 pitch. The west facing panels are nice for tou generation during peak hours though. By me, a kWh produced from 3-9 pm is worth a little over double any other time.

This system is shaping up to be one of my better investments. It should pay for itself in about 5 years, maybe less at the rate PGE increases rates,and hopefully it lasts 20-30.

[kamtron]

I had some direct experience with a solar panel for the past two weeks in mostly desert areas. I learned its output quickly drops when the sun is not hitting it at 90°. Is this the same for commercial large scale power generating solar farms? What is the output % during a day for a solar farm? Yes, there's set-up for sun tracking panels but they are not common on big solar farms.

Incidence angle matters, just like sun angle for pow preservation or corn softening. Trig

[ticketchecker]

Physicist, meteorologist testify that the climate agenda is ‘disastrous’ for America

https://www.theepochtimes.com/articl...PV2dMJTwQIo0zU

[old goat]

Emeriti professors. Who obviously don't get outside much.
Happer is 84 years old, and his field was optics, not climate.
Lindzen is 80, and his field was atmospheric physics, not climate.
So old guys yelling at the sky, literally.

[skaredshtles]

Physicist, meteorologist testify that the climate agenda is ‘disastrous’ for America

https://www.theepochtimes.com/articl...PV2dMJTwQIo0zU

Epoch Times?

Srsly?

[paulster2626]

Physicist, meteorologist testify that the climate agenda is ‘disastrous’ for America

https://www.theepochtimes.com/articl...PV2dMJTwQIo0zU

You should be concerned that something from the Epoch Times comes across your field of view, and even more concerned that you feel it is share-worthy.