Just ask a global warmer a question with a follow up. Ask them just exactly do you say the temperature of the earth should be, and how are you qualified to state that temperature. Additionally look at this fact. By far most of the earths land mass is is far north of the equator. Therefore if the earth was several degrees warmer, all of the land in northern Canada, northern Russia, and all of Greenland could be farmed. If all that land was farmed, it would support far more people than the land farmed does now.
Here is the problem with what you ask; Unless you are an expert in the field, which equates to being employed at a top scientific research facility AND having advanced degrees, all you are going to get, Pro AND Con, are opinions, not facts. And we all know opinions are like.....
I believe they go by what the experts say. One doesn't need to be "qualified" to state what experts say. Just sayin
@logical1 I prefer the "biological record". A green, pastoral Greenland in Viking times. Like wild grapes in Greener Eurasian steppes inviting a Mongol heyday. There are written records by many civilizations of those times. The Medieval Warm Up is so ignored by Climate Change alarmist. Go Figure! Climate Changes, just like the weather. Moi The Cool Down Is Coming hoards Fresh Water. Preferring to dump it in the ocean to shut down the Oceanic Thermal Conveyor rather than pipe it south!
Your problem is you are completely discounting the 4 billion people and trillion of dollars of infrastructure that will be impacted by rising tide waters. So the temperature should be that which does not cause the displacement of billions of humans and destruction of infrastructure and that which does not cause the oceans reef system to collapse, and I'm qualified to judge this because I live on the coast and watch the rising tides and work with reef restoration specialists who are documenting the system wide collapse of reefs.
So your idea is to let American farmers be screwed while Russia becomes a paradise? And at the same time US costal cities and Florida get swamped?
No, you are discounting the long-term near-linear trend of rising sea level, much or even most of which is caused not by higher temperatures but by isostatic rebound of undersea land that was glaciated during the last Ice Age, like the land under Hudson's Bay in Northern Canada. Some of that land is rising ~1cm/y, and the ocean water on top of it is consequently being displaced to all the rest of the world's oceans, raising world sea level. But the plain fact -- which you are also discounting -- is that most port infrastructure built 100 years ago is still intact, and not being inundated by rising seas despite the rise in temperatures since the early 18th century. All coastal areas are either rising (like the area around Hudson's Bay), subsiding, or stable because of local tectonic and geological processes that have nothing whatever to do with global temperature. Blaming global temperatures -- let alone CO2 -- for local coastal subsidence is absurd and anti-scientific. Oh, nonsense. The oceans rose hundreds of feet just 12Kya, and the reefs are doing just fine. No you're not. No they're not. They are just makin' $#!+ up to get more research money.
Florida is subsiding anyway for geological reasons. And American farmers stand to benefit from warmer climate on average, like farmers anywhere: higher temperatures mean a longer growing season, more rainfall, more lucrative crops, etc. That's why periods of warm global climate used to be called, "optimums" before that term was ruled politically incorrect.
So all of the scientists who agree on global climate change are making s#i! up? How have they all been able to be so consistent? Was there some secret meeting or mass email that went out to all of these scientists to make sure everyone was on the same page?
Let me know when N Y is under water as the global warming nuts told us would happen by the year 2000!!!
No, most of them are just going along like sheep to avoid career problems, and know little or nothing about the actual science. The media and their political supervisors have made clear to them what they are required to say and think, and like most people they obey out of self-interest and reluctance to go against the herd: "It is difficult to get a man to understand something when his salary depends upon his not understanding it." -- Upton Sinclair No, but the Climategate emails show the kind of surreptitious pressure La Carbonostra has exerted.
BTW global warming might be a hoax because of where weather stations are located. When many weather stations were located, they were clear out of town so city heat would not affect them. BUT------------as the years went by cities surrounded those stations, and the reported tempe went up. Proof of this is that several years ago a scientist suggested this was happening. So many weather stations were moved way out in the country. Amazingly enough they reported cooler weather. Some how the warmers have swept that little fact under the rug. Not all of us have forgotten tho.
~ Ah yes ...the good ol' days of "climate change" doom and gloom . Maybe we can get back to that after the social engineering experiment of Wuhan virus ? `
Oooh! The temperature where Australia does not get hotter longer heat waves every year https://www.climatecouncil.org.au/uploads/9901f6614a2cac7b2b888f55b4dff9cc.pdf https://www.bbc.com/news/world-australia-50817963 Where coral bleaching is no longer killing our coral reefs Where alpine environments and the ecosystems living there are no longer under threat
@Bowerbird too farmers adapt to food production commensurate with their environment. Similar to Romanized Euros having to substitute potatoes for grains when the Little Ice Age made grain dependence untenable. @Distraff Think HIStory Not HERstory Moi hoards Fresh Water! Rather Dump It In the Ocean Than Pipe It South. Or could be planning the shut Down of the Oceanic Thermal Conveyor?
Please be kind enough to state what these optimum are. And ground that burns your feet when you walk on it is not an optimum temperature. There are all kinds of problems that come with warming temps. The .main one being lack of rainfall and a lack of predictability. To farm weather must be somewhat predictable. Who wants to go from drought to torrential rain?
They are all opinions because there are multiple ways to calculate the temperature of earth. We could take the average of the temperature of the air over land areas. We could take the average of the air from the surface to as far as there are air molecule. We could take average temperature of the surface of the water and the surface of the land. We could take the average temperature of the total mass of earth to include terra firma plus atmosphere and water. You could also do a potential air temperature of the air which would be the average temperature after it is moved to the surface of the earth. There are multiple others.
It doesn't grow well above 90 F either. Tomatoes grow bether when it isn't too hot. A rose has an optimum temperature near 80 degrees F. Corn needs a soil temp of about 50 degrees for field corn at planting and 70 for sweet corn planting.
And we'll say "the temperature that earth's civilization grew up with". And then we'll ask why you thought that was a difficult question. And then you'll run. That's what's happened every other time a denier who thought he was being clever asked such a dumb question. Common sense. Fast change is very bad for people living in any area. There are two obvious flaws with that stupid plan. First, you can't grow crops on bare granite and arctic muck. Second, you've just condemned a few billion people in the tropics to death. Canada and Russia aren't going to say "Yes, world, totally overrun us!". But then, they're just brown people, so who cares, right?