Mushroom
Gold Member
It isn't a prediction. It is an observation based on tons of data from global temperature readings on the ground, air, in the oceans, in space, and by proxy.
So that is what caused the Medieval Climate Optimum! Airplanes!
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It isn't a prediction. It is an observation based on tons of data from global temperature readings on the ground, air, in the oceans, in space, and by proxy.
Pssst! Geology is not climatology.And I notice that my questions are still unanswered, but the attacks continue.
I am a real geologist, registered in three states, and am published in the Journal of paleontology. Are you sure you want to wave credentials?
Pssst! Geology is not climatology.And I notice that my questions are still unanswered, but the attacks continue.
I am a real geologist, registered in three states, and am published in the Journal of paleontology. Are you sure you want to wave credentials?
But it would be amusing if you'd at least try to answer his questions.
It isn't a prediction. It is an observation based on tons of data from global temperature readings on the ground, air, in the oceans, in space, and by proxy.
So that is what caused the Medieval Climate Optimum! Airplanes!
Thus, current evidence does not support the notion of a Medieval Climatic Optimum as an interval of hemispheric or global warmth comparable to the latter 20th century. Astronomical climate forcing may have contributed to a long-term cooling trend throughout the second millennium that terminated in the 20th century. Increased northward
heat transport by an accelerated Atlantic thermohaline ocean circulation during Medieval times may have warmed the North Atlantic and neighboring regions, causing the warmest temperatures to be evident in Europe and lands neighboring the North Atlantic (albeit at notably varying times within the broader period of AD 900–1300).
A variety of factors thus may have contributed to both the moderate warmth of the Northern Hemisphere and the more sizeable and distinct North Atlantic/European warming
during the early centuries of the second millennium.
"But it would be amusing if you'd at least try to answer his questions."Pssst! Geology is not climatology.I am a real geologist, registered in three states, and am published in the Journal of paleontology. Are you sure you want to wave credentials?
But it would be amusing if you'd at least try to answer his questions.
No it is not strictly climatology. But many climatologists are geophysicists. And atmospheric science certainly does fall under the domain of planetary and Earth science, of which geology is the umbrella discipline. You cannot understand paleoenvironments if you don't understand the atmosphere.
"But it would be amusing if you'd at least try to answer his questions."Pssst! Geology is not climatology.
But it would be amusing if you'd at least try to answer his questions.
No it is not strictly climatology. But many climatologists are geophysicists. And atmospheric science certainly does fall under the domain of planetary and Earth science, of which geology is the umbrella discipline. You cannot understand paleoenvironments if you don't understand the atmosphere.
Unless, of course, you simply can't.
What caused the Little Ice Age, and what made it end?
Why are we accepting as a "standard temperature" a temperature that was established in the middle of one of the coldest periods in the last 2,000 years?
What happened to the wet marshlands of North Africa?
What happened to the fertile crescent?
What happened to the large inland wetlands in what is now Death Valley?
"But it would be amusing if you'd at least try to answer his questions."No it is not strictly climatology. But many climatologists are geophysicists. And atmospheric science certainly does fall under the domain of planetary and Earth science, of which geology is the umbrella discipline. You cannot understand paleoenvironments if you don't understand the atmosphere.
Unless, of course, you simply can't.
Did you not see my response #64? That answered at least one of his questions. As for the rest:
What caused the Little Ice Age, and what made it end?
Why are we accepting as a "standard temperature" a temperature that was established in the middle of one of the coldest periods in the last 2,000 years?
What happened to the wet marshlands of North Africa?
What happened to the fertile crescent?
What happened to the large inland wetlands in what is now Death Valley?
These are all academic questions that have answers in many scientific papers, and even College textbooks. I suggest to 'shroom to either buy a textbook, subscribe to the GSA journal, or take a friggin class. I'm not his freshman science professor. Now, somebody answer my earlier question, and this one: What bearing, if any, do any of those questions have on the fact of AGW?
"But it would be amusing if you'd at least try to answer his questions."
Unless, of course, you simply can't.
Did you not see my response #64? That answered at least one of his questions. As for the rest:
What caused the Little Ice Age, and what made it end?
Why are we accepting as a "standard temperature" a temperature that was established in the middle of one of the coldest periods in the last 2,000 years?
What happened to the wet marshlands of North Africa?
What happened to the fertile crescent?
What happened to the large inland wetlands in what is now Death Valley?
These are all academic questions that have answers in many scientific papers, and even College textbooks. I suggest to 'shroom to either buy a textbook, subscribe to the GSA journal, or take a friggin class. I'm not his freshman science professor. Now, somebody answer my earlier question, and this one: What bearing, if any, do any of those questions have on the fact of AGW?
Largely because the only assertion you really have is that present period RATE of warming is "unprecendented". (you don't even aim for the AMOUNT).
There is ample science that needs to be IGNORED to make that statement and more importantly what that implies about this single-minded wild goose chase about CO2 theory..
The 2nd inconsistency is your belief that CO2 forcing will be amplified by factors of 3 to 5. If the MAGnitude of the MWP was comparable (or larger) than today's warming --- where was the amplification and the run-away destruction of the planet that you are jonesing for?
Did you not see my response #64? That answered at least one of his questions. As for the rest:
These are all academic questions that have answers in many scientific papers, and even College textbooks. I suggest to 'shroom to either buy a textbook, subscribe to the GSA journal, or take a friggin class. I'm not his freshman science professor. Now, somebody answer my earlier question, and this one: What bearing, if any, do any of those questions have on the fact of AGW?
Largely because the only assertion you really have is that present period RATE of warming is "unprecendented". (you don't even aim for the AMOUNT).
There is ample science that needs to be IGNORED to make that statement and more importantly what that implies about this single-minded wild goose chase about CO2 theory..
The 2nd inconsistency is your belief that CO2 forcing will be amplified by factors of 3 to 5. If the MAGnitude of the MWP was comparable (or larger) than today's warming --- where was the amplification and the run-away destruction of the planet that you are jonesing for?
Then don't make such a statement. We don't know if it (the rate of increase) is unprecedented in the history of the Earth. It likely is within the last 11,000 years, based on some rather large databases. There is no evidence that temperatures were higher globally during the MWP than they are now. The differences between WMP and AGW are the rate of increase, the extent of the warming, and the cause.
What bearing? Really? What bearing do the historical consequences of climate change have on AGW?"But it would be amusing if you'd at least try to answer his questions."No it is not strictly climatology. But many climatologists are geophysicists. And atmospheric science certainly does fall under the domain of planetary and Earth science, of which geology is the umbrella discipline. You cannot understand paleoenvironments if you don't understand the atmosphere.
Unless, of course, you simply can't.
Did you not see my response #64? That answered at least one of his questions. As for the rest:
What caused the Little Ice Age, and what made it end?
Why are we accepting as a "standard temperature" a temperature that was established in the middle of one of the coldest periods in the last 2,000 years?
What happened to the wet marshlands of North Africa?
What happened to the fertile crescent?
What happened to the large inland wetlands in what is now Death Valley?
These are all academic questions that have answers in many scientific papers, and even College textbooks. I suggest to 'shroom to either buy a textbook, subscribe to the GSA journal, or take a friggin class. I'm not his freshman science professor. Now, somebody answer my earlier question, and this one: What bearing, if any, do any of those questions have on the fact of AGW?
It isn't a prediction. It is an observation based on tons of data from global temperature readings on the ground, air, in the oceans, in space, and by proxy.
So that is what caused the Medieval Climate Optimum! Airplanes!
Don't be obtuse.
http://www.meteo.psu.edu/holocene/public_html/shared/articles/medclimopt.pdf
Thus, current evidence does not support the notion of a Medieval Climatic Optimum as an interval of hemispheric or global warmth comparable to the latter 20th century. Astronomical climate forcing may have contributed to a long-term cooling trend throughout the second millennium that terminated in the 20th century. Increased northward
heat transport by an accelerated Atlantic thermohaline ocean circulation during Medieval times may have warmed the North Atlantic and neighboring regions, causing the warmest temperatures to be evident in Europe and lands neighboring the North Atlantic (albeit at notably varying times within the broader period of AD 900–1300).
A variety of factors thus may have contributed to both the moderate warmth of the Northern Hemisphere and the more sizeable and distinct North Atlantic/European warming
during the early centuries of the second millennium.
Now, you have to ask yourself, if similar conditions found themselves forming in Earth's current climate, over and above the current AGW, what do you think that would look like, and how would the planet's inhabitants cope?
Largely because the only assertion you really have is that present period RATE of warming is "unprecendented". (you don't even aim for the AMOUNT).
There is ample science that needs to be IGNORED to make that statement and more importantly what that implies about this single-minded wild goose chase about CO2 theory..
The 2nd inconsistency is your belief that CO2 forcing will be amplified by factors of 3 to 5. If the MAGnitude of the MWP was comparable (or larger) than today's warming --- where was the amplification and the run-away destruction of the planet that you are jonesing for?
Then don't make such a statement. We don't know if it (the rate of increase) is unprecedented in the history of the Earth. It likely is within the last 11,000 years, based on some rather large databases. There is no evidence that temperatures were higher globally during the MWP than they are now. The differences between WMP and AGW are the rate of increase, the extent of the warming, and the cause.
What do you mean "no evidence" that temperatures were higher globally during the MWP.. I just went thru that since you were here. MAJORITY of WORLD-WIDE studies show responses to MWP warming. And the majority of them claim a larger warming by at least 0.25degC.. Mann et al had to IGNORE all that to declare the MWP not global..
I swear you were reading those threads last week. It was given to Abraham who also claimed he had NEVER SEEN NO evidence...
BTW: what did you do with Abraham?? He came on here within HOURS of your arrival. :LOL:
What bearing? Really? What bearing do the historical consequences of climate change have on AGW?"But it would be amusing if you'd at least try to answer his questions."
Unless, of course, you simply can't.
Did you not see my response #64? That answered at least one of his questions. As for the rest:
What caused the Little Ice Age, and what made it end?
Why are we accepting as a "standard temperature" a temperature that was established in the middle of one of the coldest periods in the last 2,000 years?
What happened to the wet marshlands of North Africa?
What happened to the fertile crescent?
What happened to the large inland wetlands in what is now Death Valley?
These are all academic questions that have answers in many scientific papers, and even College textbooks. I suggest to 'shroom to either buy a textbook, subscribe to the GSA journal, or take a friggin class. I'm not his freshman science professor. Now, somebody answer my earlier question, and this one: What bearing, if any, do any of those questions have on the fact of AGW?
So that is what caused the Medieval Climate Optimum! Airplanes!
Don't be obtuse.
http://www.meteo.psu.edu/holocene/public_html/shared/articles/medclimopt.pdf
Thus, current evidence does not support the notion of a Medieval Climatic Optimum as an interval of hemispheric or global warmth comparable to the latter 20th century. Astronomical climate forcing may have contributed to a long-term cooling trend throughout the second millennium that terminated in the 20th century. Increased northward
heat transport by an accelerated Atlantic thermohaline ocean circulation during Medieval times may have warmed the North Atlantic and neighboring regions, causing the warmest temperatures to be evident in Europe and lands neighboring the North Atlantic (albeit at notably varying times within the broader period of AD 900–1300).
A variety of factors thus may have contributed to both the moderate warmth of the Northern Hemisphere and the more sizeable and distinct North Atlantic/European warming
during the early centuries of the second millennium.
Now, you have to ask yourself, if similar conditions found themselves forming in Earth's current climate, over and above the current AGW, what do you think that would look like, and how would the planet's inhabitants cope?
Nice theory.. Doesn't pan out tho.. I've got a dozen cites of finding the signals of MWPeriod from Venezuela to Japan and Africa.. The cop-out of "it wasn't global" doesn't really fly..
Don't be obtuse.
http://www.meteo.psu.edu/holocene/public_html/shared/articles/medclimopt.pdf
Now, you have to ask yourself, if similar conditions found themselves forming in Earth's current climate, over and above the current AGW, what do you think that would look like, and how would the planet's inhabitants cope?
Nice theory.. Doesn't pan out tho.. I've got a dozen cites of finding the signals of MWPeriod from Venezuela to Japan and Africa.. The cop-out of "it wasn't global" doesn't really fly..
So you wouldn't mind providing us with this bibliography you have of those papers, right?
Nice theory.. Doesn't pan out tho.. I've got a dozen cites of finding the signals of MWPeriod from Venezuela to Japan and Africa.. The cop-out of "it wasn't global" doesn't really fly..
So you wouldn't mind providing us with this bibliography you have of those papers, right?
Poor memory or are you not yet subscribing to follow threads?? Turns out it was YOU and not Abraham that I provided those to just a few days ago..
See http://www.usmessageboard.com/7592351-post14.html
Or post #7 above that for a histogram summary of MWPeriod warming results..
So you wouldn't mind providing us with this bibliography you have of those papers, right?
Poor memory or are you not yet subscribing to follow threads?? Turns out it was YOU and not Abraham that I provided those to just a few days ago..
See http://www.usmessageboard.com/7592351-post14.html
Or post #7 above that for a histogram summary of MWPeriod warming results..
As your quote pointed out:
Their paper was about 'A 2000-year record of Caribbean and tropical North Atlantic temperature/salinity reconstruction'. That's THE CARIBBEAN AND NORTH ATLANTIC, which we already knew experienced the MWP. What about the rest of the planet? This is all you have? Look, I'll give it to you free of charge; there are other samples that have been found, a few in the Southern hemisphere, but like your author says, it's very complicated, and the signals outside of the Atlantic basin aren't strong like they are within the basin itself. Furthermore, nothing you've provide has yet to back up your claim that the MWP was warmer than today. And we certainly know the MWP didn't come on as rapidly.
You're right. Climate change in the past has absolutely NOTHING to do with current climate change.What bearing? Really? What bearing do the historical consequences of climate change have on AGW?Did you not see my response #64? That answered at least one of his questions. As for the rest:
These are all academic questions that have answers in many scientific papers, and even College textbooks. I suggest to 'shroom to either buy a textbook, subscribe to the GSA journal, or take a friggin class. I'm not his freshman science professor. Now, somebody answer my earlier question, and this one: What bearing, if any, do any of those questions have on the fact of AGW?
None of the above has any bearing on the current AGW. You apparently believe they do. So, I suggest you spell out to us exactly how they have any bearing on AGW.