[metmom]

It’s a record of the WEATHER for a particular year, not the climate.

[Red Badger]

“Climate is what you expect. Weather is what you get.”...Robert Heinlein..........

[woodbutcher1963]

Correct, this is not like the Greenland ice samples that go back 10000+ years showing the temperature differences over the millennium(s).

[woodbutcher1963]

A 150 year old tree is a snapshot of the annual weather over its relatively short life.

It would be more relavant IF they did this with some of the Bristle Cone pine trees that are thousands of years old.

from the google:

“The oldest bristlecone pine tree in the world, Methuselah, is located in the White Mountains of Inyo National Forest in eastern California. The tree’s exact location is kept secret to protect it from vandalism.
Explanation

Age
Methuselah is estimated to be over 4,856 years old. Its age was determined by measuring core samples taken in 1957.
Location
Methuselah is located in a remote area between the Sierra Nevada range and the Nevada border.”

[woodbutcher1963]

It would be interesting to see if the eruption of that big volcano in the 1800s corresponded with a annual ring that was much smaller than normal. Now, that is REAL climate change.

[Sacajaweau]

Agree...Climate is defined by latitudes on the world globe.

When was the first time it was defined that way? I'll have to look it up.