Tree rings provide snapshots of Earth's past climate
By Jessica Stoller-Conrad Adapted from NASA's Climate Kids
If you look out the window, you can tell if it’s rainy or sunny right now, but that doesn’t say very much about your region’s climate—the area’s average weather conditions over a long period of time (30 years or more). However, that big tree in your backyard has been keeping a detailed climate record for decades.
Trees can live for hundreds—and sometimes even thousands—of years. Over this long lifetime, a tree can experience a variety of environmental conditions: wet years, dry years, cold years, hot years, early frosts, forest fires and more.
The map below is the most recent GISS surface analysis from NASA. This map is the absolute bottom line of reality regarding the true state of our warming planet. The extremely radical range of temperature variances is tell tale of the immense and ongoing geoengineering assault on planet earth.