University of Arizona Tree Ring Data
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https://cmr.earthdata.nasa.gov/search/concepts/C1214055066-SCIOPS.html
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资源简介：
One hundred tree ring chronologies were provided by the University of Arizona. The individual chronology lengths vary widely, with the longest one extending from year 1 to 1972. Chronologies generally end in the late 1960s or early 1970s.
提供机构：
SCIOPS
