All data in the World Data Center for Paleoclimatology archive are contributed by research scientists. Contributors and references are available in readme or data file headers. Here is a Sample Data Citation.
The NOAA Paleoclimatology Program distributes archives of phenology data - plant developmental stages such as first leaf and first bloom dates, or fruit maturation dates. Monitoring of growing season changes may provide insight into ecosystem responses to global climate change.Join Nature's Notebook to contribute phenology data
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Please see the Paleoclimatology Contact Page or the NCDC Contact Page if you have questions or comments.