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T. R. Karl
References
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lilac bud break, humidity, and temperature
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T. R. Karl

American climatologist
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Learn about this topic in these articles:

  • climate
    / Biosphere controls on minimum temperatures

    Schwartz and T.R. Karl used the superimposed epoch method to study the climate before and after the leafing out of lilac plants in the spring in the U.S. Midwest. (This method uses time series data from multiple locations, which can be compared to one another by adjusting…

    Read More

    Schwartz and T.R. Karl used the superimposed epoch method to study the climate before and after the leafing out of lilac plants in the spring in the U.S. Midwest. (This method uses time series data from multiple locations, which can be compared to one another by adjusting…

    Read More