@misc{indiciaea9f61700749e,
  title = {Observed variations in U.S. frost timing linked to atmospheric circulation patterns},
  author = {Courtenay Strong and Gregory J. McCabe},
  year = {2017},
  doi = {10.1038/ncomms15307},
  url = {https://pubs.usgs.gov/publication/70189892},
  note = {Source identifier: 70189892}
}