• DOI:10.1126/SCIENCE.289.5485.1743
• Corpus ID: 37999241

Historical trends in lake and river ice cover in the northern hemisphere

@article{Magnuson2000HistoricalTI,
  title={Historical trends in lake and river ice cover in the northern hemisphere},
  author={Magnuson and Robertson and Benson and Wynne and Livingstone and Arai and Assel and Barry and Card and Kuusisto and Granin and Prowse and Stewart and Vuglinski},
  journal={Science},
  year={2000},
  volume={289 5485},
  pages={
          1743-6
        }
}

• Magnuson, Robertson, +11 authors Vuglinski
• Published 8 September 2000
• Environmental Science, Physics
• Science

Freeze and breakup dates of ice on lakes and rivers provide consistent evidence of later freezing and earlier breakup around the Northern Hemisphere from 1846 to 1995. Over these 150 years, changes in freeze dates averaged 5.8 days per 100 years later, and changes in breakup dates averaged 6.5 days per 100 years earlier; these translate to increasing air temperatures of about 1.2 degrees C per 100 years. Interannual variability in both freeze and breakup dates has increased since 1950. A few longer time series reveal reduced ice cover (a warming trend) beginning as early as the 16th century, with increasing rates of change after about 1850.