Sentences with phrase «historical sea ice record»

Tagged adaptation, declining sea ice, early breakup, evolution, historical sea ice record, indivdual variation, late freeze - up, natural selection, NSIDC, polar bear, resilience, sea ice minimum, sea ice variability, Stirling, Stroeve, survival, western hudson bay

We could ask them to explain the change they made to the historical sea ice records in March 2007 (which contributed significantly to the record low sea ice area numbers in 2007).

Not exact matches

Second, the rate of sea ice retreat in recent years is also unprecedented in the historical record.

January 2017 had the lowest levels of sea ice on historical record, and according to NASA, the ice is receding at a rate of 13.8 percent every decade.

«Anecdotal data» is the term that climate scientists (IPCC, etc.) assign to what tony b calls «historical evidence» This can be old sea charts, notes by explorers, crop records, old chronicals of mines being covered by advancing ice and snow, etc..

Polyak et al. (2010) looked at Arctic sea ice changes throughout geologic history and noted that the current rate of loss appears to be more rapid than natural variability can account for in the historical record.

Cook's documents from 1778 and 1779 provide the earliest historical record of the summer sea - ice edge in the Chukchi Ssea - ice edge in the Chukchi SeaSea.

Going back even farther, I. V. Polyakov and others examined Russian historical records of Arctic sea ice extent and thickness starting from the year 1900.

The prediction is initialised with the mean of the observed sea ice extent for September 2009 - 2013 and an ensemble prediction is created simply by adding all of the observed changes in the sea ice extent record from one September to the next over the historical period 1979 - 2013.

However, scientists have used historical records of sea ice conditions to estimate sea ice extent before 1979.

Typically, sea ice models are based on the historical records dating back to 1979, the beginning of the satellite era.