January 1, 2015 Journal article Open Access

Scafetta, Nicola; Mazzarella, Adriano

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{
  "DOI": "10.1155/2015/481834", 
  "abstract": "Here we study the Arctic and Antarctic sea-ice area records provided by the National Snow and Ice Data Center (NSIDC). These records reveal an opposite climatic behavior: since 1978 the Arctic sea-ice area index decreased, that is, the region has warmed, while the Antarctic sea-ice area index increased, that is, the region has cooled. During the last 7 years the Arctic sea-ice area has stabilized while the Antarctic sea-ice area has increased at a rate significantly higher than during the previous decades; that is, the sea-ice area of both regions has experienced a positive acceleration. This result is quite robust because it is confirmed by alternative temperature climate indices of the same regions. We also found that a significant 4-5-year natural oscillation characterizes the climate of these sea-ice polar areas. On the contrary, we found that the CMIP5 general circulation models have predicted significant warming in both polar sea regions and failed to reproduce the strong 4-5-year oscillation. Because the CMIP5 GCM simulations are inconsistent with the observations, we suggest that important natural mechanisms of climate change are missing in the models.", 
  "author": [
    {
      "family": "Scafetta, Nicola"
    }, 
    {
      "family": "Mazzarella, Adriano"
    }
  ], 
  "id": "48764", 
  "issued": {
    "date-parts": [
      [
        2015, 
        1, 
        1
      ]
    ]
  }, 
  "language": "eng", 
  "note": "", 
  "title": "The Arctic and Antarctic Sea-Ice Area Index Records versus Measured and Modeled Temperature Data", 
  "type": "article-journal"
}