Replying to: P. W. Thorne Nature 455, doi:10.1038/nature07256; A. N. Grant, S. Bro¨nnimann & ...
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During summer 2007 the Arctic sea-ice shrank to the lowest extent ever observed. The role of the ...
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In 2013, the vast majority of the monitored climate variables reported here maintained trends est...
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Citizens are providing vast amounts of georeferenced data in the form of in situ data collections...
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