It has recently been shown that weather radars can be used to monitor bird migration for single r...
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In this paper we study 15-year long time series of the Absorbing Aerosol Index (AAI) for a select...
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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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