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t - Regional Climate Group

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Statistical downscaling:<br />

Reproduction of variance<br />

• underestimated variance in downscaled data<br />

• two ways of reproduction of variance<br />

– inflation (enhancement of anomalies by a<br />

constant factor)<br />

• physically questionable all forcing comes<br />

from large-scales<br />

– adding noise<br />

• white noise<br />

• regression residuals<br />

• noise with pre-specified statistical<br />

characteristics<br />

Göteborg University http://www.gvc2.gu.se/rcg <strong>Regional</strong> <strong>Climate</strong> <strong>Group</strong><br />

7

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