?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F593%2F&rft.title=An+objective+method+to+associate+local+weather+extremes+with+characteristic+circulation+structures&rft.creator=Ziemer%2C+C&rft.creator=Marczyska%2C+K&rft.creator=Szczepanska%2C+A&rft.subject=Environment&rft.subject=Discrete&rft.description=In+this+paper+we+give+methods+to+find+characteristic+circulation+patterns+which+are+connected+to+local+extreme+temperature+anomalies.+Two+data+reduction+techniques+are+applied%3A+Legendre+polynomial+fitting+and+watershedding.+For+polynomial+fitting+a+clear+trend+is+found+with+respect+to+local+temperatures.+However%2C+the+trend+is+not+distinctive+enough+to+give+clear+answers+on+the+type+of+circulation+patterns+belonging+to+local+extremes.+The+main+advantage+of+watershedding+is+that+the+physical+properties+of+the+circulation+patterns+are+retained+while+the+dimension+of+the+data+is+largely+reduced.+Expert+knowledge%2C+however%2C+is+needed+to+model+these+main+features+as+predictors.&rft.date=2009&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F593%2F1%2FWag2.pdf&rft.identifier=++Ziemer%2C+C+and+Marczyska%2C+K+and+Szczepanska%2C+A++(2009)+An+objective+method+to+associate+local+weather+extremes+with+characteristic+circulation+structures.++%5BStudy+Group+Report%5D+++++