Observed Trends and Teleconnections of the Siberian High ...
Question Correlations Conclusions · Scale-dependent relationships between U.S. temperatures and...
Transcript of Question Correlations Conclusions · Scale-dependent relationships between U.S. temperatures and...
Scale-dependentrelationshipsbetweenU.S.temperaturesandteleconnectionsCarlSchreck1,JaredRennie1,LanceWatkins2,3,KellyDobeck2,4,andDerekPodowitz2,5
1CooperativeInstituteforClimateandSatellites– NorthCarolina(CICS-NC), 2NASA/NOAADEVELOP,3ArizonaStateUniversity,4UniversityofNorthCarolinaAsheville,5FleetNumericalMeteorologyandOceanographyCenter
4th MJOSymposium10–14January2016,NewOrleans,LA
NOAA’sClimateDataRecordProgramPoster#851
[email protected] pdf ofthisposter
Correlations
Rankings
Question
WhichteleconnectionshavethestrongestassociationwithU.S.temperaturesatdifferenttimescales?
Data&Methodology
TemperatureData• GHCN-dailydataaggregatedtoclimatedivisions
andthentostates• NCEIU.S.Normals usedtoproducedaily
anomalies
TimeScales• 5-dayrunningaverage(pentads)toeliminate
day-to-dayvariability• 100-daylowpass filteridentifiesseasonalsignals• 100-dayhighpass filteridentifiessubseasonal
signals
Teleconnections• EPO:EastPacificOscillation• MVP:MultivariatePacificNorthAmerican(PNA)• AO: ArcticOscillation• ONI:OceanicNiñoIndex• RMM1/2:Real-timeMultivariateMadden–Julian
Oscillation(MJO)
Conclusions
• EPOdominatestotalandsubseasonal
• MVP/PNAisamajorplayeratalltimescales
• AOisprimarilylow-frequency
• MJObeatsoutAOatsubseasonal scales