HR: 1340h
AN: A13E-1609    [Abstracts]
TI: Using Normalized Anomalies to classify extratropical/tropical interactions
AU: * Maue, R N
EM: rmaue@met.fsu.edu
AF: Florida State University, Room 404 Love Building 1017 Academic Way PO Box 3064520, Tallahassee, FL 32306-4520,
AU: Hart, R
EM: rhart@met.fsu.edu
AF: Florida State University, Room 404 Love Building 1017 Academic Way PO Box 3064520, Tallahassee, FL 32306-4520,
AB: A climatology of extreme events within a normalized anomaly framework is presented using current atmospheric reanalysis products. Based upon a long-term mean (30 years), these normalized anomalies provide a meaningful analysis of phenomena that is unusual for a given space and time. For instance, tropical cyclones undergoing extratropical transition introduce considerable geopotential height perturbations on the midlatitude background flow. Likewise, cut-off lows formed from wave-breaking processes introduce poleward originating air into the tropics. Many of these highly anomalous events are associated with sensible weather and climate events on a variety of scales, which may have significant impact upon society. This normalized anomaly method is applied to a selection from the IPCC climate model ensemble to highlight the frequency and magnitude of extratropical/tropical interactions in a warming world.
UR: http://www.coaps.fsu.edu/~maue/extreme/
DE: 1616 Climate variability (1635, 3305, 3309, 4215, 4513)
DE: 3337 Global climate models (1626, 4928)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting