HR: 1400h
AN: A23B-02    [Abstracts]
TI: East Pacific Tropical Cyclogenesis: Differences Between Developing and Non-developing Disturbances and Contrasts With the Atlantic.
AU: * Kerns, B W
EM: bkerns@met.utah.edu
AF: University of Utah, Department of Meteorology 135 S 1460 E, Rm 819, Salt Lake City, UT 84112, United States
AU: Greene, K M
EM: leyon@met.utah.edu
AF: Jackson State University, 1400 Lynch St, Jackson, MS 39217, United States
AU: Zipser, E J
EM: ezipser@met.utah.edu
AF: University of Utah, Department of Meteorology 135 S 1460 E, Rm 819, Salt Lake City, UT 84112, United States
AU: Liu, C
EM: liuct@met.utah.edu
AF: University of Utah, Department of Meteorology 135 S 1460 E, Rm 819, Salt Lake City, UT 84112, United States
AB: The eastern North Pacific basin (EPAC) is the world's most concentrated tropical cyclogenesis region and is an ideal location for studying tropical cyclogenesis. A database of 116 developing (DEV) and 614 non-developing (NOD) disturbance tracks has been derived from ERA-40 Reanalysis for the EPAC and north Atlantic for May to October, 1998-2001. The relative vorticity, daily genesis parameter, vertical wind shear, and temperature and moisture anomalies are calculated from ERA-40 for each disturbance. The area of low cloud top temperature is calculated from ISCCP. The maximum rain rate, raining area, and area of heavy rain rates in the vicinity of each disturbance are derived from the 3B42 dataset, and the 85 GHz polarization corrected temperature (PCT) from the Special Sensor Microwave Imager (SSMI) is used as a measure of ice production and intensity of convective systems near the disturbance center. Statistically significant differences in several variables are presented for EPAC NOD versus DEV systems, and contrasts are made with with the corresponding statistics for the Atlantic NOD and DEV disturbances.
DE: 3309 Climatology (1616, 1620, 3305, 4215, 8408)
DE: 3360 Remote sensing
DE: 3374 Tropical meteorology
SC: Atmospheric Sciences [A]
MN: 2007 Joint Assembly