Title :
The atmospheric processes associated with the tornadic super-outbreak of April 25th through 28th 2011 in relation to global change
Author :
Abdullah, Warith F. ; Reddy, Remata S. ; Walters, Wilbur ; Heydari, Ezat
Author_Institution :
Dept. of Phys., Jackson State Univ., Jackson, MS, USA
Abstract :
A large and violent super-tornado outbreak occurred from April 25th - 28th, 2011, becoming the deadliest 24-hour outbreak in U.S history. According NOAA and the SPC, there were approximately 190 tornadoes reported with 320 deaths within the southern, mid-western and northeastern U.S. In the current study, Arctic sea ice loss affecting the North Atlantic Oscillation, a negative ENSO episode, Gulf of Mexico Sea Surface Temperatures (SST´s) and an unusual shift of dry-line associated with parent mid-latitude cyclone (MCL) are potentially influenced by global change in association with the outbreak and studied using NCEP/NCAR reanalysis, GFS modeling, NCEP/CPC CAMS & NOAA/ESRL/PSD NOAA/AOML/TCHP analysis, and stability parameters obtained from remote sensing. Larger implications state the Arctic sea ice lost reversed upper-level wind distribution and affected major wind systems such as the jet stream. Reduced albedo in the arctic increased solar insolation and shifted the temperature differential between latitudes, potentially perturbing Earth´s feedback system.
Keywords :
El Nino Southern Oscillation; ocean temperature; remote sensing; sea ice; storms; AD 2011 04 25 to 28; Arctic sea ice loss; GFS modeling; Gulf of Mexico Sea Surface Temperature; NCEP CPC CAMS; NCEP NCAR reanalysis; NOAA-ESRL-PSD NOAA-AOML-TCHP analysis; North Atlantic Oscillation; SPC; US history; atmospheric process; global change; negative ENSO episode; remote sensing; stability parameter; tornadic superoutbreak; Decision support systems;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350350