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Full-Text Articles in Physical Sciences and Mathematics
Biennial And Low-Frequency Components Of El Niño/Southern Oscillation, James Michael Ryan
Biennial And Low-Frequency Components Of El Niño/Southern Oscillation, James Michael Ryan
Theses and Dissertations
El Niño/Southern Oscillation (ENSO) is a coupled oscillation of sea surface temperatures (SSTs), winds, and air pressure in the eastern and central tropical Pacific, that repeats with quasi-regularity, every 2–7 years. Although the ENSO’s spectral peak is found at a 4–7-yr period, composite El Niño events, taken as the 84 months before and after the peak of each El Niño, show that the length of each event, and often the following La Niña if there is one, usually falls within a quasi-biennial (QB) range of around 18–42 months. We argue that the biennial range of ENSO events stems from the …
Southwest Pacific Tropical Cyclone Frequency And Intensity Related To Observed And Modeled Geophysical And Aerosol Variables, Rupsa Bhowmick
Southwest Pacific Tropical Cyclone Frequency And Intensity Related To Observed And Modeled Geophysical And Aerosol Variables, Rupsa Bhowmick
LSU Doctoral Dissertations
The dissertation focuses on western region of Southwest Pacific Ocean (SWPO)
basin (135E - 180, and 5S - 35S) tropical cyclone (TC) climatology using observed
and modeled data. The classification-based machine learning approach
identifies the synoptic geophysical and aerosol environment favorable or unfavorable
for TC intensification and intensity change prior to landfall incorporating
observational and satellite data. A multiple poisson regression model with varying
temporal monthly lags was used to build a relationship between the number of
monthly TC days with basin wide average dust aerosol optical depth (AOD), sea
surface temperature (SST), and upper ocean temperature (UOT). This idea …