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oai:www.ideals.illinois.edu:2142/85967 2023-07-11 col_2142_5131 col_2142_14839 com_2142_5130 com_2142_14838 com_2142_13459 com_2142_8903

Mak, Mankin Deng, Yi 2015-09-28T14:52:21Z 2015-09-28T14:52:21Z 10000-01-01 2005 2005 "In NH winter, the Pacific storm track tends to reach its maximum intensity during early and late winter, leaving a distinct minimum in January, which is known as ""midwinter minimum"" (MWMIN) of the Pacific storm track. The main objective of this study is to explain the origin of MWMIN from the perspective of dry dynamics. Diagnosing 40-year NCEP/NCAR reanalysis data, we examined the frequency of occurrence of MWMIN and the structural features in the planetary-scale flow associated with MWMIN. The results suggest a hypothesis that a significant enhancement of the barotropic damping relative to the baroclinic growth from early to midwinter is an important contributing factor for MWMIN. This hypothesis is tested with both an idealized quasi-geostrophic two-level model and a relatively realistic primitive equation model. The model results are compared against observations from the perspective of eddy energetics. Remaining questions and their implications are discussed." Made available in DSpace on 2015-09-28T14:52:21Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3198967.pdf: 3245793 bytes, checksum: d5d1acc2ca2228128874cf8b583cd139 (MD5) Previous issue date: 2005 Embargo set by: Seth Robbins for item 87248 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 114 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2005. http://hdl.handle.net/2142/85967 (MiAaPQ)AAI3198967 eng Physics, Atmospheric Science A Diagnostic and Dynamical Study of the Midwinter Minimum of the Pacific Storm Track text Atmospheric Sciences Atmospheric Sciences University of Illinois at Urbana-Champaign Dissertation Ph.D.