2026-09-22T21:46:39Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/89264 2023-07-11 col_2142_14839 col_2142_5131 com_2142_14838 com_2142_13459 com_2142_8903 com_2142_5130

The student, Zachary Zobel, submitted this Thesis for approval on 2015-07-15 at 22:36. This Thesis was approved for publication on 2015-07-17 at 10:52. DSpace SAF Submission Ingestion Package generated from Vireo submission #8492 on 2016-03-08 at 11:04:51 Made available in DSpace on 2016-03-08T17:20:50Z (GMT). No. of bitstreams: 2 ZOBEL-THESIS-2015.pdf: 1170999 bytes, checksum: d52a9d8904f92b9d9dcaa213373217e9 (MD5) LICENSE.txt: 4210 bytes, checksum: fec2a476ebc09ad6007f54a336213aa2 (MD5) Previous issue date: 2015-07-17 Wuebbles, Donald Zobel, Zachary T 2016-03-08T17:20:50Z 2016-03-08T17:20:50Z 2018-03-09T10:15:26Z 2015-07-17 2015-12 New evidence is presented to show that decreasing sea ice in the Arctic is causing an increased amplification of the jet stream off the west coast of the United States. We find a statistically significant relationship between sea ice north of Alaska and geopotential height anomalies during the following winter and spring months. We also show that these semi-persistent height anomalies are increasing in frequency in these locations independent of long term ocean cycles, such as ENSO and PDO. These height anomalies cause more persistent precipitation patterns to certain regions of the United States and we discuss these teleconnections as well as their impacts. These results suggest that as the Arctic, specifically the region north of Alaska, continues to decrease in sea ice coverage a more persistent ridge will form in areas adjacent to this location and affect storm track to the continental United States. Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2017-12-01 The student, Zachary Zobel, accepted the attached license on 2015-07-15 at 22:20. Embargo set by: Seth Robbins for item 91475 Lift date: 2018-03-08T17:22:13Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system U of I Only Restriction Lifted for Item 91475 on 2018-03-09T10:15:26Z. application/pdf http://hdl.handle.net/2142/89264 en Copyright 2015 Zachary Zobel jet stream amplification Investigating the link between Arctic sea ice, North Pacific geopotential height anomalies, and precipitation across the United States text text Atmospheric Sciences Atmospheric Sciences University of Illinois at Urbana-Champaign Thesis M.S.