2026-09-19T10:25:15Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/130039 2026-02-10 col_2142_5131 col_2142_14839 com_2142_5130 com_2142_14838 com_2142_13459 com_2142_8903

application/pdf en text Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01 The student, Rachel Tam, accepted the attached license on 2025-07-13 at 11:41. The student, Rachel Tam, submitted this Thesis for approval on 2025-07-13 at 11:46. This Thesis was approved for publication on 2025-07-14 at 11:51. DSpace SAF Submission Ingestion Package generated from Vireo submission #22534 on 2025-10-21 at 10:06:03 Meteorological drivers of the low cloud radiative feedback pattern effect and its uncertainty Tam, Rachel Yuen Sum 2025-07-14 Proistosescu, Cristian Climate Low-cloud Radiative Feedback Pattern Effect eng The radiative feedback pattern effect remains a large source of uncertainty for both projections of future trends and interpretations of past trends in global temperature. The pattern effect is defined as the difference in feedbacks between transient and long-term simulations, and past work shows that is primarily attributed to changes in the marine low-cloud radiative feedback. In this thesis, we use low cloud meteorological kernels to map out both the primary cloud controlling factors through which changing surface temperature patterns drive changes in low cloud feedback, as well as the sources of model spread. We find that the pattern effect is almost entirely driven by changes in EIS in the Southern Hemisphere, particularly in the South East Pacific and Southern Ocean. In both past and future simulations, inter-model spread is primarily caused by model differences in the sensitivity of low clouds to the environmental conditions, rather than differences in the simulated evolution of environmental conditions. 2025-08 Text https://hdl.handle.net/2142/130039 Copyright 2025 Rachel Tam Climate Meteorology & Atm Sci Atmospheric Sciences University of Illinois Urbana-Champaign M.S. Thesis