- Title Information
- Title
- Interaction between the Andes and the Climate System, and Wave Studies
- Type of Resource (primo)
- dissertations
- Name:
Personal
- Name Part
- Xu, Weixuan
- Role
- Role Term:
Text
- creator
- Name:
Personal
- Name Part
- Lee, Jung-Eun
- Role
- Role Term:
Text
- Advisor
- Name:
Personal
- Name Part
- Fox-Kemper, Baylor
- Role
- Role Term:
Text
- Advisor
- Name:
Personal
- Name Part
- Marston, Brad
- Role
- Role Term:
Text
- Reader
- Name:
Personal
- Name Part
- Tsai, Victor
- Role
- Role Term:
Text
- Reader
- Name:
Personal
- Name Part
- McPhaden, Michael
- Role
- Role Term:
Text
- Reader
- Name:
Corporate
- Name Part
- Brown University. Department of Earth, Environmental, and Planetary Sciences
- Role
- Role Term:
Text
- sponsor
- Origin Information
- Copyright Date
- 2023
- Physical Description
- Extent
- xv, 132 p.
- digitalOrigin
- born digital
- Note:
thesis
- Thesis (Ph. D.)--Brown University, 2023
- Genre (aat)
- theses
- Abstract
- We used global climate models to study the interaction between the Andes and the climate system. We found that the errors in the tropical Pacific climate simulation might be related to the incorrect representation of the Andes in the low-resolution global climate models. We adjusted the height of the Andes to the maximum height instead of the average height and ran the Higher Andes versus Default experiments. In a slab ocean model, we found that the Higher Andes experiment can more effectively adjust the mid-latitude westerly wind and form a stronger equatorward circulation. As a result of the evaporative cooling and radiative cooling, the eastern tropical Pacific Sea Surface Temperature (SST) gets lower and precipitation gets inhibited over the South Pacific, leading to a more accurate simulation for the mean state climate. As a follow up, we ran these two experiments in the fully-coupled model to study the ENSO variations. The results show that the Higher Andes setting can reduce the amplitude of ENSO as well as producing a more irregular and asymmetric cycle. The Andes also influences the land precipitations. We used a higher resolution global model and showed that without the Andes, the moisture flux from the Amazon forest can not be directed to the La Plata basin, and the severe storms on La Plata basin no longer exist. Lastly, we carried out a related side project about using topology to study climate waves. Using reanalysis data, we proved the existence of non-trivial topology in Poincar ́e waves by finding a vortex / antivorex pattern in the wavevector space, which is consistent with the theoretical simulations.
- Subject
- Topic
- Climate modeling
- Subject (fast)
(authorityURI="http://id.worldcat.org/fast", valueURI="http://id.worldcat.org/fast/01243836")
- Topic
- Pacific Ocean--El Niño Current
- Subject (fast)
(authorityURI="http://id.worldcat.org/fast", valueURI="http://id.worldcat.org/fast/01043612")
- Topic
- Ocean-atmosphere interaction
- Subject (fast)
(authorityURI="http://id.worldcat.org/fast", valueURI="http://id.worldcat.org/fast/00820394")
- Topic
- Atmospheric circulation
- Language
- Language Term (ISO639-2B)
- English
- Record Information
- Record Content Source (marcorg)
- RPB
- Record Creation Date
(encoding="iso8601")
- 20230207