Aurora
Aurora is our weekly newsletter aimed at faculty, staff, and students of the department.
Aurora is our weekly newsletter aimed at faculty, staff, and students of the department.
Applications are invited for the following positions:
Full details and application information are available here.
Postdoctoral Researcher: Southern Ocean carbon export fluxes estimated from space
Position Summary: The transfer of carbon from the surface to the deep ocean largely occurs through the sinking of particulate matter. However, in certain locations, strong vertical ocean currents also carry organic carbon away from the surface, a process known as the ocean’s mixing pump. Estimates suggest that the mixing pump accounts for up to 50% of the total carbon export from the surface in energetic regions, like the Southern Ocean.
This project will leverage data collected from NASA’s SWOT and PACE satellite missions to study the Southern Ocean mixing pump. The SWOT mission provides sea surface height measurements at kilometer-scale resolution with opportunities to estimate vertical ocean velocities. The PACE mission measures the intensity of light at fine resolution (5 nm), which permits an assessment of community composition and its evolution over a seasonal cycle.
This project aims to produce a quantitative, large-scale assessment of the mixing component of the ocean’s biological pump in the Southern Ocean. The study will evaluate the ocean features and physical processes that shape the mixing pump to understand future changes to this component of total carbon export. This is a collaborative project between Caltech and the Scripps Institution of Oceanography, with opportunities to work with Andy Thompson, Christen Frankenburg, Lia Siegelman, and other faculty at both institutions.
Minimum qualifications:
Preferred qualifications:
Timeline and application: This is a 2-year postdoctoral position (with initial appointment for 1 year with a second year pending good progress). The position will remain open until filled, although a start in summer or early fall 2026 is preferred.
To apply please submit a cover letter (explaining interest and relevant qualifications), CV (including list of publications), and contact information for up to three references by email to Andy Thompson (andrewt@caltech.edu). References will only be contacted for shortlisted candidates. A Group Resources and Expectations Guide is provided at here. Questions about the
project may be directed to Andy Thompson (andrew@caltech.edu) or Lia Siegelman (lsiegelman@ucsd.edu).
IDEAthon 2026: (Re)Imagine Spaces is a free, interdisciplinary design competition where undergraduate students collaborate to reimagine a prominent campus public space — Flagpole Plaza near the Rose Garden.
Event details:
What students will do:
Students can sign up as a team or individually (we’ll match individuals into teams). Registration is now open.
We invite you to join us online on May 7 for “Critical Minerals, Critical Responsibilities,” a timely webinar as part of the RSC College Webinar Series. Speakers will explore how Canada's mining sector can meet rising demand while advancing sustainable and equitable practices.
Speakers:
Moderator:
The webinar will include short presentations, a moderated discussion, and audience Q&A, providing space for engagement and dialogue.
The 2026 Advanced Climate Dynamics Courses (ACDC) summer school on Landscapes and Climate will be happening this summer at the Abisko Scientific Research Station in Abisko, Sweden, from Aug 16-29. Applications are due April 15th.
Climate and Landscapes
We will explore how the climates of the past and present are shaped by the distribution of the continents, oceans, orography (land topography), and ice sheets. We will also explore the relationship between the climate and vegetation, focusing on selected warm periods of the past (e.g., the Eocene and Pliocene). Special consideration will be given to the impact humans have had on climate throughout the Holocene due to land-use change through deforestation and the expansion of farming, and current plans for afforestation in support of carbon capture. Finally, we will examine the relationship between the evolution of life and climate over Earth’s history. More information and a link to the application are found here.
Summer school activities are a combination of classroom-based lectures, group research projects, short and long field trips (including a weekend backpacking trip, weather permitting), and ample free time to connect with other students and faculty, and to explore the incredible Abisko National Park.
The school is targeted towards advanced graduate students. Students should have a strong grounding (i.e. completed graduate coursework) in climate dynamics or related fields. More information and the link to the application form is available at the website above, or feel free to reach out to me or any of the other organizers with questions. Students with a research focus on field studies, observations, remote sensing, theory, modelling, etc. are all encouraged to apply!