The Department of Earth and Atmospheric Sciences at Cornell University is inviting applications for multiple PhD positions starting in Fall 2026. Research areas include climate dynamics, geomorphology, cryosphere, glaciology, physical oceanography, geospace science, volcanology, and remote sensing. Projects span topics such as climate variability, subglacial hydrology, snow compaction on the Greenland Ice Sheet, air-sea interaction, space weather phenomena, and volcano remote sensing for Earth and Venus. Students will have opportunities to work with advanced modeling, statistical analysis, machine learning, laboratory experiments, and field instrumentation. Faculty members seeking PhD students include Prof. Flavio Lehner (climate dynamics), Prof. Tingan Li and Prof. Seth Saltiel (geomorphology/cryosphere), Prof. Riley Culberg (glaciology), Prof. Una Miller (physical oceanography), Prof. David Hysell (geospace science), and Prof. Matt Pritchard (volcanology and remote sensing). Each project offers close mentorship and access to Cornell's interdisciplinary research environment. Applicants should have a strong quantitative background and relevant degree in earth sciences, atmospheric sciences, physics, environmental science, or related fields. Coding experience in Python or similar languages is preferred for some projects. Research experience and interests in the listed areas are desirable. Funding is typically provided for PhD students, including stipend and tuition coverage, but candidates should confirm details with faculty or the graduate school. To apply, contact the relevant faculty member by email with your CV and a brief statement of research experience and interests. Further details on the application process are available at the Cornell Graduate School Admissions page. The application deadline for Fall 2026 is December 28, 2025. For more information, visit the department's website and review the faculty directory and project descriptions. This is an excellent opportunity to join a vibrant research community and contribute to cutting-edge studies in earth and atmospheric sciences.