Ryan Green
Ryan is a graduate student working under primary supervision of Mathis Hain. His research focuses on natural perturbations of the global carbon cycle during the last deglaciation. In doing so, he aims to better understand the relationship between the ocean-land-atmosphere carbon cycling and large changes in atmospheric CO2. To accomplish this research, Ryan is using numerical techniques with CYCLOPS, a high performance carbon cycle model, informed by observation data. Ryan enjoys the the wide variety of skills that we work to develop in the Earth Biogeochemistry Learning Community here at UCSC, ranging from topics such as programming skills to public speaking and networking skills.
Terra Ganey
Terra is a graduate student principally advised by Mathis Hain and co-advised by Adina Paytan. She is interested in the response of marine biogeochemical cycles to climatic changes and perturbations in the geologic carbon cycle. Her research focuses on modeling seawater carbonate chemistry in isolated calcification environments to better understand the mechanisms of biologically mediated calcification. She appreciates the emphasis on inclusivity in the learning community and the opportunity to work with and learn from her peers.
Vinícius Amaral
Vinícius uses inverse modeling methods to estimate rates of particle cycling in the ocean that are difficult to measure directly. He is primarily advised by Phoebe Lam in the Ocean Sciences department at UCSC. As part of the our learning community he is excited about exploring ways to design and write modeling programs that are modular and user-friendly.
Vinícius’ LinkedIn
Maddie is an Earth and Planetary Sciences graduate student co-advised by Adina Paytan and Mathis Hain. Her research aims to improve our understanding of carbon cycling during periods of climate change by studying strontium isotopes in the ocean. Maddie’s current project is focused on Late Quaternary glacial/interglacial cycles; she uses marine barite preserved in ocean sediments to reconstruct seawater stable and radiogenic strontium isotopes over the past ~0.5 million years. By combining novel stable strontium isotopic measurements with ocean box modeling, her work will provide new insight into changes in shallow marine carbonate burial driven by glacial/interglacial sea level fluctuations. Maddie appreciates that the Earth Biogeochemistry Learning Community is an inclusive group for sharing goals and challenges, practicing new skills, and getting to know graduate students working in various biogeochemistry labs.
Maddie’s CV
Jo Holo
Jo is a graduate student working with Jim Zachos and Mathis Hain on problems related to massive Eocene carbon addition to the climate system. She is looking to address these questions through reconstructing and modeling past changes.
Jo’s CV
Gavin Piccione
Gavin is a graduate student in the Earth and Planetary Sciences department working with Terry Blackburn and Mathis Hain. His research focuses on geochemical characterization and modeling of aqueous systems beneath the Antarctic Ice Sheet to reconstruct subglacial conditions through time and to understand how these conditions affect major and trace element mobility.
Gavin’s Google Scholar & GitHub
Gracie Pearsall
Gracie is an Earth and Planetary Sciences graduate student primarily advised by Adina Paytan and co-advised by Mathis Hain. Her research is focused on the carbon budget of coastal wetlands, and she aims to discern the drivers of wetland methane emissions, identify ‘hot spots’ and ‘hot moments’ of methane flux, and develop an upscaled predictive model for wetland methane emission. To that end, she interrogates high-resolution atmospheric and environmental data collected in real time by a network of eddy covariance towers stationed in wetlands across the US using various statistical methods. She has found the Hain Lab Learning Community to be quite friendly and very informative. The meetings are particularly useful for learning tangible skills like Python best practices and how to use Git.
Yan Zhang
Yan’s research focus is on developing and applying multiple geochemical proxies to explore past climate variations and ocean dynamics, specifically the long-term oceanic nitrogen budget, through nitrogen isotope measurements and box modeling. Working under the supervision of Professor Ana Christina Ravelo in the UCSC Ocean Science department Yan is currently exploring nitrogen dynamics back to the Miocene, generating nitrogen isotope records of bulk sediments and bound in foraminifera shells. Yan is advancing her coding skills in our learning community (like launch server, using GitHub, ODE solvers) and draws motivation and encouragement from our meetings. Having opportunity to openly talk among peers about stress, about graduate student life and work pressure was a relieve for all of us, she notes.
Yan’s CV
Xiaodong “Daisy” Zhang
Daisy is a graduate student in the Earth and Planetary Sciences Department working primarily with is Jim Zachos, and I also learn from Mathis Hain on box modeling. Her research interest is focused on intensification of the hydrological cycle, especially how hydrological cycle responded to extreme warming in the western North America during the Paleocene-Eocene-Thermal-Maximum, employing multi-proxy analysis and numerical modeling to constrain regional hydroclimate changes through the PETM. Daisy is glad to be part of this learning community, which provides good resources and inclusive platform for skills improvement and knowledge expansion, and she appreciates all the support given by peers in this community.
Daisy’s CV
Mathis Hain
Mathis is facilitating the Earth System Biogeochemistry learning community because he is looking to learn from anyone that brings a passion for our planet. Yes, he is looking at you to help make the difference, to build deeper understanding. Please consider our community principles and reach out to talk about opportunities.
Mathis’ ORCID, Google Scholar, GitHub