Full footbridge over ice caps helps fight sea level rise

GHub’s crevice detection workflow used high-performance computing resources at the State University of New York at the Buffalo Computing Research Center to run a detection algorithm on data from the IceBridge Airborne Topographic Mapper (ATM ) from NASA with user-selected settings. The upper pane displays the raw ATM data, the middle pane displays the meshed anomalies, and the lower pane displays the characteristics of the crevices identified by the algorithm. These crevasses affect the flow of the Greenland ice sheet into the ocean. Credit: Renette Jones-Ivey, Kristin Poinar, Alek Petty.

Researchers at the State University of New York at Buffalo (UB) recently teamed up with colleagues at NASA Goddard Space Flight Center, NASA Jet Propulsion Laboratory and Tufts University to publish a special article titled Build a glaciological bridge to unify a community in the Competition and calculation newspaper. The article provides detailed information about the Glaciology Hub known as GHub science gateway, which is powered by the HUBzero® San Diego Supercomputer Center Platform (SDSC), located at UC San Diego.

“We are happy to help the GHub team achieve their goals, especially given the critical nature and societal importance of melting ice caps,” said Michael Zentner, director of HUBzero, who is also director and principal investigator (PI) of the scientific gateways community. Institute and Director of Sustainable Scientific Software at SDSC. “The multidisciplinary nature of ice cap science is an ideal case of what the HUBzero platform is designed to support. “

As Kristin Poinar, co-PI at GHub, professor of geology at UB, explains, “sea level rise is a serious concern, which makes melting ice an important area of ​​study. The Greenland ice sheet in particular is melting and calving the ice at an alarming rate, the equivalent of all the water in Lake Erie every two years. This has caused global sea level to rise by more than a centimeter over the past 20 years. “

According to lead author Jeanette Sperhac, science programmer at UB and also co-PI on the project, “GHub is a collaboration and analysis space for ice cap scientists that hosts data sets and modeling workflows. , giving access to the codes which allow the creation of tools “.

The workflows mentioned by Sperhac allow for rapid data analysis, validation of the ice sheet model and quantification of uncertainty, which helps scientists more fully catalog the Greenland and Antarctic ice sheets and their evolution. The information is not only used by researchers but also by educational communities, policy makers and the general public.

“Predicting future changes in the ice sheet requires considerable effort across a range of disciplines of ice sheet science, including expertise in observational data, paleo-glaciological (‘paleo’) data, modeling ice cap digitalization and the widespread use of emerging methodologies to learn from data, such as machine learning, ”said Sperhac. “Fostering collaboration between disciplines helped us create GHub and we are grateful to the HUBzero team for helping to make it happen. “

“A major bottleneck is slowing progress in understanding ice caps and sea level rise – it is linked to a lack of open communication and accessibility of knowledge between the wide range of scientific communities involved “continued PI Jason Briner, professor of geology at UB. “GHub is designed to reduce this bottleneck. “

To date, the team has developed eight calculation tools and hosts the scientific ice modeling intercomparison projects (ISMIP6), totaling seven terabytes. With more than 75 researchers already using GHub data to conduct their studies, the GHub team is now working with these users to integrate additional tools with crucial data sets stored in locations such as the National Snow and Ice Data Center.

Funding for the GHub was provided by the National Science Foundation (2004).

About SDSC

The San Diego Supercomputer Center (SDSC) is a leader and pioneer in high-performance, data-intensive computing, providing cyberinfrastructure resources, services and expertise to the national research community, universities and the international community. ‘industry. Located on the UC San Diego campus, the SDSC supports hundreds of multidisciplinary programs spanning a wide variety of fields, from astrophysics and earth sciences to disease research and drug discovery. The newest SDSC supercomputer funded by the National Science Foundation, Scope, supports the “Computing Without Borders” SDSC theme with data-centric architecture, public cloud integration, and state-of-the-art GPUs to incorporate experimental facilities and state-of-the-art computing.

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