BER launches Environmental System Science Program. Visit our new website under construction!

U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights

An Overview of Interactions and Feedbacks between Ice Sheets and the Earth System
Published: May 01, 2018
Posted: May 02, 2019

Tight coupling between ice sheets and the Earth system of critical importance for sea level projections.

The Science
Motivated by the impact of Antarctic and Greenland ice sheet change on future sea level rise, this review article summarizes the state of knowledge of ice sheet/Earth system interactions and feedbacks. It also describes emerging observation and model-based methods that can improve understanding of ice sheet/Earth system interactions and feedbacks.

The Impact
The work will be of large importance to accelerating efforts to build interactions between ice sheets and other Earth system components and forcings into models that are used to project future climate sea level changes in a consistent manner.

Sea level rise from ice sheets depends closely on interactions between ice sheets and the surrounding Earth system. These interactions determine how forcings to the climate system (such as from anthropogenic climate influences) translate to ice sheet change, which in turn impact the surrounding environment. This set of two-way interactions between ice sheets and the Earth system forms the basis for important, yet poorly understood feedback loops. This review article describes the current state of knowledge of ice sheet/Earth system interactions and feedbacks and describes promising observational techniques for better understanding their behavior. It also highlights challenges and opportunities in modeling these interactions and feedbacks using coupled ice sheet/Earth system models, which will ultimately be used to predict future sea level rise caused by ice sheet loss. It particularly focuses on the development of Earth system models that incorporate current understanding of Earth system processes, ice dynamics, and ice sheet/Earth system couplings. The strength and balance of ice sheet/Earth system interactions are markedly different for the two present-day ice sheets: ice sheet/atmosphere interactions are arguably dominant for GrIS (Greenland Ice Sheet), while ice sheet/ocean interactions play a more critical role in AIS change. Internal ice sheet dynamics play an important role in translating ice sheet/Earth system interactions into ice dynamic discharge, for both ice sheets. Careful observation and modeling-driven consideration of the coupled ice sheet/climate system will generate new hypotheses regarding ice sheet/climate interactions, which observations and modeling can subsequently test. This type of consideration requires simultaneously deep expertise in disparate aspects of the coupled Earth system, ranging from ocean eddies to polar cloud radiative properties to ice stream dynamics.

Contacts (BER PM)
Dorothy Koch
Earth and Environmental System Modeling
Department of Energy, Office of Science, Biological and Environmental Research

(PI Contact)
Jeremy G. Fyke
Associated Engineering Group, Ltd.

This research is supported as part of the  Department of Energy, Office of Science, Biological and Environmental Research EESM Energy Exascale Earth System Model project.

Fyke, J.G., O. Sergienko, M. Lofverstrom, S. Price, and J.T.M. Lenaerts, M.  An Overview of Interactions and Feedbacks Between Ice Sheets and the Earth System.  Reviews of Geophysics 56(2) 361-408 (2018). [DOI:10.1029/2018RG000600]

Topic Areas:

  • Research Area: Earth and Environmental Systems Modeling

Division: SC-33.1 Earth and Environmental Sciences Division, BER


BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

Mar 23, 2021
Molecular Connections from Plants to Fungi to Ants
Lipids transfer energy and serve as an inter-kingdom communication tool in leaf-cutter ants&rsqu [more...]

Mar 19, 2021
Microbes Use Ancient Metabolism to Cycle Phosphorus
Microbial cycling of phosphorus through reduction-oxidation reactions is older and more widespre [more...]

Feb 22, 2021
Warming Soil Means Stronger Microbe Networks
Soil warming leads to more complex, larger, and more connected networks of microbes in those soi [more...]

Jan 27, 2021
Labeling the Thale Cress Metabolites
New data pipeline identifies metabolites following heavy isotope labeling.

Analysis [more...]

Aug 31, 2020
Novel Bacterial Clade Reveals Origin of Form I Rubisco

  • All plant biomass is sourced from the carbon-fixing enzyme Rub [more...]

List all highlights (possible long download time)