Lawrence Livermore National Laboratory

Integrating atmospheric, earth, and energy sciences in support of defense and global security

Division Leader: Tarabay Antoun
Deputy Division Leader, Operations: Tom Brown
Deputy Division Leader, Science & Technology: Susan Carroll
Division Administrator:  Brytni Soto   +1-925-422-4238

The Atmospheric, Earth, and Energy Division (AEED) supports the Laboratory's defense, global security, and fundamental science programs by conducting research and development in the areas of atmospheric, earth, and energy sciences. The division supports the Center for Accelerator Mass Spectrometry (CAMS) at LLNL, which specializes in measuring ultralow concentrations of long-lived radioisotopes. AEED also supports the programs in energy and environmental security, nonproliferation, and the National Atmospheric Release Advisory Center (NARAC) and the DHS Inter-Agency Modeling and Atmospheric Assessment Center (IMAAC).

Atmospheric Flow, Transport & Hazard Assessment Group

Group Leader (Acting):  Brenda Pobanz

The Atmospheric Flow, Transport and Hazard Assessment Group applies atmospheric flow and transport modeling to national security and public protection. It is composed of scientists with a range of backgrounds from atmospheric science, chemistry, engineering and physics. This group is focused on both research and application of multi-scale transport and diffusion, particle physics, nuclear fallout and effects, event reconstruction and emergency response.

Center for Accelerator Mass Spectrometry 

Group Leader:  Ted Ognibene

AEED supports the Center for Accelerator Mass Spectrometry  (CAMS) staff. CAMS is a signature facility of LLNL that uses diverse analytical techniques and state of the art instrumentation, to develop and apply unique, ultra-sensitive isotope ratio measurement and ion beam analytical techniques to address a broad spectrum of scientific needs important to the Laboratory and the nation. CAMS hosts a 10-MV FN tandem Van de Graaff accelerator, a NEC 1-MV tandem accelerator and a recently commissioned 250KV single stage AMS deck to perform up to 25,000 AMS measurement per year, as well as a NEC 1.7-MV tandem accelerator for ion beam analysis and microscopy. CAMS activities have broad ranging scientific impact while contributing to LLNL mission needs.

Climate Modeling & Analysis Group (CliMA)

Group Leader:  Philip Cameron-Smith

The Climate Modeling & Analysis group (CliMA) brings together expertise in climate model development with systems and data analysis. We provide scientific expertise to the Program for Climate Model Diagnosis and Intercomparison  (PCMDI), which leads international modeling activities that provide a multi-model perspective of the climate system, that then enables our scientists to evaluate models from a number of perspectives and determine to what extent observed changes in climate can be attributed to specific causes. We engage directly in the development of climate models, with particular expertise in atmospheric chemistry, aerosols, tracer transport, and their interaction with other parts of the Earth system (eg, the biosphere and humans). We also develop inversion methods to determine the source of various atmospheric emissions.

Cloud Processes Research and Modeling Group

Group Leader:  Shaocheng Xie

LLNL’s Cloud Processes Research and Modeling Group is a recognized leader that performs basic research into cloud processes with major activities including their diagnosis with observations, their parameterization and evaluation in climate models, and their response to climate change. The Cloud Processes Research and Modeling Group is closely connected with the Program for Climate Model Diagnosis and Intercomparison , a world leader in the diagnosis of climate models, and the Atmospheric Radiation Measurement (ARM) program that provides novel ground-based observations of clouds and related processes. Among the many research activities in the group are the following:

  • integrated observation-modeling test-beds and tools for climate model development and evaluation
  • model parameterizations to support Accelerated Climate Modeling for Energy (ACME)
  • research on cloud feedbacks
  • cloud and aerosol processes and their interactions with ground-based and satellite observations
  • advanced data analysis approaches to analyze ARM data and quantify its uncertainties

Computational Geosciences Group

Group Leader:  Joe Morris

The Computational Geosciences group develops and employs cutting-edge software to tackle challenging problems that require understanding and exploiting subsurface processes. A common theme in our work is the employment of novel algorithms on the world's fastest super computers in order to deliver high-fidelity three-dimensional predictions that include a wide range of coupled physical effects. Our projects support a wide range of applications from energy to defense with national and worldwide significance. Examples include: i) risk assessment and optimization of resource extraction, ii) prediction of the effects of underground explosions, iii) constitutive model development for granular materials and jointed rock.

Energy Group

Group Leader (acting):  A. J. Simon

The Group focuses on energy systems research including recent efforts in wind energy, the water/energy nexus, and nuclear risk analysis. Scientists and engineers in the group tackle a diverse portfolio of energy projects including wind power forecasting, carbon capture and sequestration, geothermal reservoir management, advanced nuclear fuel cycle analysis, and resource utilization analyses. The group consists of atmospheric and land surface modelers, nuclear engineers, and experimentalists. Recent projects include work with the DOE Preventative Nuclear Detection Program, the Office of Nuclear Energy, the Office of Energy Policy and Systems Analysis, the Critical Materials Institute, DOE Wind and Water Power Technologies Program, and California Energy Commission. We also support LLNL's nuclear forensics program, Global Security's E and N programs, and the National Atmospheric Release Advisory Center.

Subsurface Transport

Group Leader:  Joshua White

The Subsurface Transport Group has a broad range of experimental, computational, and fieldwork expertise related to fluid flow and reactive mass transport phenomena in subsurface and terrestrial environmental systems. We address coupled hydro-chemical-thermal-mechanical phenomena across multiple scales--from the laboratory scale to the field scale--relevant to both natural and engineered applications. Our scientific investigations support multiple energy, environmental, and national security missions.

In these efforts, we routinely interface with other discipline organizations from across the laboratory and from outside institutions in collaborative research.

Seismology Group

Group Leader:  Michael Pasyanos

The Seismology Group is comprised of over a dozen geophysicists, including career employees, students, and post-docs. Individuals in the group have expertise in seismic monitoring, computational seismology, global earth models, shallow geophysics, seismotectonics, location methods, earthquake and explosion sources, surface waves, lithospheric structure, seismic attenuation, international capacity building, seismic tomography, fossil and alternative energy systems, seismic hazard and strong ground motion. Research in the group takes advantage of the lab's world-class resources including expertise in managing seismic databases, complex data analysis, and high-performance computing (HPC). Individuals in the group support lab programs related to national security and energy security.