News

Distinguishing the human activity signature in past and ongoing sea-level changes is a challenging topic of intense studies. A major obstacle for the reliable detection of anthropogenic signals originates from significant contribution of natural fluctuations to sea-level changes.

In collaboration with Princeton and NOAA-GFDL colleagues, Lawrence Livermore Lab scientists developed a new framework for evaluating ocean water mass changes. This framework elucidated the sensitivity of NOAA-GFDL ocean models to atmosphere and cryosphere

cryosphere

The frozen water part of the Earth system. This includes frozen parts of the ocean, such as waters surrounding Antarctica and the Arctic.

Source: NOAA Source

surface-forced changes.

The E3SM

Energy Exascale Earth System Model (E3SM)

The Energy Exascale Earth System Model (E3SM) project includes Earth System Models, simulations, and predictions to investigate energy-relevant science using code optimized for DOE's advanced supercomputers.

Source: NVCL Web Page Source

Project has tagged the E3SM version 2.1 of its source code on January 12th, 2023. This is technically a minor release compared to version 2.0 but has a substantial improvement, namely stronger Atlantic Meridional Overturning Circulation

Atlantic Meridional Overturning Circulation

The Atlantic Meridional Overturning Circulation (AMOC) circulates water from north to south and back in a long cycle within the Atlantic Ocean. This circulation brings warmth to various parts of the globe and also carries nutrients necessary to sustain ocean life.

Source: NOAA Source

(AMOC), smaller regional sea surface temperature (SST), and smaller sea-ice biases.

Coastal storm surges, direct runoff from heavy rain, and river flooding can happen simultaneously or successively, creating a compound event with more severe flooding.

Particles in the atmosphere affect global climate. For example, the black carbon

black carbon

The sooty black material emitted from gas and diesel engines, coal-fired power plants, and other sources that burn fossil fuel. It comprises a significant portion of particulate matter or PM, which is an air pollutant.

Source: EPA Source

from burning fossil fuels absorbs and radiates light and heat. To calculate the effects of aerosols

aerosols

Small particles or droplets, such as wildfire smoke, volcanic gases, or salty sea spray, that float in the air. They are emitted by both natural events and human activities.

Source: NASA Global Climate Change Source

on climate, scientists rely on simulated aerosol fields. How these models represent aerosol mixing state potentially introduces large uncertainties into climate calculations.

The African American Advancement Group (AAAG) is an employee resource group at the U.S. Department of Energy's Brookhaven National Laboratory. AAAG members help employees and guests at Brookhaven Lab promote awareness of Black, African, African American, and Caribbean cultures.

Diving deep into materials science research and new collaborations. When Cesar Moriel watches videos, it’s not to watch streaming content, but instead he geeks out over the mechanics and physics of cars and other machines. “My dad jokes around that I am not normal. A normal guy would be outside playing basketball or doing something fun, but instead I am inside watching stress videos,” said Moriel. “But I love this stuff.”

This study proposes a new mechanism of aerosol-entrainment coupling that demonstrates the interactions between aerosols and the entrainment process and highlights the importance of accounting for this effect in numerical model simulations of the boundary layer. The proposed mechanism of aerosol-entrainment coupling can advance our understanding of aerosol climate effects.

We developed a micronebulization-aerosol mass spectrometry

mass spectrometry (MS)

Mass spectrometry (MS) is an analytical technique that separates ionized particles such as atoms, molecules, and clusters and can be used to determine the molecular weight of the particles.

Source: National Library of Medicine Source

technique that allows us to extract the small mass of ambient particles that uncrewed aerial systems (UAS) can collect, aerosolize the resulting low-volume liquid extract, and sample that aerosol to quantitatively determine the mass concentration of different chemical components present in the particles.

Microbes

microbe

Microbes are tiny living things that are found all around us and are too small to be seen by the naked eye. They live in water, soil, and in the air.

Source: NIH Source

play important roles in ecosystems,

ecosystem

A natural community of plants, animals, and other living organisms and the physical environment in which they live and interact.

Source: A student's guide to Global Climate Change Source

and these roles are changing with global warming. Scientists also now know that most types of microbes are infected by viruses, but they know relatively little about how these viral infections could change how microbes react to warming. These changes could ultimately affect the responses of whole ecosystems to warming.

Shiitake mushrooms get their name from the same place they often source their nutrients — the shii tree, a Japanese relative of the oak. These fungi are part of the genus Lentinula, which have evolved to decompose hardwoods on every continent besides Europe and Antarctica. A new analysis takes a genomic

genomic

An interdisciplinary field of science that focuses on the structure, function, evolution, mapping, and editing of genomes.

Source: energy.gov Source

look at Lentinula samples from around the world.

Addressing the challenge of increasing the representation of women and racial and ethnic minorities, Argonne is connecting with students to make a more inclusive environment in high performance computing.

high-performance computing (HPC)

High-performance computing – the most powerful and largest scale computing systems – enables researchers to study systems that would otherwise be impractical, or impossible, to investigate in the real world due to their complexity or the danger they pose

Source: DOE Office of Science Source

To tackle the nation’s biggest scientific and engineering challenges, the U.S. Department of Energy’s (DOE) Argonne National Laboratory continues to build a more diverse and inclusive workforce in HPC.