News

An early-career scientist takes on a new committee and a project to improve models of marine clouds. Howard University atmospheric scientist Osinachi Ajoku was 5 years old when he traveled with his parents to their native Nigeria. He remembers seeing a giant mid-day sun, obscured in a haze of smoke, hanging in the sky like a blurry red disk.

DOE graduate student program gives early career scientist opportunity to translate aerosol

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

observations into models. Growing up in Queens, the New York City borough across the East River from Manhattan, Nahin Ferdousi-Rokib sometimes found it difficult to breathe. And when air quality warnings were announced on the news, she knew that her friends with asthma would have difficulties.

Enhancing the understanding of stratocumulus (Sc) cloud responses to meteorological factors could help reduce uncertainties in climate projections.Among various factors (lower-tropospheric stability, subsidence rate, wind speeds, etc.), the influence of horizontal temperature advection (Tadv), particularly warm-air advection (WADV), on Sc remains the least understood.

UC Berkeley researchers geolocated each event in a large dataset of human mass-casualty disasters and associated it with elements of a multi-decadal storm track dataset. The researchers found that a particular type of storm called a monsoon

monsoon

The seasonal reversal in atmospheric low-level circulations, particularly the surface winds and associated precipitation, resulting in a pattern of wet summers and dry winters.

Source: National Weather Service Source

low-pressure system produces more than half of hydrometeorological disasters in South Asia during summer.

Cloud droplets develop from aerosol particles. But before an aerosol particle activates to a cloud droplet, it exists as a solution droplet, commonly referred to as haze. Most atmospheric models do not fully represent haze particles and the associated interactions with cloud droplets.

Entrepreneurs with technologies for a clean energy future connect with resources and innovation 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

at U.S. Department of Energy national labs through the Lab-Embedded Entrepreneurship Program. Twenty startups will present their technologies for a clean energy future at this year’s Lab-Embedded Entrepreneur Program (LEEP) Demo Day, June 7, in Chicago.

Now in its fourth decade of collecting atmospheric data, ARM embraces adaptability to meet evolving user needs. This is the 10th and final article in the yearlong “ARM30” series of stories on the evolution of ARM―its data, sites, science missions, field campaigns, and people.

Mathematically describing air flow in the vicinity of tall canopies is required in a plethora of climate- and atmospheric-related applications. The swirling motion associated with air flow and how it interacts with the canopy structure has resisted complete theoretical treatment, which is the subject of this work.

Many ocean circulation problems can be addressed by simulating tracers that do not affect the ocean circulation, for instance, the simulation of marine biogeochemical cycles, or of dye tracers that reveal water mass pathways and mixing.

Douglas Wong, Indiana University at Bloomington, SCGSR 2020 S1 (NP) conducted in collaboration with Dr. Takeyasu Ito at Los Alamos National Laboratory the characterization of the facility’s new ultracold neutron (UCN) beamline, including studies of UCN transport and storage, and developed an analytical model to parametrize the input energy spectrum.

The Amazon Basin has been at the forefront of impactful deep convective cloud

deep convective cloud

Deep convective clouds (e.g., cumulonimbus clouds) are associated with severe storms, which can transport ice and supercooled large droplets into the higher levels of the atmosphere, frequently reaching an altitude of 10 km (33,000 feet), and sometimes much higher.

Source: NOAA Source

(DCC) studies. Our study investigates daytime DCC observations to document changes in storm characteristics within the context of the larger-scale environmental shifts found between the Amazon wet and dry seasons.

Argonne supports students’ ongoing engagement with the lab and scientific research by helping them secure a graduate fellowship. Three students who have completed their participation in the Science Undergraduate Laboratory Internships (SULI) Science Undergraduate Laboratory Internships Program at the U.S. Department of Energy’s (DOE) Argonne National Laboratory were accepted into the National Science Foundation’s (NSF) Graduate Research Fellowship Program (GRFP).