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  1. Research
  2. Scientific Discovery
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  4. Atmospheric Science

Atmospheric
Science

Understanding interactions among
atmospheric particles, clouds, the
land surface, and human activities

PNNL research on fundamental atmospheric processes from tiny aerosols and their influence on clouds to land-air interactions and extreme weather events includes how they may be changing because of human activities.

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If Earth were the size of an apple, its atmosphere would be no thicker than the apple’s skin. What happens within that thin atmospheric layer is essential to life on the planet, from the quality of the air we breathe to the rainfall that supports agriculture and ecosystems.

For a long time, scientists have studied the atmosphere to better understand the forces that shape weather and climate. Researchers at PNNL focus on fundamental atmospheric processes and how they may be changing because of human activities. Scientists apply the latest measurements and models to explore how tiny atmospheric particles called aerosols influence clouds, how the land surface interacts with the atmosphere above, and how extreme weather events may be changing over time.

Technical leadership

PNNL provides technical leadership for Atmospheric Radiation Measurement (ARM), a Department of Energy (DOE) Office of Science user facility. ARM provides atmospheric observations at ground-based sites around the world, the oldest of which has been in continuous operation for more than a quarter century. ARM also collects data using manned aircraft and unmanned aerial systems.

To better understand the complex chemical and physical processes that influence atmospheric aerosols and govern cloud processes, PNNL researchers use the controlled environments of the atmospheric research chamber and the ice nucleation chamber at the Atmospheric Measurements Laboratory (AML). The Environmental Molecular Sciences Laboratory (EMSL) also provides unique instrumentation that can be used to study different aspects of aerosol composition.

Improving the power of models

Ultimately, the goal of much of PNNL’s atmospheric research is geared toward improving the predictive power of models across a wide range of scales, from large-eddy simulations (LESs) that span a few kilometers to global models such as DOE’s Energy Exascale Earth System Model (E3SM).  

Other key atmospheric science-focused projects led by PNNL researchers include:

  • ICLASS - Integrated Cloud, Land-surface, and Aerosol System Study
  • CMDV – Climate Model Development and Validation
  • WACCEM – Water Cycle and Climate Extremes Modeling
  • HiLAT – High-Latitude Application and Testing of Climate Models
  • LASSO – LES ARM Symbiotic Simulation and Observation.

PNNL’s atmospheric sciences capabilities also support research for renewable energy. This includes, for example, the DOE Atmosphere to Electrons (A2e) framework, which is aimed at integrating atmospheric sciences, turbine aerodynamics, and new control system technology to optimize power production entirely from wind plants.

PNNL researchers also study the impacts of heat waves, droughts, and other weather and climate extreme events on the nation’s energy system and other human and natural systems. They do so knowing that atmospheric observations and models are critical for advancing other components of PNNL’s Earth System Science enterprise.

Recent News

DECEMBER 16, 2020
News Release

Urban Land and Aerosols Amplify Hazardous Weather, Steer Storms Toward Cities

Read
A thunderstorm stirs above a cityscape, as lightning touches down near buildings. The presence of urban land can amplify hazardous weather, according to new research from PNNL scientists. (Photo by Free-Photos | Pixabay.com)
DECEMBER 15, 2020
News Release

Error Correction Means California’s Future Wetter Winters May Never Come

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Kern River gently flows near Bakersfield, California, where future winters will likely be drier than expected, according to new research from PNNL scientists. (Photo by © Christian Richard Thornton | Shutterstock.com)
DECEMBER 9, 2020
Web Feature

From Graphs to Videos in a Single Summer: a SULI Intern Gets to Work

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Still from a video showing brightly colored representations of evolving storms over a background of storms
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Related Capabilities

Climate Change Science & Atmospheric Science
SEE ADDITIONAL CAPABILITIES

Facilities & Centers

Atmospheric Radiation Measurement User Facility

Related Links

Job OpeningsMeasurement CapabilitiesAtmospheric ModelingFundamental & Computational Sciences ResearchPublications

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