Skip to Main Content U.S. Department of Energy
Atmospheric Sciences and Global Change
  • Dr. Leon Clarke

    Leon Clarke Honored by the Integrated Assessment Modeling Consortium

    Congratulations to Dr. Leon Clarke, economist and global change researcher working at PNNL. The Integrated Assessment Modeling Consortium (IAMC) commended him for extraordinary contributions to the field of integrated assessment modeling in 2014, prominently represented in the 5th Assessment Report of the Intergovernmental Panel on Climate Change.

  • anvil and cumulus convective clouds

    Storm Clouds Take Rain on Rollercoaster Ride

    Rising plumes of convective storm clouds can often carry raindrops, snowflakes, and even hailstones upward before they fall out. This lengthened journey prolongs their growth stage and boosts the eventual intensity and amount of precipitation. PNNL researchers explained the complex fluxes in turbulent storm clouds using statistical distributions of the vertical velocity and various kinds of precipitating particles within the clouds.

  • California fire national forest

    California: A Coming Century of Fire?

    The number of days of extreme fire risk in California might be six times the current number by the end of the century, according to a study led by scientists at PNNL. The research, published in the Bulletin of the American Meteorological Society, likely underestimates the increase, compared to the actual fire risk over the past few decades.

  • atmospheric rivers model

    Irrigation Methods Drain Water Availability

    Research led by PNNL scientists found in areas that extensively rely on irrigation, surface water or groundwater supply might wither, depending on the supply source. And regions that depend primarily on surface water irrigation (rivers, lakes, reservoirs) will be more vulnerable to drought as the impacts of irrigation on water supply are most significant during times with low water flow.

  • Angling for an Answer

    Passing laws to regulate carbon dioxide emissions, methane emissions, or industrial particles could have an important effect on climate change. Scientists have established a technique using climate models to compare the factors to the effects they have on climate change by peering into climate models from a different angle.

How do human activities and natural systems interact to affect the Earth's climate? Ultimately, that is the question challenging scientists in PNNL’s Atmospheric Sciences & Global Change Division.

Read more about our organization.   [+ expand/ - collapse]

Atmospheric Sciences & Global Change

Seminar Series

Science at PNNL