Study shows warmer surface and more rain reduce Arctic snow cover; keep temperatures climbing.

PNNL adds its expertise to an international expedition investigating the vulnerable central Arctic Ocean.

Global climate change is often at the forefront of national and international discussions and controversies, yet many details of the specific contributing factors are poorly understood.

B3? E4? Remember the board game Battleship? One player suggests a set of coordinates to another, hoping to find the elusive location of an unseen vessel.That is a good place to start in assessing the search for dark matter.

PNNL helped teach the next generation of principal investigators about aerosols—tiny atmospheric particles that can affect the Earth’s climate—during the 2019 Aerosol Summer School.

When two powerful earthquakes rocked southern California earlier this month, officials’ attention focused, understandably, on safety. How many people were injured? Were buildings up to code? How good are we at predicting earthquakes?

After 10 years, a specialized research aircraft operated by PNNL for the DOE completed is final campaign. PNNL staff are leading efforts to instrument a new plane for future research.

Five years ago, in March 2014, researchers spent hours packed aboard a steamy Gulfstream-1 research aircraft as it zig-zagged between pristine air over the Amazon rainforest and polluted air nearby.

Representing aerosols on 1-kilometer cloud scale within a multi-scale modeling framework yields simulation improvement.

PNNL scientists today unveiled an updated tool designed to help stakeholders assess the nation's preparedness for biological-based dangers, also known as biothreats.

New research shows how the viscosity of organic particles affects the mixing state of soot and alters its warming or cooling potential.

Simulations reveal terrestrial factors and airflow as contributors to climate model challenges in producing rainfall over the world's largest rainforest.

Researchers used a suite of multi-model climate projections to explore shifts in tropical rainfall in response to warmer temperatures.

In an invited review for Nature Climate Change, scientists found that natural swings internal to the climate system played a larger role than previously thought in the expanding width of the tropics.

A new process-based model represents global changes in sediment and particulate organic carbon levels due to soil erosion, an important missing piece in Earth system models.

Simulations show North Pacific and North Atlantic subtropical high-pressure systems develop more during spring than summer under future warming.

In isolating the processes that drive Atlantic Multidecadal Variability, researchers found that the ocean drove stronger multidecadal variability (greater than 30 years), while the atmosphere drove weaker variability up to interdecadal time

A dynamic empirical framework for secondary organic aerosols could help bridge a significant gap between measurements and model predictions.

Newly-discovered relationship could help scientists better predict paths of hurricanes.