Research Highlights

 

Highlights will be written for high-level accomplishments and published journal articles of ASR research. Each ASR principal investigator (PI) is expected to submit at least one highlight per fiscal year.

Recent Highlights

Revisiting the deepening-warming decoupling theory

21 September 2021

Zheng, Youtong

Supported by: ARM ASR

Research area: Cloud Processes

An important but poorly understood phenomenon about the stratocumulus (low-lying blanket-like clouds) is its tendency to transition to cumulus clouds (cauliflower-like clouds) as the sea surface warms, called the stratocumulus-to-cumulus transition (SCT). The conventional wisdom is that the SCT is primarily driven by the enhanced evaporation of seawater. We revisit [...]

Read more

Detecting the unseen forces controlling thunderstorm formation

16 September 2021

Fast, Jerome D

Supported by: ARM ASR

Research area: Cloud Distributions/Characterizations

The mountains of central Argentina generate some of the most intense thunderstorms in the world. Using weather radars, researchers with the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) user facility mapped the complex wind patterns responsible for the development of the clouds that grow into these intense thunderstorms. These [...]

Read more

Prediction for cloud spacing confirmed using stereo cameras

15 September 2021

Romps, David

Supported by: ARM ASR

Research area: Cloud Distributions/Characterizations

What sets the sizes of clouds and the spacing between them? For shallow cumulus, we can at least offer an order-of-magnitude answer to this question: the natural length scale in a field of shallow cumulus is the depth of the boundary layer. Unfortunately, this hand-waving is a bit uncomfortable. If [...]

Read more

Arctic industrial aerosol particles impact clouds

14 September 2021

de Boer, Gijs; Maahn, Maximilian

Supported by: ARM ASR

Research area: Cloud-Aerosol-Precipitation Interactions

This work demonstrates that the particles emitted by anthropogenic industrial activities in the Arctic impact the properties of clouds locally.

Read more

Testing our predictive understanding of aerosol particles serving as ice-nucleating particles

11 September 2021

Knopf, Daniel

Supported by: ARM ASR

Research area: Aerosol Processes

Our predictive understanding of how aerosol particles serve as ice-nucleating particles (INPs), leading to ice crystal formation, inadequately represents their impacts on cloud properties and precipitation in cloud-resolving and climate models. We conducted a collaborative pilot field campaign as a "closure" exercise, to quantify our current ability to predict INP [...]

Read more