PNNL

Integrated Hydro-Terrestrial Modeling 2.0: Progress and Path Forward on Building a National Capability. Report of a workshop held October 31-November 2, 2023, with support from participating federal agencies including NASA, NOAA, US EPA USDOE, USGS and th

CRYO NANOMANIPULATOR WITH INTEGRATED GAS INJECTION

A nanomanipulator with integrated gas injection capability has been developed. The device features a 1/4" tube with an integrated thermocouple wire and two small diameter stainless steel tubes that terminate near a tungsten needle. The tungsten wire can be cooled to cryogenic temperatures via a copper braid connected to a cold finger. Thermal insulation between the tungsten needle and the 1/4" tube body is maintained via a plastic spacer to minimize thermal conduction. The two small diameter stainless steel tubes provide a means to inject gas which flows near the end of the tungsten needle. Gas flow can be controlled independently to each small diameter stainless steel tubes, allowing the flow of the same or different gases. The lateral and horizontal positioning of the small diameter stainless steel tubes relative to the tungsten wire is made via an attached jig. The design of the device allows the introduction of various gases into the focused ion beam/scanning electron microscope to facilitate the deposition of metallic or carbonaceous thin films on cryogentically-cooled surfaces

Better Modeling of Cloud Properties Shows Aerosol-Cloud-Interactions' Influence on Convective Clouds

Using a physically-advanced modeling scheme shows that anthropogenic aerosols significantly enhance the convective intensity and precipitation of storms

Studying Cloud Condensation Nuclei to Close the Gap of Modeled Aerosol Properties

Performing closure studies using aerosol size, aerosol composition, and cloud condensation nuclei measurements of mixed aerosol from the Southern Great Plains region.

Simulating the Global Distribution and Climate Impacts of Nitrate Aerosol

Adding an advanced atmospheric aerosol treatment to a climate model enables assessments of the radiative effects of nitrate aerosols.

CO2 geological storage: Critical insights on plume dynamics and storage efficiency during long-term injection and post-injection periods

A Diagnostics Package to Evaluate Aerosols in an Earth System Model with Field Campaign Measurements

The Earth system model aerosol-cloud diagnostics package version 1 uses aircraft, ship, and surface measurements to evaluate simulated aerosols in an Earth system model.

Harnessing Stratospheric Diffusion Barriers for Enhanced Climate Geoengineering

CREEP MODELING FOR INJECTION-MOLDED LONG-FIBER THERMOPLASTICS

Aerosols Increase Size of Cloud Cells, Causing Greater Radiative Cooling Under Polluted Conditions

Researchers develop framework that tracks the aerosol–cloud interactions along the trajectories of air parcels and embed framework into Weather Research Forecast model.