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RISPredicting Particle Critical Supersaturation from Hygroscopic Growth Measurements in the Humidified TDMA. Part II: Laboratory and Ambient Studies
Publisher: American Meteorological Society
Abstract: Laboratory studies are used to test the method proposed in Part I for estimating the critical supersaturation of quasi-monodisperse, dry particles from measurements of hygroscopic growth at relative humidities below 100%. ...
Predicting Particle Critical Supersaturation from Hygroscopic Growth Measurements in the Humidified TDMA. Part I: Theory and Sensitivity Studies
Publisher: American Meteorological Society
Abstract: A method is described to estimate the critical supersaturation of quasi-monodisperse, dry particles using measurements of hygroscopic growth at relative humidities below 100%. Köhler theory is used to derive two chemical ...
Mesoscale Vortex Development during Extreme Precipitation: Colorado, September 2013
Publisher: American Meteorological Society
Abstract: n 11?12 September 2013, portions of northern Colorado experienced flash flooding as a result of high rain rates accumulating over 180 mm of rain in 6 h. From 0400 to 0700 UTC 12 September a mesovortex was observed traveling ...
The Impact of Giant Cloud Condensation Nuclei on Drizzle Formation in Stratocumulus: Implications for Cloud Radiative Properties
Publisher: American Meteorological Society
Abstract: The impact of giant and ultragiant cloud condensation nuclei (>5-?m radius) on drizzle formation in stratocumuli is investigated within a number of modeling frameworks. These include a simple box model of collection, a ...
Ice Formation by Sulfate and Sulfuric Acid Aerosol Particles under Upper-Tropospheric Conditions
Publisher: American Meteorological Society
Abstract: Ice formation in ammoniated sulfate and sulfuric acid aerosol particles under upper-tropospheric conditions was studied using a continuous flow thermal diffusion chamber. This technique allowed for particle exposure to ...
A Continuous-Flow Diffusion Chamber for Airborne Measurements of Ice Nuclei
Publisher: American Meteorological Society
Abstract: A continuous-flow thermal gradient diffusion chamber was developed for operating in an aircraft and detecting ice nucleating aerosol particles in real time. The chamber volume is the annular space between two vertically ...
Can Ice-Nucleating Aerosols Affect Arctic Seasonal Climate?
Publisher: American Meteorological Society
Abstract: Mixed-phase stratus clouds are ubiquitous in the Arctic and play an important role in climate in this region. However, climate and regional models have generally proven unsuccessful at simulating Arctic cloudiness, ...
A Mesocosm Double Feature: Insights into the Chemical Makeup of Marine Ice Nucleating Particles
Publisher: American Meteorological Society
Abstract: AbstractThe abundance of atmospheric ice nucleating particles (INPs) is a source of uncertainty for numerical representation of ice-phase transitions in mixed-phase clouds. While sea spray aerosol (SSA) exhibits less ice ...
A Dynamic Link between Ice Nucleating Particles Released in Nascent Sea Spray Aerosol and Oceanic Biological Activity during Two Mesocosm Experiments
Publisher: American Meteorological Society
Abstract: mission rates and properties of ice nucleating particles (INPs) are required for proper representation of aerosol?cloud interactions in atmospheric models. Few investigations have quantified marine INP emissions, a potentially ...
The Lake—Induced Convection Experiment and the Snowband Dynamics Project
Publisher: American Meteorological Society
Abstract: A severe 5?day lake?effect storm resulted in eight deaths, hundreds of injuries, and over $3 million in damage to a small area of northeastern Ohio and northwestern Pennsylvania in November 1996. In 1999, a blizzard ...