ARM

Tag: CCN

  • New Aerosol Hygroscopicity Kappa Data Available

    Sample CCNSMPSKAPPA plots from the Surface Atmosphere Integrated Field Laboratory (SAIL) field campaign in Colorado show kappa values within critical diameter-supersaturation field space (top) and a time series of kappa (bottom) on March 15, 2022, at ARM’s Aerosol Observing System (AOS) site on Crested Butte Mountain. The CCN particle counter and SMPS operated as part…

  • Cloud Condensation Nuclei Vertical Profile Data Product Updated

    This sample plot from ARM’s Southern Great Plains atmospheric observatory shows the retrieved number concentration of cloud condensation nuclei at 0.4% supersaturation for September 22, 2016. A new version of the Retrieved Number concentration of Cloud Condensation Nuclei value-added product (RNCCN VAP) is now available for evaluation. This VAP provides the vertical distribution of cloud…

  • New Aerosol Hygroscopicity Kappa Data Ready for Evaluation

    Sample CCNSMPSKAPPA plots from the Surface Atmosphere Integrated Field Laboratory (SAIL) field campaign in Colorado show kappa values within critical diameter-supersaturation field space (top) and a time series of kappa (bottom) on March 15, 2022, at the Crested Butte Mountain Resort site. Hygroscopicity is the ability of a particle to take up moisture from the…

  • New Aerosol Hygroscopicity Kappa Data Released for 3 ARM Sites

    Sample CCNSMPSKAPPA plots from the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign show kappa values within critical diameter-supersaturation field space, top, and a time series of kappa, bottom, on November 15, 2018. Hygroscopicity is the ability of a particle to take up moisture from the environment and is important for understanding the formation…

  • Evaluate New Cloud Condensation Nuclei Vertical Profile Data Product

    This sample plot from a day at ARM’s Southern Great Plains atmospheric observatory shows the retrieved number concentration of cloud condensation nuclei at 0.4% supersaturation. A new value-added product (VAP) provides the vertical distribution of cloud condensation nuclei (CCN) number concentrations for better representation of aerosol indirect effects in climate models. The Retrieved Number concentration…

  • Aerosol Hygroscopicity Kappa Data Product Available for Evaluation

    Sample plots from ARM’s Southern Great Plains atmospheric observatory show kappa values within critical diameter-supersaturation field space, top, and a time series of kappa, bottom. A new value-added product (VAP) from the Atmospheric Radiation Measurement (ARM) user facility calculates the hygroscopic properties of measured aerosol particles. Hygroscopicity is the ability of a particle to take…