ATom: Cloud and Coarse Aerosol Measurements from CAPS Instrument, 2016-2018

Description

This dataset contains cloud type and coarse aerosol contents measured by the University of Vienna's second-generation Cloud Aerosol and Precipitation Spectrometer (CAPS) instrument mounted to the NASA DC-8 aircraft during the four ATom campaigns that occurred from 2016 to 2018. CAPS measures particle size distributions in a size range between nominally 0.5 micrometers and 960 micrometers. The sizes range between approximately 0.5 and 50 micrometers is covered by the optical particle counter component of CAPS-the Cloud and Aerosol Spectrometer with Depolarization Detection (CAS-DPOL). The sizes range from 15 to 930 micrometers is measured with the optical array probe called Cloud imaging Probe (CIP). Cloud types are determined using an algorithm developed to detect and classify clouds using measurements of CAPS. Relative humidity and temperature are considered by the algorithm. The cloud indicator provides a classification on a 1 Hz basis and separates data in cloud-free, aerosol-cloud transition regime (ACTR), liquid clouds, clouds in the mixed-phase temperature regime (MPTR), and cirrus clouds. The coarse aerosol product provides cloud and aerosol particle number concentrations at standard pressure (1013.25 hPa) and standard temperature (273.15 K) in selected size ranges. Particle sizes refer to ammonium sulfate optical equivalent diameter (m=1.52 + 0.0i).

Resources

Name Format Description Link
33 ATom: Cloud and Coarse Aerosol Measurements from CAPS Instrument, 2016-2018: ATom_CAPSVienna_Data.pdf https://data.ornldaac.earthdata.nasa.gov/public/atom/ATom_CAPSVienna_Data/comp/ATom_CAPSVienna_Data.pdf
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ATOM/guides/ATom_CAPSVienna_Data.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1981
22 The CAPS instrument attached to the exterior of the NASA DC-8 aircraft. https://daac.ornl.gov/ATOM/guides/ATom_CAPSVienna_Data_Fig1.jpg
21 ATom campaign page https://daac.ornl.gov/ATOM/campaign/
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1981
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/atom/ATom_CAPSVienna_Data/

Tags

  • climate-indicators
  • aerosols
  • atmosphere
  • atmospheric-ocean-indicators
  • clouds
  • earth-science

Topics

Categories