Airborne Observations and Modeling Comparison of Global Inorganic Aerosol Acidity

Description

This dataset provides observations collected during eleven airborne campaigns from 2006–2017 and associated input and output from nine widely used chemical transport models (CTMs). The airborne campaigns include ARCTAS-A, ARCTAS-B, ATom-1 and ATom-2, CalNex, DC3, INTEX-B, KORUS-AQ, MILAGRO, SEAC4RS, and WINTER, and they sampled mainly tropospheric air over the conterminous U.S. and the state of Alaska, Mexico, Canada, Greenland, and South Korea and remote areas over the Arctic, Pacific, Southern, and Atlantic Oceans. The CTMs are the AM4.1, CCSM4, GEOS-5, GEOS-Chem TOMAS, GEOS-Chem v10, GEOS-Chem v12, GISS-MATRIX, GISS-ModelE, and TM4-ECPL-F, and the output includes sulfate, nitrate, temperature, specific humidity, mixing ratio of ammonium, the volume mixing ratio of nitric acid, surface pressure, gas-phase ammonia, gas-phase nitric acid, pressure, total ammonium, etc. The observations were collected in-situ from a variety of instruments, including the Aerosol Microphysical Properties (AMP), HR Aerodyne Aerosol Mass Spectrometer (AMS), CIT Chemical Ionization Mass Spectrometer (CIMS), diode laser hygrometer (DLH), a mist chamber/ion chromatography system (MC/IC), Particle Analysis by Laser Mass Spectrometer (PALMS), Single Particle Soot Photometer (SP2), and UCI Whole Air Sampler (WAS). In-situ data also include latitude, longitude, and pressure. These observations were used to investigate how aerosol pH and ammonium balance change from polluted to remote regions, such as over oceans, and were compared to predictions from the CTMs.

Resources

Name Format Description Link
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ATOM/guides/ATom_Modeled_Observed_Data.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1857
33 Airborne Observations and Modeling Comparison of Global Inorganic Aerosol Acidity: file_groupings.pdf https://data.ornldaac.earthdata.nasa.gov/public/atom/ATom_Modeled_Observed_Data/comp/file_groupings.pdf
34 Flight tracks for airborne campaigns in this dataset. https://daac.ornl.gov/ATOM/guides/ATom_Modeled_Observed_Data_Fig1.png
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%2F1857
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/atom/ATom_Modeled_Observed_Data/
33 Airborne Observations and Modeling Comparison of Global Inorganic Aerosol Acidity: ATom_Modeled_Observed_Data.pdf https://data.ornldaac.earthdata.nasa.gov/public/atom/ATom_Modeled_Observed_Data/comp/ATom_Modeled_Observed_Data.pdf

Tags

  • aerosols
  • atmosphere
  • atmospheric-chemistry
  • air-quality
  • earth-science

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