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ATom: L2 Photolysis Frequencies from NCAR CCD Actinic Flux Spectroradiometers (CAFS)

A newer version exists.

Click the DOI link in the following citation for the latest version (as of 2021-11-17):

Hall, S.R., and K. Ullmann. 2021. ATom: Actinic Flux and Photolysis Frequencies from CAFS Instrument, 2016-2018, V2. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1933

Overview

DOIhttps://doi.org/10.3334/ORNLDAAC/1714
Version1
Project
Published2019-09-30
Updated2021-11-17
Usage49 downloads

Description

This dataset provides the photolysis frequencies for photodissociation reactions for a variety of species. Frequencies were calculated based on spectrally resolved down- and up-welling in situ ultraviolet and visible actinic flux from approximately 280-650 nm as measured by the CCD Actinic Flux Spectroradiometers (CAFS) during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. ATom deploys an extensive gas and aerosol payload on the NASA DC-8 aircraft for systematic, global-scale sampling of the atmosphere, profiling continuously from 0.2 to 12 km altitude. Flights occurred in each of 4 seasons from 2016 to 2018. Flights originate from the Armstrong Flight Research Center in Palmdale, California, fly north to the western Arctic, south to the South Pacific, east to the Atlantic, north to Greenland, and return to California across central North America. ATom establishes a single, contiguous, global-scale dataset. This comprehensive dataset will be used to improve the representation of chemically reactive gases and short-lived climate forcers in global models of atmospheric chemistry and climate.

Science Keywords

  • ATMOSPHERE
  • AIR QUALITY
  • ATMOSPHERE
  • ATMOSPHERIC CHEMISTRY
  • PHOTOCHEMISTRY
  • PHOTOLYSIS RATES
  • ATMOSPHERE
  • ATMOSPHERIC RADIATION
  • ACTINIC FLUX

Data Use and Citation

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Crosscite Citation Formatter
Hall, S.R., and K. Ullmann. 2019. ATom: L2 Photolysis Frequencies from NCAR CCD Actinic Flux Spectroradiometers (CAFS). ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1714

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Data Files

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Companion Files

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Dataset has 1 companion files.

  • ATom_CAFS_Instrument_Data.pdf

Version History

VersionDataset TitlePublished
1ATom: L2 Photolysis Frequencies from NCAR CCD Actinic Flux Spectroradiometers (CAFS)2019-09-30
2ATom: Actinic Flux and Photolysis Frequencies from CAFS Instrument, 2016-2018, V22021-11-17