ATom: Measurements from the Quantum Cascade Laser System (QCLS), Version 2

Description

This dataset provides atmospheric concentrations of CO2, CH4, CO, and N2O measured by the Harvard Quantum Cascade Laser System (QCLS) instruments during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. The QCLS (DUAL and CO2) instrument package contains two separate optical assemblies and calibration systems, and a common data system and power supply. The QCLS DUAL instrument simultaneously measures CO, CH4, and N2O concentrations, in situ, using two thermoelectrically cooled pulsed-quantum cascade lasers light sources, a multiple pass absorption cell, and two liquid nitrogen-cooled solid-state detectors. The QCLS CO2 instrument measures CO2 concentrations in situ using a thermoelectrically cooled pulsed-quantum cascade laser light source, gas cells, and liquid nitrogen cooled solid-state detectors. The CO2 mixing ratio of air flowing through the sample gas cell is determined by measuring absorption from a single infrared transition line at 4.32 microns relative to a reference gas of known concentration.

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1932
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/atom/ATom_QCLS_Instrument_Data_V2/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ATOM/guides/ATom_QCLS_Instrument_Data_V2.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1932
33 ATom: Measurements from the Quantum Cascade Laser System (QCLS), Version 2: ATom_QCLS_Instrument_Data_V2.pdf https://data.ornldaac.earthdata.nasa.gov/public/atom/ATom_QCLS_Instrument_Data_V2/comp/ATom_QCLS_Instrument_Data_V2.pdf
21 ATom campaign page https://daac.ornl.gov/ATOM/campaign/
34 The Harvard QCLS (DUAL and CO2) instrument package contains two optical assemblies and calibration systems and a common data system and power supply. https://daac.ornl.gov/ATOM/guides/ATom_QCLS_Instrument_Data_V2_Fig1.png

Tags

  • atmosphere
  • atmospheric-chemistry
  • earth-science

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