ASCENDS: Airborne CO2 LAS Retrieval, Indianapolis, IN, USA, 2014

Description

This dataset provides in situ airborne measurements of atmospheric carbon dioxide (CO2) over Indianapolis, Indiana (IN) on September 3, 2014 during the morning commuter period with heavy traffic emissions. Stationary source emissions are also included. The observed CO2 plume downwind of the urban area, along with the prevailing wind speed and direction, enabled estimations of emission rates. CO2 was measured with an airborne CO2 Laser Absorption Spectrometer (JPL CO2LAS) developed at NASA's Jet Propulsion Laboratory (JPL) to demonstrate the airborne Integrated Path Differential-Absorption (IPDA) lidar technique as a stepping stone to a capability for global measurements of CO2 concentrations from space. The CO2LAS measures the weighted, column averaged carbon dioxide between the aircraft and the ground using a continuous-wave heterodyne technique. The instrument operates at a 2.05 micron wavelength optimized for enhancing sensitivity to boundary layer carbon dioxide. Measurements were taken onboard a DC-8 aircraft during this Active Sensing of CO2 Emissions over Nights, Days and Seasons (ASCENDS) airborne deployment. The data are provided in HDF-5 format.

Resources

Name Format Description Link
33 ASCENDS: Airborne CO2 LAS Retrieval, Indianapolis, IN, USA, 2014: ASCENDS_LAS_IN_Sept_2014.pdf https://data.ornldaac.earthdata.nasa.gov/public/ascends/ASCENDS_LAS_IN_Sept_2014/comp/ASCENDS_LAS_IN_Sept_2014.pdf
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F2116
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/ascends/ASCENDS_LAS_IN_Sept_2014/
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/2116
21 USE SERVICE API https://opendap.earthdata.nasa.gov/
34 CO2 Sounder instrument photographs. a) The aircraft rack with the new seed laser subsystem. b) The aircraft racks containing the laser power amplifiers and the lidar's detector subsystem. c) The lidar's transmitter and receiver telescope assembly, which is positioned over the nadir window assembly in the aircraft fuselage. The optical pulses from the fiber amplifiers, and the received optical signals are coupled via fiber optics. d) The instrument operator's console, with the control computer screens folded away (Abshire et al., 2018). https://daac.ornl.gov/ASCENDS/guides/ASCENDS_LAS_IN_Sept_2014_Fig1.png
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ASCENDS/guides/ASCENDS_LAS_IN_Sept_2014.html

Tags

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

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