Details:

Journal Title:
Proceedings of the National Academy of Science of the United States
Personal Author:
Frankenberg, Christian ; Thorpe, Andrew K. ; Thompson, David R. ; Hulley, Glynn ; Kort, Eric Adam ; ... More +
Frankenberg, Christian ; Thorpe, Andrew K. ; Thompson, David R. ; Hulley, Glynn ; Kort, Eric Adam ; Vance, Nick ; Borchardt, Jakob ; Krings, Thomas ; Gerilowski, Konstantin ; Sweeney, Colm ; Conley, Stephen ; Bue, Brian D. ; Aubrey, Andrew D. ; Hook, Simon ; Green, Robert O. Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) ; ESRL (Earth System Research Laboratory) ; GML (Global Monitoring Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)
OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) ; ESRL (Earth System Research Laboratory) ; GML (Global Monitoring Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:
Methane (CH4) impacts climate as the second strongest anthropogenic greenhouse gas and air quality by influencing tropospheric ozone levels. Space-based observations have identified the Four Corners region in the Southwest United States as an area of large CH4 enhancements. We conducted an airborne campaign in Four Corners during April 2015 with the next-generation Airborne Visible/Infrared Imaging Spectrometer (near-infrared) and Hyperspectral Thermal Emission Spectrometer (thermal infrared) imaging spectrometers to better understand the source of methane by measuring methane plumes at 1-to 3-m spatial resolution. Our analysis detected more than 250 individual methane plumes from fossil fuel harvesting, processing, and distributing infrastructures, spanning an emission range from the detection limit similar to 2 kg/h to 5 kg/h through similar to 5,000 kg/h. Observed sources include gas processing facilities, storage tanks, pipeline leaks, and well pads, as well as a coal mine venting shaft. Overall, plume enhancements and inferred fluxes follow a lognormal distribution, with the top 10% emitters contributing 49 to 66% to the inferred total point source flux of 0.23 Tg/y to 0.39 Tg/y. With the observed confirmation of a lognormal emission distribution, this airborne observing strategy and its ability to locate previously unknown point sources in real time provides an efficient and effective method to identify and mitigate major emissions contributors over a wide geographic area. With improved instrumentation, this capability scales to spaceborne applications [Thompson DR, et al. (2016) Geophys Res Lett 43(12): 6571-6578]. Further illustration of this potential is demonstrated with two detected, confirmed, and repaired pipeline leaks during the campaign.
Source:
Proceedings of the National Academy of Sciences of the United States of America, 113(35), 9734-9739.
DOI:
https://doi.org/10.1073/pnas.1605617113
Document Type:
Journal Article
Funding:
Grant no. NA14OAR0110139
Rights Information:
Other
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:6fdf21703dafb99983e5f707151a4ab7d953361932e46f556e5f005540a4d770
Download URL:
https://repository.library.noaa.gov/view/noaa/18303/noaa_18303_DS1.pdf
File Type:

Supporting Files

• No Additional Files

More +