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Anna Karion (Fed)

Mechanical Engineer

Anna Karion is a research scientist in the NIST Greenhouse Gas Measurements program, supporting the Urban Testbed program.  She is the Principal Investigator of the Northeast Corridor Urban Testbed Project. The Urban Testbed project seeks to advance the capability of methodologies for estimating greenhouse gas (GHG) emissions from urban regions.  These methods include making observations of GHG concentrations in the atmosphere and interpreting them to determine emissions, trends in emissions, the effectiveness of mitigation efforts, and source sector attribution for emissions of different GHGs. 

Program Website: https://www.nist.gov/topics/greenhouse-gas-measurements

Google Scholar: https://scholar.google.com/citations?user=YkVPjZQAAAAJ&hl=en&oi=ao 

 

Publications

Underestimation of Thermogenic Methane Emissions in New York City (New York City methane emissions: what are we missing?)

Author(s)
Joseph R. Pitt, Israel Lopez Coto, Anna Karion, Kristian D. Hajny, Jay M. Tomlin, Robert Kaeser, Thilina Jayarathne, Brian H. Stirm, Cody R. Floerchinger, Christopher P. Loughner, Róisín Commane, Conor K. Gately, Lucy R. Hutyra, Kevin R. Gurney, Geoffrey S. Roest, Jianming Liang, Sharon Gourdji, Kimberly Mueller, James Whetstone, Paul B. Shepson
Recent studies have shown that methane emissions are underestimated by inventories in many US urban areas. This has important implications for climate change

Data and Software Publications

Observations of carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) mole fractions from the Los Angeles Megacity Carbon Project

Author(s)
Jooil Kim, Timothy Lueker, Elizabeth DiGangi, Steven Prinzivalli, Gabriel Salinas, Charles Draper, Baldelli Seth, Peter Salameh, Anna Karion, James Whetstone, Charles E. Miller, Ray Weiss, Ralph Keeling
Updated April 2025. Here we provide hourly observations of carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) mole fractions in dry air from tower- and rooftop-based sites in the Los

In Situ Carbon Dioxide Mole Fractions from two NY-region sites in the North-East Corridor Baltimore/Washington Project: April 2021 - October 2021

Author(s)
Anna Karion, Elizabeth DiGangi, Steve Prinzivalli, Clayton Fain, Bryan Biggs, Charlie Draper, Seth Baldelli, Peter Salameh, Jooil Kim, William Callahan, James Whetstone
Hourly carbon dioxide (CO2) mole fraction data collected from two tower sites in the New York City area: Stockholm, NJ (SNJ) and Mineola, NY (MNY), as part of NIST's Northeast Corridor Urban Testbed

Patents (2018-Present)

Image of an map view with the text "Natural gas extraction east of Platteville Colorado. DCS could monitor over 100 sites from central location. Overlapping fields could ensure complete coverage".

Hub and Spoke System for Detecting and Locating Gas Leaks

NIST Inventors
Greg Rieker , Ian Coddington , Kuldeep Prasad and Anna Karion
A system for detecting gas leaks and determining their location and size. A data gathering portion of the system utilizes a hub and spoke configuration to collect path-integrated spectroscopic data over multiple open paths around an area. A processing portion of the system applies a high-resolution
Created May 31, 2018, Updated December 8, 2022
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