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Environment

Greenhouse Gas Measurements

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Displaying 151 - 175 of 367

The Indianapolis Flux Experiment (INFLUX): A test-bed for developing anthropogenic greenhouse gas emission measurements.

May 23, 2017
Author(s)
Ken Davis, Kevin Gurney, R. M. Hardesty, Shepson Paul, Colm Sweeney, Jocelyn Turnbull, James Whetstone, Anna Karion
The objective of the Indianapolis Flux Experiment (INFLUX) is to develop, evaluate and improve methods for measuring greenhouse gas (GHG) emissions from cities. INFLUX's scientific objectives are to quantify CO2 and CH4 emission rates at 1 km2 resolution

Tower based measurement network design for the North East Corridor project

May 17, 2017
Author(s)
Israel Lopez Coto, Subhomoy Ghosh, Kuldeep R. Prasad, James R. Whetstone
The North-East Corridor project aims to use a top-down inversion method to quantify sources of Greenhouse Gas (GHG) emissions in the urban areas of, in the first phase, Washington DC and Baltimore at approximately 1km2 resolutions. Since inversion methods

An All-Metal, 3-D-Printed CubeSat Feed Horn: An assessment of performance conducted at 118.7503 GHz using a robotic antenna range

February 20, 2017
Author(s)
Josh Gordon, David R. Novotny, Ronald C. Wittmann, Michael Francis, Jeffrey R. Guerrieri, Alexandra Curtin, Miranda L. Butler, Albin Gasiewski, Lavanya Periasamy
Three-dimensional (3-D) printing is finding applications across many areas and may be a useful technology for antenna fabrication for cube satellites (CubeSats). However, the quality of an antenna produced using 3-D printing must be considered if this

Light Source Effects on Aerosol Photoacoustic Spectroscopy Measurements

October 6, 2016
Author(s)
James G. Radney, Christopher D. Zangmeister
Photoacoustic spectroscopy measurements of flame-generated soot aerosol coated with small amounts of water yielded absorption enhancements that were dependent on the laser used: quasi- continuous wave (Q-CW, ≈ 650 ps pulse duration and 78 MHz repetition

NIST Programs to Advance Accurate, Internationally-Recognized Stack Emissions Measurements

September 15, 2016
Author(s)
Aaron Johnson, Iosif Isaakovich Shinder, Rodney A. Bryant, JohnPaul R. Abbott, Keith A. Gillis, Joey Boyd, James Filla, Michael R. Moldover
Accurate flow measurements are essential to quantify the amount of greenhouse gases (GHGs) and other pollutants emitted from power plant stacks. Although protocols have been developed, the uncertainty of stack flow measurements has not been documented.