scholarly journals Elliptic Cylinder Airborne Sampling and Geostatistical Mass Balance Approach for Quantifying Local Greenhouse Gas Emissions

2017 ◽  
Vol 51 (17) ◽  
pp. 10012-10021 ◽  
Author(s):  
Jovan M. Tadić ◽  
Anna M. Michalak ◽  
Laura Iraci ◽  
Velibor Ilić ◽  
Sébastien C. Biraud ◽  
...  
Keyword(s):  
Mass Balance ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Elliptic Cylinder ◽  
Gas Emissions ◽  
Balance Approach ◽  
Airborne Sampling ◽  
Mass Balance Approach

scholarly journals Assessment of uncertainties of an aircraft-based mass-balance approach for quantifying urban greenhouse gas emissions

2013 ◽  
Vol 13 (11) ◽  
pp. 29895-29945 ◽  
Author(s):  
M. O. Cambaliza ◽  
P. B. Shepson ◽  
D. Caulton ◽  
B. Stirm ◽  
D. Samarov ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Mass Balance ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Background Concentration ◽  
Gas Emissions ◽  
Area Source ◽  
Balance Approach ◽  
Improve Measurement ◽  
Mass Balance Approach

Abstract. Urban environments are the primary contributors to global anthropogenic carbon emissions. Because much of the growth in CO2 emissions will originate from cities, there is a need to develop, assess and improve measurement and modeling strategies for quantifying and monitoring greenhouse gas emissions from large urban centers. In this study the uncertainties in an aircraft-based mass balance approach for quantifying carbon dioxide and methane emissions from an urban environment, focusing on Indianapolis, IN, USA, are described. We investigate the uncertainties in our aircraft-based mass balance approach by (1) assessing the sensitivity of the measured flux to important measurement and analysis parameters including wind speed, background CO2 and CH4, boundary layer depth, and interpolation technique, and (2) determining the flux at two or more downwind distances from a point or area source in rapid succession, assuming that the emission flux is constant. When we quantify the precision in the approach by comparing the estimated emissions derived from measurements at two or more downwind distances from an area or point source, we find that the minimum and maximum repeatability were 12% and 52%, with an average of 31%. We suggest that improvements in the experimental design can be achieved by careful determination of the background concentration, monitoring the evolution of the boundary layer through the measurement period, and increasing the number of downwind horizontal transect measurements at multiple altitudes within the boundary layer. Here we also discuss the potential application of the aircraft-based mass balance approach to megacities.

scholarly journals Assessment of uncertainties of an aircraft-based mass balance approach for quantifying urban greenhouse gas emissions

2014 ◽  
Vol 14 (17) ◽  
pp. 9029-9050 ◽  
Author(s):  
M. O. L. Cambaliza ◽  
P. B. Shepson ◽  
D. R. Caulton ◽  
B. Stirm ◽  
D. Samarov ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Mass Balance ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Background Concentration ◽  
Gas Emissions ◽  
Area Source ◽  
Balance Approach ◽  
Improve Measurement ◽  
Mass Balance Approach

Abstract. Urban environments are the primary contributors to global anthropogenic carbon emissions. Because much of the growth in CO2 emissions will originate from cities, there is a need to develop, assess, and improve measurement and modeling strategies for quantifying and monitoring greenhouse gas emissions from large urban centers. In this study the uncertainties in an aircraft-based mass balance approach for quantifying carbon dioxide and methane emissions from an urban environment, focusing on Indianapolis, IN, USA, are described. The relatively level terrain of Indianapolis facilitated the application of mean wind fields in the mass balance approach. We investigate the uncertainties in our aircraft-based mass balance approach by (1) assessing the sensitivity of the measured flux to important measurement and analysis parameters including wind speed, background CO2 and CH4, boundary layer depth, and interpolation technique, and (2) determining the flux at two or more downwind distances from a point or area source (with relatively large source strengths such as solid waste facilities and a power generating station) in rapid succession, assuming that the emission flux is constant. When we quantify the precision in the approach by comparing the estimated emissions derived from measurements at two or more downwind distances from an area or point source, we find that the minimum and maximum repeatability were 12 and 52%, with an average of 31%. We suggest that improvements in the experimental design can be achieved by careful determination of the background concentration, monitoring the evolution of the boundary layer through the measurement period, and increasing the number of downwind horizontal transect measurements at multiple altitudes within the boundary layer.

scholarly journals Bioconversion efficiencies, greenhouse gas and ammonia emissions during black soldier fly rearing – A mass balance approach

2020 ◽  
Vol 271 ◽  
pp. 122488 ◽  
Author(s):  
Alejandro Parodi ◽  
Imke J.M. De Boer ◽  
Walter J.J. Gerrits ◽  
Joop J.A. Van Loon ◽  
Marcel J.W. Heetkamp ◽  
...  
Keyword(s):  
Mass Balance ◽  
Greenhouse Gas ◽  
Ammonia Emissions ◽  
Black Soldier Fly ◽  
Balance Approach ◽  
Mass Balance Approach

Low-Carbon Russia: Prospects after the Crisis

2009 ◽  
pp. 107-120 ◽  
Author(s):  
I. Bashmakov
Keyword(s):  
Economic Growth ◽  
Potential Energy ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Low Carbon ◽  
Modeling Tools ◽  
Gas Emissions ◽  
Scenario Approach

On the eve of the worldwide negotiations of a new climate agreement in December 2009 in Copenhagen it is important to clearly understand what Russia can do to mitigate energy-related greenhouse gas emissions in the medium (until 2020) and in the long term (until 2050). The paper investigates this issue using modeling tools and scenario approach. It concludes that transition to the "Low-Carbon Russia" scenarios must be accomplished in 2020—2030 or sooner, not only to mitigate emissions, but to block potential energy shortages and its costliness which can hinder economic growth.

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