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Diurnal Tracking of Anthropogenic Co2 Emissions in the Los Angeles Basin Megacity During Spring, 2010 : Volume 12, Issue 2 (22/02/2012)

By Newman, S.

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Book Id: WPLBN0003984386
Format Type: PDF Article :
File Size: Pages 31
Reproduction Date: 2015

Title: Diurnal Tracking of Anthropogenic Co2 Emissions in the Los Angeles Basin Megacity During Spring, 2010 : Volume 12, Issue 2 (22/02/2012)  
Author: Newman, S.
Volume: Vol. 12, Issue 2
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Lefer, B., Yung, Y. L., Xu, X., Andrews, A. E., Alvarez, S., Peischl, J.,...Gurney, K. R. (2012). Diurnal Tracking of Anthropogenic Co2 Emissions in the Los Angeles Basin Megacity During Spring, 2010 : Volume 12, Issue 2 (22/02/2012). Retrieved from

Description: Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA. Attributing observed CO2 variations to human or natural cause is critical to deducing and tracking emissions from observations. We have used in situ CO2, CO, and planetary boundary layer height (PBLH) measurements recorded during the CalNex-LA (CARB et al., 2008) ground campaign of 15 May–15 June 2010, in Pasadena, CA, to deduce the diurnally varying anthropogenic component of observed CO2 in the megacity of Los Angeles (LA). This affordable and simple technique, validated by carbon isotope observations, is shown to robustly attribute observed CO2 variation to anthropogenic or biogenic origin. During CalNex-LA, local fossil fuel combustion contributed up to ~50 % of the observed CO2 enhancement overnight, and ~100 % during midday. This suggests midday column observations over LA, such as those made by satellites relying on reflected sunlight, can be used to track anthropogenic emissions.

Diurnal tracking of anthropogenic CO2 emissions in the Los Angeles basin megacity during spring, 2010

Affek, H., Xu, X., and Eiler, J.: Seasonal and diurnal variations of $^{13}C^{18}O^{16}$O in air: Initial observations from Pasadena, CA, Geochim. Cosmochim. Acta, 71, 5033–5043, 2007.; Bishop, G. A. and Stedman, D. H.: A decade of on-road emissions measurements, Environ. Sci. Technol., 42, 1651–1656, doi:10.1021/es702413b, 2008.; California Air Resources Board (CARB): California emission inventory data almanac, technical report, available online at:, 2008.; California Air Resources Board (CARB), National Oceanic and Atmospheric Administration (NOAA) and California Energy Commission (CEC): CalNex White Paper: Research at the Nexus of Air Quality and Climate Change, 1–12, available online at:, 2008.; Chen, H., Winderlich, J., Hoefer, A., Rella, C. W., Crosson, E., Van Pelt, A. D., Steinbach, J., Kolle, O., Beck, V., Daube, B. C., Gottlieb, E. W., Chow, V. Y., Santoni, G. W., and Wofsy, S. C.: High-accuracy continuous airborne measurements of greenhouse gases (CO2 and CH4) using the cavity ring-down spectroscopy (CRDS) technique, Atmos. Meas. Tech., 3, 375–386, doi:10.5194/amt-3-1113-2010, 2010.; Chinkin, L. R., Coe, D. L., Funk, T. H.,Hafner, H. R., Roberts, P. T., Ryan, P. A., and Lawson, D. R.: Weekday versus weekend activity patterns for ozone precursor emissions in California's South Coast Air Basin, J. Air & Waste Manage. Assoc., 53, 829–843, 2003.; Djuricin, S., Pataki, D. E., and Xu, X.: A comparison of tracer methods for quantifying CO2 sources in an urban region, J. Geophys. Res.-Atmos., 115, D11303, doi:10.1029/2009JD012236, 2010.; EDGAR Project Team: Emission database for global atmospheric research (EDGAR), release version 4.0.,, Eur. Comm. Joint Res. Cent., Brussels, 2009.; Emeis, S. and Schäfer, K.: Remote sensing methods to investigate boundary-layer structures relevant to air pollution in cities, Bound.-Lay. Meteorol., 121, 377–385, doi:10.1007/s10546-006-9068-2, 2006.; Gamnitzer, U., Karstens, U., Kromer, B., Neubert, R. E. M., Meijer, H. A. J., Schroeder, H., and Levin, I.: Carbon monoxide: A quantitative tracer for fossil fuel CO2?, J. Geophys. Res.-Atmos., 111, D22302, doi:10.1029/2005JD006966, 2006.; Gerbig, C., Schmitgen, S., Kley, D., Volz-Thomas, A., Dewey, K., and Haaks, D.: An improved fast-response vacuum-UV resonance fluorescence CO instrument, J. Geophys. Res.-Atmos., 104, 1699–1704, 1999.; GLOBALVIEW-CO: Cooperative Atmospheric Data Integration Project – Carbon Monoxide, CD-ROM, NOAA ESRL, Boulder, Colorado, also available on Internet via anonymous FTP to, Path: ccg/co/GLOBALVIEW], 2009.; Graven, H. D., Guilderson, T. P., and Keeling, R. F.: Observations of radiocarbon in CO2 at La Jolla, California, USA 1992–2007: Analysis of the long-term trend, J. Geophys. Res.-Atmos., 117, D02302, doi:10.1029/2011JD016533, 2012.; Gurney, K. R., Mendoza, D. L., Zhou, Y., Fischer, M. L., Miller, C. C., Geethakumar, S., and de la Rue du Can, S.: High Resolution Fossil Fuel Combustion CO2 Emission Fluxes for th


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