13.2 Direct Space-Based Observations of Anthropogenic CO2 Emission Areas from OCO-2 and Comparison with Emission Inventories' Spatial Distribution

Thursday, 11 January 2018: 3:45 PM
Room 18CD (ACC) (Austin, Texas)
Iolanda Ialongo, Finnish Meteorological Institute, Helsinki, Finland; and J. Hakkarainen and J. Tamminen

Anthropogenic CO2 emissions from fossil fuel combustion have large impacts on climate. In order to monitor the increasing CO2 concentrations in the atmosphere, accurate spaceborne observations—as available from the Orbiting Carbon Observatory-2 (OCO-2)—are needed. This work provides direct observation of anthropogenic CO2 from OCO-2 over the main pollution regions: eastern USA, central Europe, and East Asia. This is achieved by deseasonalizing and detrending OCO-2 CO2 observations to derive CO2 anomalies. The spatial distribution of the CO2 anomaly matches the features observed in the maps of the Ozone Monitoring Instrument NO2 tropospheric columns, used as an indicator of atmospheric pollution. The results of a cluster analysis confirm the correlation between CO2 and NO2 spatial patterns.

Furthermore, we compare the distribution of the XCO2 anomalies and various emission inventories in order to evaluate the contribution of different sectors. In particular, we analyze the spatial correlation between the XCO2 anomalies and the EPA Greenhouse Gas Emissions Data from large emission sources in the United States. Also, the spatial distribution of the CO2 anomalies and the EDGAR emission inventory (per sector) are compared.


Hakkarainen, J., I. Ialongo, and J. Tamminen (2016), Direct space-based observations of anthropogenic CO2 emission areas from OCO-2, Geophys. Res. Lett., 43, 11,400–11,406, doi:10.1002/2016GL070885.

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