Carbon monoxide emissions assessment by using satellite and modeling data: Central Mexico case study

Abstract

This paper quantifies and reduces the differences in emissions from the 2008 inventory with respect to the real ones through the use of satellite observations and modeling. Carbon monoxide column comparisons from the Infrared Atmospheric Sounding Interferometer (IASI) satellite data were made against columns obtained from the WRF-Chem model, during the February month 2011. The analysis was carried out at the satellite passage local time (approximately 10:00 a.m.) over Mexico City. The 2008 national emissions inventory generated by the Ministry of Environment and Natural Resources (SEMARNAT) was employed. An inversion method was applied with the modeled and observed column data. With the above, scaling factors were obtained for 5 regions and the concentration from the model domain boundaries, which were used to update the emissions. The updated emissions were employed in modeling and the result was compared with surface measurements. For Mexico City and the Metropolitan Area, a scaling factor equal to 0.43 was obtained when using the 2008 emissions inventory; For Toluca, Morelos and Puebla, a less than one factor was estimated, while for Hidalgo and the concentration from model boundaries were close to two. The model performance was improved by an increment in the agreement index and a reduction on the mean square error when the updated CO emissions were used. initial results. Geophysical Research Letters, 33: L22806.

Urban XCO2 Gradients From a Dense Network of Solar Absorption Spectrometers and OCO‐3 Over Mexico City

“…UNAM_EMI, anchored in the 2016 Mexico National Inventory, yields hourly anthropogenic CO 2 emissions estimates and is instrumental for air quality management in Mexico City. Developed with support from the Environmental Secretariat of Mexico City (SEDEMA, 2018), its validity and precision have been corroborated through evaluations by Rodríguez Zas and Garcia-Reynoso (2021), along with Pacheco et al (2020). CO 2 emissions have been organized into three main sectors: area sources (residential/commercial), mobile sources (traffic), and point sources (industrial).…”

Mobile mini-DOAS measurements of the outflow of nitrogen dioxide from the Toluca Valley Metropolitan Area, Mexico

“…Studies have also explored the possibility of emission and transport of pollutants from the TVMA to the Mexico City Metropolitan Area (MCMA), specifically regarding precursors that would lead to ozone formation in the MCMA (García-Reynoso et al, 2009). In addition, Maldonado-Pacheco et al (2021) conducted a carbon monoxide emissions inventory assessment of the TVMA using satellite and modeling data, while Borsdorff et al (2020) studied carbon monoxide emissions of Toluca using TROPOMI observations. Because of the lack of more detailed studies and the importance the TVMA has gained during the last decades due to its close vicinity with the MCMA, population growth, increased industrial activities and hosting an international airport with considerable cargo air transport; a field campaign was conducted during January, February and March 2017.…”