Measurement report: Spatiotemporal variability  of peroxy acyl nitrates (PANs) over Mexico City  from TES and CrIS satellite measurements

Shogrin, Madison J.; Payne, Vivienne H.; Kulawik, Susan S.; Miyazaki, Kazuyuki; Fischer, Emily V.

doi:https://doi.org/10.5194/acp-23-2667-2023

Articles | Volume 23, issue 4

https://doi.org/10.5194/acp-23-2667-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-2667-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 4

Measurement report

|

27 Feb 2023

Measurement report |

| 27 Feb 2023

Measurement report: Spatiotemporal variability of peroxy acyl nitrates (PANs) over Mexico City from TES and CrIS satellite measurements

Madison J. Shogrin, Vivienne H. Payne, Susan S. Kulawik, Kazuyuki Miyazaki, and Emily V. Fischer

Supplement

https://doi.org/10.5194/acp-23-2667-2023-supplement

Data sets

TROPESS CrIS-SNPP L2 Peroxyacetyl Nitrate for Mexico City, Summary Product V1 K. W. Bowman https://doi.org/10.5067/YTO4AV07QQOW

TROPESS CrIS-SNPP L2 Peroxyacetyl Nitrate for Mexico City, Standard Product V1 K. W. Bowman https://doi.org/10.5067/PECEC1AZ5R1J

QA4ECV NO2 tropospheric and stratospheric vertical column data from OMI (Version 1.1) K. F. Boersma, H. Eskes, A. Richter, I. De Smedt, A. Lorente, S. Beirle, J. Van Geffen, E. Peters, M. Van Roozendael, and T. Wagner https://doi.org/10.21944/qa4ecv-no2-omi-v1.1

QA4ECV HCHO tropospheric column data from OMI (Version 1.1) I. De Smedt, H. Yu, A. Richter, S. Beirle, H. Eskes, K. F. Boersma, M. Van Roozendael, J. Van Geffen, A. Lorente, and E. Peters https://doi.org/10.18758/71021031

Hole-filled seamless SRTM data V4 A. Jarvis, H. I. Reuter, A. Nelson, and E. Guevara https://srtm.csi.cgiar.org

MODIS/Aqua+Terra Thermal Anomalies/Fire locations 1km FIRMS V006 and V0061 (Vector data) LANCE FIRMS https://doi.org/10.5067/FIRMS/MODIS/MCD14ML

VIIRS (S-NPP) I Band 375 m Active Fire Product NRT (Vector data) LANCE FIRMS https://doi.org/10.5067/FIRMS/VIIRS/VNP14IMGT_NRT.002

TES/Aura L2 Peroxyacyl Nitrate Nadir Special Observation V007 NASA/LARC/SD/ASDC https://doi.org/10.5067/AURA/TES/TL2PANNS_L2.007

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Short summary

We evaluate the spatiotemporal variability of peroxy acyl nitrates (PANs), important photochemical pollutants, over Mexico City using satellite observations. PANs exhibit a seasonal cycle that maximizes in spring. Wildfires contribute to observed interannual variability, and the satellite indicates several areas of frequent outflow. Recent changes in NO_x emissions are not accompanied by changes in PANs. This work demonstrates analysis approaches that can be applied to other megacities.