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Measurement report: Evolution and distribution of NH$_3$ over Mexico City from ground-based and satellite infrared spectroscopic measurements

Herrera, Beatriz ; Bezanilla, Alejandro; Blumenstock, Thomas ORCID iD icon 1; Dammers, Enrico; Hase, Frank 1; Clarisse, Lieven; Magaldi, Adolfo; Rivera, Claudia; Stremme, Wolfgang; Strong, Kimberly; Viatte, Camille; Van Damme, Martin; Grutter, Michel
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF), Karlsruher Institut für Technologie (KIT)

Abstract:

Ammonia (NH$_3$) is the most abundant alkaline compound in the atmosphere, with consequences for the environment, human health, and radiative forcing. In urban environments, it is known to play a key role in the formation of secondary aerosols through its reactions with nitric and sulfuric acids. However, there are only a few studies about NH$_3$ in Mexico City. In this work, atmospheric NH$_3$ was measured over Mexico City between 2012 and 2020 by means of ground based solar absorption spectroscopy using Fourier transform infrared (FTIR) spectrometers at two sites (urban and remote). Total columns of NH$_3$ were retrieved from the FTIR spectra and compared with data obtained from the Infrared Atmospheric Sounding Interferometer (IASI) satellite instrument. The diurnal variability of NH$_3$ differs between the two FTIR stations and is strongly influenced by the urban sources. Most of the NH$_3$ measured at the urban station is from local sources, while the NH$_3$ observed at the remote site is most likely transported from the city and surrounding areas. The evolution of the boundary layer and the temperature play a significant role in the recorded seasonal and diurnal patterns of NH$_3$. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000152675
Veröffentlicht am 15.11.2022
Originalveröffentlichung
DOI: 10.5194/acp-22-14119-2022
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1680-7324
KITopen-ID: 1000152675
HGF-Programm 12.11.13 (POF IV, LK 01) Long-term trends of global atmospheric composition
Erschienen in Atmospheric Chemistry and Physics
Verlag European Geosciences Union (EGU)
Band 22
Heft 21
Seiten 14119–14132
Vorab online veröffentlicht am 03.11.2022
Nachgewiesen in Dimensions
Web of Science
Scopus
Globale Ziele für nachhaltige Entwicklung Ziel 3 – Gesundheit und Wohlergehen
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