dor_id: 10868

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Atmósfera", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Sistema Regional de Información en Línea para Revistas Científicas de América Latina, el Caribe, España y Portugal (Latindex); Scientific Electronic Library Online (SciELO); SCOPUS, Web Of Science (WoS); SCImago Journal Rank (SJR)

561.#.#.u: https://www.atmosfera.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: https://www.revistascca.unam.mx/atm/index.php/atm/index

351.#.#.b: Atmósfera

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: https://www.revistascca.unam.mx/atm/index.php/atm/article/view/43392/42501

100.1.#.a: Bezanilla, Alejandro; Krüger, Arne; Stremme, Wolfgang; Grutter De La Mora, Michel

524.#.#.a: Bezanilla, Alejandro, et al. (2014). Solar absorption infrared spectroscopic measurements over Mexico City: Methane enhancements. Atmósfera; Vol. 27 No. 2, 2014. Recuperado de https://repositorio.unam.mx/contenidos/10868

720.#.#.a: UNAM, PAPIIT-DGAPA, Conacyt

245.1.0.a: Solar absorption infrared spectroscopic measurements over Mexico City: Methane enhancements

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM

264.#.0.c: 2014

264.#.1.c: 2014-02-04

653.#.#.a: FTIR; methane; CH4; solar absortion; Mexico City

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC 4.0 Internacional, https://creativecommons.org/licenses/by-nc/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico editora@atmosfera.unam.mx

884.#.#.k: https://www.revistascca.unam.mx/atm/index.php/atm/article/view/43392

001.#.#.#: 022.oai:ojs.pkp.sfu.ca:article/43392

041.#.7.h: eng

520.3.#.a: In this contribution, the experiment for performing solar-absorption infrared measurements from UNAM"s Atmospheric Observatory (Universidad Nacional Autononal de Mexico) located at the in the University campus in Mexico City is described. The Fourier Transform InfRared (FTIR) spectrometer and solar-tracker system are operating since June 2010 and from the recorded spectra, the total column amounts of several atmospheric gases can be derived. The current study presents the results obtained for methane (CH4), an important pollutant involved in ozone production and a rapid increasing greenhouse gas. The total column densities retrieved with high temporal resolution, present a large dispersion and day-to-day variability. A mean value of 2.92×1019 molecules/cm2 (1.825 ppm), with a 95% confidence interval between 2.66 and 3.19×1019 molecules/cm2, have been obtained for the period 06/2010 to 12/2011. No clear annual cycle can be determined from the monthly means due to the large variability in the measurements, suggesting a significant effect of the local emissions to the natural background concentrations. Some days with extraordinary enhancements are presented and a simple back trajectory analysis points to a predominant source direction from the Northeast of the measurement site. The methane contaminated air masses passing over the UNAM Atmospheric Observatory, however, originate presumably not from one but several dispersed sources. A more detailed analysis with modeling of the dynamics of these air masses is required.

773.1.#.t: Atmósfera; Vol. 27 No. 2 (2014)

773.1.#.o: https://www.revistascca.unam.mx/atm/index.php/atm/index

046.#.#.j: 2021-10-20 00:00:00.000000

022.#.#.a: ISSN electrónico: 2395-8812; ISSN impreso: 0187-6236

310.#.#.a: Trimestral

264.#.1.b: Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM

handle: 00f126a65a8b4c07

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

last_modified: 2023-06-20 16:00:00

license_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode.es

license_type: by-nc

_deleted_conflicts: 2-a2e75973c66aa3e5b79c0e23edcad8d6

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