dor_id: 4132640

506.#.#.a: Público

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

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.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: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM.63

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: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1127/1051

100.1.#.a: Bravo A., H.; Saavedra, M. I.; Torres J., R.; Lomas A., G.; Nava T., D.; Tirado S., D.

524.#.#.a: Bravo A., H., et al. (1988). Particulate Carbon, a Significant Contributor to The Visibility Reduction of Mexico City. Geofísica Internacional; Vol. 27 Núm. 2: Abril 1, 1988; 241-261. Recuperado de https://repositorio.unam.mx/contenidos/4132640

245.1.0.a: Particulate Carbon, a Significant Contributor to The Visibility Reduction of Mexico City

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1988

264.#.1.c: 1988-04-01

653.#.#.a: Partículas de Carbono; concentración; reducción de visibilidad; ecuación de Koschmieder; Ciudad de México; Carbon particles; concentration; visibility reduction; Koschmieder equation; Casco de Santo Tomás; 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-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1127

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1127

041.#.7.h: eng

520.3.#.a: Total particulate elemental carbon concentrations (Ct) incluoing organic volatile (C0 v) and black carbon {Cb), were determined in 92 stored high-volume sampled filters collected during 1982 in a 24 hr sampling period with an alternative schedule. Coarse and fine particulate mass (CFPM) were sampled at the same schedule and site using a modified Anderson sampler. The sampling site "El Casco de Santo Tomas", is located near the Mexico City"s downtown area. The results show that Ct ranged from 14.8 to 98.7 p.g/m3 . The total suspended particulate (TSP) mean concentration was 204 p.g/m3. The Ct. C0v and Cb mean concentrations content in the TSP were 49.87, 32.3 and 16.9 p.g/m3 respectively. The statistical analysis of Ct and Cb on TSP data shows a correlation coefficient of 0.81 and 0.9 respectively; C0v results from: C0v = Ct - Cb· The CFPM mean concentration was 154 p.g/m3 (0.5 p.m mass median diameter), but Ct was not determined. Using both specific light-absorption and light-scattering coefficients estimating procedures reported by several authors, and sulfate and nitrate data from the Tacubaya Observatory sampling station, 5.6 km from the first one, the contribution of the elemental carbon to the estimated visibility reduction was deduced to be near 50%. The estimated visibility using the Koschmicdcr relationship and the extinction coefficient (bext= 7.64 x 1<r"m-1) obtained from the data was 5.10 km. The average visibility reported by the Tacubaya Observatory Station was 6.3 km for the same period.doi: https://doi.org/10.22201/igeof.00167169p.1988.27.2.785

773.1.#.t: Geofísica Internacional; Vol. 27 Núm. 2: Abril 1, 1988; 241-261

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN electrónico: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 241-261

599.#.#.a: 63

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.22201/igeof.00167169p.1988.27.2.785

harvesting_date: 2024-02-23 00:00:00.0

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