Variability of radiative properties of clouds from aircraft measurements
Ya Kondratyev, K.; Binenko, V.´ I.
Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM
dor_id: 4132626
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351.#.#.b: Geofísica Internacional
351.#.#.a: Artículos
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856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/821/764
100.1.#.a: Ya Kondratyev, K.; Binenko, V.´ I.
524.#.#.a: Ya Kondratyev, K., et al. (1983). Variability of radiative properties of clouds from aircraft measurements. Geofísica Internacional; Vol. 22 Núm. 4: Octubre 1, 1983; 293-310. Recuperado de https://repositorio.unam.mx/contenidos/4132626
245.1.0.a: Variability of radiative properties of clouds from aircraft measurements
502.#.#.c: Universidad Nacional Autónoma de México
561.1.#.a: Instituto de Geofísica, UNAM
264.#.0.c: 1983
264.#.1.c: 1983-10-01
653.#.#.a: Atmósfera; Nubes estratiformes; Propiedades radiativas; Atmosphere; Stratiform clouds; Radiative properties
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/821
001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/821
041.#.7.h: spa
520.3.#.a: Radiative properties of stratiform clouds in different geographical conditions have been discussed using FGGE data. Characteristic features have been described, in particular, of the spectral and total radiative characteristics of clouds over urban and rural areas, Arctic ice, and water bodies depending on the optical thickness of clouds and sun elevation. The dependence of emissivity of clouds in high, middle and tropical latitudes on their thickness has been analyzed. Variability of radiative properties of stratus clouds in different conditions requires further accumulation of observational data and a search for techniques for their parameterization to consider the interaction between clouds and radiation in numerical modeling of the general atmospheric circulation and climate.The results of studies have shown that the total (full spectrum) albedo of clouds is somewhat less than the albedo in the visible, but within an accuracy of about 10 percent they can be considered identical, which is essential for radiative energetics of the atmosphere. Low-level clouds are characterized by shortwave radiation absorption not only in the molecular absorption bands but also in the visible spectrum. The absorption-induced cloud warming is smaller, as a rule, than cooling due to radiative heat exchange, with the exception of clouds over large industrial areas, in the regions of forest, and clouds interacting with optically active aerosols in the case of strong dust transport from deserts.Cloud absorptivity over water, rural areas and ice does not exceed 0.05 . . . 0.15, but for optically thick clouds with r>30 it may reach 0.20 . . . 0.30. The albedo of a cloudy atmosphere, A, over water bodies descreases with increased altitude, with a lapse rate of about 0.003 km-1, and above the sea about 0.01 km-1. At a sun elevation he=15 - 18° the gradient ^A/^he changes its sign which is related to the effect of clouds macro-inhomogeneity at low sun elevations.The results of comparing calculated data with observations of the evolution of advective fog and clouds over ice as well as complex sub-satellite experiments indicate the necessity of consideration of radiative heat flux divergence in a cloudy atmosphere. A decrease has been found of clouds emissivity in high latitudes as compared to that in middle and tropical latitudes. Data are given on the dependence of clouds emissivity on their thickness and level.doi: https://doi.org/10.22201/igeof.00167169p.1983.22.4.859
773.1.#.t: Geofísica Internacional; Vol. 22 Núm. 4: Octubre 1, 1983; 293-310
773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI
022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169
310.#.#.a: Trimestral
300.#.#.a: Páginas: 293-310
264.#.1.b: Instituto de Geofísica, UNAM
doi: https://doi.org/10.22201/igeof.00167169p.1983.22.4.859
handle: 21a9eb79ad38a71d
harvesting_date: 2023-06-20 16:00:00.0
856.#.0.q: application/pdf
file_creation_date: 2008-06-26 17:08:47.0
file_modification_date: 2022-05-26 21:25:57.0
file_creator: K. Ya. Kondratyev
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245.1.0.b: Variability of radiative properties of clouds from aircraft measurements
last_modified: 2023-06-20 16:00:00
license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es
license_type: by-nc-sa
Ya Kondratyev, K.; Binenko, V.´ I.
Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM
Ya Kondratyev, K., et al. (1983). Variability of radiative properties of clouds from aircraft measurements. Geofísica Internacional; Vol. 22 Núm. 4: Octubre 1, 1983; 293-310. Recuperado de https://repositorio.unam.mx/contenidos/4132626