Nórton Franciscatto de Paula, Franciano Scremin Puhales, Vagner Anabor, Everson Dal Piva, Ernani de Lima Nascimento


Central Depression, is region of great importance for different activities in Rio Grande do Sul. This area is also characterizedfor the high frequency of fog formation, specially in Santa Maria. To identify fog occurrence, METAR message were used.Furthermore, automatic stations data have employed to eliminate fog events under rain conditions in day and day before theevent. The synoptic analysis was done with final data analysis by NCEP. It was observed that in colder months the events aremost frequent. Moreover, the fog occurence is correlated with anticyclone postion in relation to Santa Maria.


Nevoeiro, variáveis médias, anticiclone.


Bergot, T., Guedalia, D. (1994). Numerical forecasting of radiation fog. part i: Numerical model and sensitivity tests. Monthly Weather Review, 122(6), 1218–1230.

Brown, R., Roach, W. (1976). The physics of radiation fog: II – a numerical study. Quarterly Journal of the Royal Meteorological Society, 102(432), 335–354.

Cotton, W. R., Anthes, R. A. (1989). Storm and Cloud Dynamics. Academic Press, San Diego. Croft, P. J., Pfost, R. L., Medlin, J. M., Johnson, G. A. (1997). Fog forecasting for the southern region: A conceptual model approach. Weather and Forecasting, 12(3), 545–556.

Curry, J. A., Webster, P. J. (1998). Thermodynamics of atmospheres and oceans, vol 65. Academic Press.

Epperly, P. O. (1933). Fog formation and dissipation in the oklahoma city area, 1920 to 1931, inclusive. Monthly Weather Review, 61(9), 267–269.

Gerber, H. (1981). Microstructure of a radiation fog. Journal of the Atmospheric Sciences, 38(2), 454–458.

Koraˇcin, D., Lewis, J., Thompson, W. T., Dorman, C. E., Businger, J. A. (2001). Transition of stratus into fog along the california coast: Observations and modeling. Journal of the atmospheric sciences, 58(13), 1714–1731.

Lima, J. (1982). Previsão de ocorrência de nevoeiro em Porto Alegre: método objetivo. Instituto de proteção ao vôo do Ministério da aeronáutica.

Meyer, M. B., Lala, G. G. (1990). Climatological aspects of radiation fog occurrence at albany, new york. Journal of Climate, 3(5), 577–586.

NCEP (2000). National centers for environmental prediction/national weather service/NOAA. URL, acessado em 22 set 2014.

Petterssen, S. (1939). Some aspects of formation and dissipation of fog. Cammermeyer in Komm.

Piva, E. D., Fedorova, N. (1999). Um estudo sobre a formação de nevoeiro de radiação em Porto Alegre. Revista Brasileira de Meteorologia, 14(2), 47–62.

REDEMET (2013). Rede de meteorologia do comando da aeronáutica. URL, acessado em 30 jan. 2015.

Rogers, R., Yau, M. (1989). A short course in cloud physics, International series in natural philosophy. Butterworth Heinemann, Burlington, MA.

Satyamurty, P., Lima, L. C. E. (1994). Movimento e intensificação de anticiclones extratropicais na região sul americana. Anais do VIII CBMet, 2, 75–77.

Sinclair, M. R. (1996). A climatology of anticyclones and blocking for the southern hemisphere. Monthly Weather Review, 124(2), 245–264.

Taylor, G. (1917). The formation of fog and mist. Quarterly Journal of the Royal Meteorological Society, 43(183), 241–268.

WMO (1995). Manual on the Observation of Clouds and Other Meteors. World Meteorological Organization, Geneva.

Zhang, X., Musson-Genon, L., Dupont, E., Milliez, M., Carissimo, B. (2014). On the influence of a simple microphysics parametrization on radiation fog modelling: A case study during parisfog. Boundary-Layer Meteorology, 151(2), 293–315.


Copyright (c)

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.