WV images and Low tropopause
CASES
Nuno Moreira ([email protected])
Instituto de Meteorologia, Lisboa, Portugal
2003
Front – Strong activity
20/03/01 12,18,24 UTC
Potential
Vorticity
300 hPa
24h Precipitation in the north of Portugal: Cabril (mountain)=117mm ;
Viana do Castelo (west coast)=78mm ; Floods in Ovar (west coast)
… Front – Strong activity
20/03/01 12 UTC
16.7 W
25.4 W
Top of the clouds
18/12/00 - 06,09,12,15 UTC
Top of the clouds - WV vs. IR
… 18/12/00 - 09,15 UTC
Upper level low
11/08/00 0030-0630 UTC (1,5h)
… Upper level low
11/08/00 0030 and 0630 UTC
Z 300 hPa
… Upper level low
and thunderstorms
Instability Lines – in cold air
11/01/01 06-18 UTC (3 h)
Tropopause Topography
20/8/2000 - 12UTC
… Sloping Tropopause
13/05/00 - 12UTC
… Tropopausa folding
09/06/00 - 06UTC
Cut-off low
27/4/99 - 1230UTC
Cut-off low
27/4/99 - 1200/1230UTC
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Elizaga et al
(1996)
Reference
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Bader, M.J., Forbes, G.S., Grant, J.R., Lilley, R.B. e Waters, A.J., 1995: Images in weather forecasting. Cambridge University Press,
Cambridge, 499 pp.
Bechtold, P., 2000: Atmospheric moist convection: effects, concepts and modelling/forecast. Módulo do Curso “Weather forecasting
in the midlatitudes” realizado na MeteoFrance de 4-15 Dezembro 2000 [ver relatório VAP01/01, Instituto de Meteorologia]
Bluestein, H.B., 1993: Synoptic-Dynamic Meteorology in Midlatitudes, Vol.II: Observations and Theory of Weather Systems. Oxford
University Press, Oxford, 594 pp.
Boyle, J.S. e Bosart, L.F., 1986: Cyclone-Anticyclone couplets over North America. Part II: Analysis of a major cyclone event over
the Eastern United States. Mon. Wea. Rev., 114, 2432-2465.
Elbern, H., Hendricks, J. e Ebel, A., 1998: A climatology of tropopause folds by global analysis. Theor. Appl. Climatology, 59, 181200.
Elizaga, F., Martin, F., Riosalido R., Carretero, O., Elvira, B. e Garcia, A., 1996: Imágenes de vapor de agua: uso en el diagnostico
de niveles altos. IV Simposio Nacional de Predección. Memorial “Alfondo Ascaso”, Madrid, 15-19 Abril 1996, INM.
Grahame, N., 1998: Christmas Eve storm. Review of interesting synoptic cases. Fourth Meeting of the Working Group on
Cooperation between European Forecasters (WG CEF). Set. 98 Comunicação oral.
Hirschberg, P.A. e Fritsch, J.M., 1991b: Tropopause ondulations and the development of extratropical cyclones - Part II: Diagnostic
Analysis and coceptual model. Mon. Wea. Rev., 119, 518-550.
Hoskins, B.J., McIntyre, M.E. e Robertson, A.W., 1985: On the use and significance of isentropic potencial vorticity maps. Quart. J.
Roy. Meteo. Soc., 111, 877-946.
Joly, A e Santurette, P., 2000: Turning dynamical ideas into forecast practice: a proposal for a renewed graphic summary of the
synoptic scale situation. Centre National de Recherches Météorologiques, Service Central d´Exploitation Météorologique. Módulo do
Curso “Weather forecasting in the midlatitudes” realizado na MeteoFrance de 4-15 Dezembro 2000 [ver relatório VAP01/01,
Instituto de Meteorologia]
Reference








Keyser, D. e Shapiro, M.A., 1986: Review – A review of the structure and dynamics of upper-level frontal zones. Mon. Wea. Rev.,
114, 452-499.
Malardel, S., 2000: Weather forecasting in midlatitudes regions - Large scale dynamics in the midlatitudes. Módulo do Curso
“Weather forecasting in the midlatitudes” realizado na MeteoFrance de 4-15 Dezembro 2000 [ver relatório VAP01/01, Instituto de
Meteorologia]
Moreira, N., 1999: Utilização de imagens de vapor de água na avaliação de campos previstos por Modelos numéricos. Instituto de
Meteorologia.
Morgan,M.C. e Nielson-Gammon, 1998: Using tropopause maps to diagnose midlatitude weather systems. Mon. Wea. Rev., 126,
2555-2579.
NOAA, 1991: Water vapor imagery – Interpretation and applications to weather analysis and forecasting. NOAA Technical report
NESDIS 57, National Oceanic and Atmospheric Admnistration, Washington, 213 pp.
Prates, F., 1996: Utilização de cartas de vorticidade potencial isentrópica no diagnóstico dos processos de ciclogénese. Nota
Técnica. Instituto de Meteorologia.
Romero, R., 2000: Sensitivity of a heavy rain producing Western Mediterranean cyclone to embedded potencial vorticity anomalies.
Submetido ao Quarterly Journal of the Royal Meteorological Society.
Santurette, P., 1998: About new products and new methods for synoptic forecast in Meteo-France. Casos de estudo apresentados
no curso sobre previsão na Meteo-France, Dez. 98. Comunicação oral.