Real-Time Combination of Radar and Satellite Data for Very-Short-Period Precipitation Forecasting

  • R Brown
  • M Cheng

Summary

Experience has shown that, even with the expanded UK weather radar network, use of satellite data to infer likely areas of precipitation beyond radar range enhances forecast accuracy. An investigation of the satellite rainfall estimation technique used currently, which involves correlating the radar data with Meteosat visible and/or infra-red data, is described and initial results presented. These illustrate the improvement resulting from careful registration of the satellite data and the relative accuracy of a bispectral technique compared to using visible or infra-red data alone. The method of optimising the rain/no rain boundary between satellite classes is discussed in detail and it is concluded that care must be taken in the choice of statistical measure which is maximised. The statistical evaluations are compared with subjective evaluations of the satellite precipitation fields.

Keywords

False Alarm Rate Radar Data Visible Imagery Precipitation Forecast Satellite Class 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. (1).
    BROWN, R. (1987). The use of imagery in the FRONTIERS precipitation nowcasting system. Proc. Workshop on Satellite and Radar Imagery Interpretation, Reading, 20–24 July 1987, 459–472.Google Scholar
  2. (2).
    LOVEJOY, S. and AUSTIN, G.L. (1979). The delineation of rain areas from visible and IR satellite data for GATE and mid-latitudes. Atmos-Ocean, 17, 77–92.CrossRefGoogle Scholar
  3. (3).
    BARRET, E.C and MARTIN, D.W. (1981). The use of satellite data for rainfall monitoring. Academic Press, 340pp.Google Scholar
  4. (4).
    MANIKIAM, B. (1986). Rainfall estimation from satellite data - A review. Vayu MandaI, 10–14.Google Scholar
  5. (5).
    TSONIS, A.A. and ISAAC, G.A. (1985). On a new approach for instantaneous rain area delineation in the midlatitudes using GOES data. J. Climate Appl. Meteor., 24, 1208–1218.CrossRefGoogle Scholar
  6. (6).
    TSONIS, A.A. (1988). Single thresholding and rain area delineation from satellite imagery. J. Appl. Meteor., 27, 1302–1306.CrossRefGoogle Scholar
  7. (7).
    CHERNA, E., BELLON, A., AUSTIN. G.L. and KILAMBI, A. (1985). An objective technique for the delineation and extrapolation of thunderstorms from GOES satellite data. J. Geophys. Res., 90, 6203–6210.CrossRefGoogle Scholar

Copyright information

© ECSC, EEC, EAEC, Brussels and Luxembourg 1990

Authors and Affiliations

  • R Brown
    • 1
  • M Cheng
    • 2
  1. 1.Meteorological OfficeBerksUK
  2. 2.Institute of Atmospheric PhysicsAcademia SinicaBeijingChina

Personalised recommendations