Abstract
Forecasting visibility is one of the greatest challenges in aviation meteorology. At the same time, high accuracy visibility forecasts can significantly reduce or make avoidable weather-related risk in aviation as well. To improve forecasting visibility, this research links fuzzy logic-based analogue forecasting and post-processed numerical weather prediction model outputs in hybrid forecast. Performance of analogue forecasting model was improved by the application of Analytic Hierarchy Process. Then, linear combination of the mentioned outputs was applied to create ultra-short term hybrid visibility prediction which gradually shifts the focus from statistical to numerical products taking their advantages during the forecast period. It gives the opportunity to bring closer the numerical visibility forecast to the observations even it is wrong initially. Complete verification of categorical forecasts was carried out; results are available for persistence and terminal aerodrome forecasts (TAF) as well in order to compare. The average value of Heidke Skill Score (HSS) of examined airports of analogue and hybrid forecasts shows very similar results even at the end of forecast period where the rate of analogue prediction in the final hybrid output is 0.1–0.2 only. However, in case of poor visibility (1000–2500 m), hybrid (0.65) and analogue forecasts (0.64) have similar average of HSS in the first 6 h of forecast period, and have better performance than persistence (0.60) or TAF (0.56). Important achievement that hybrid model takes into consideration physics and dynamics of the atmosphere due to the increasing part of the numerical weather prediction. In spite of this, its performance is similar to the most effective visibility forecasting methods and does not follow the poor verification results of clearly numerical outputs.
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This research was supported by the European Social Fund (TÁMOP-4.2.1.B-11/2/KMR-2011-0001, Research of Critical Infrastructure Defense). The project was realized through the assistance of the European Union, with the co-financing of the European Social Fund.
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Tuba, Z., Bottyán, Z. Fuzzy logic-based analogue forecasting and hybrid modelling of horizontal visibility. Meteorol Atmos Phys 130, 265–277 (2018). https://doi.org/10.1007/s00703-017-0513-1
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DOI: https://doi.org/10.1007/s00703-017-0513-1