A Guidebook for Airport Winter Operations (2015) / Chapter Skim
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From page 27... ...
27 Historical Winter Storm Event Data An airport operator's winter operations capabilities are rarely questioned, except when they are overwhelmed by a significant winter storm event and the impacts are felt by the airport, its stakeholders, and the traveling public. This can occur at airports of any size.
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From page 28... ...
28 A Guidebook for Airport Winter Operations how meteorological data from historical winter storm events, or summaries of statistical analyses of these data, can offer the following benefits: • Aligning performance targets with specific winter event conditions; • Qualifying targeted winter event conditions to facilitate a shared understanding of the investment in infrastructure, equipment, staff, and operating procedures required to achieve performance goals; • Facilitating airport operator and stakeholder understanding of the statistical frequency that future winter storm events may exceed the airport's winter operations capabilities; • Facilitating airport operator and stakeholder risk-based decision making on the acceptability of the airport's winter operations capabilities and associated operational implications; • Comparing past seasonal performance outcome and efficiency measurements to past winter storm events; and • Comparing recent winter storm events to ranked past events to understand relative magnitude. 5.2 Meteorological Data Sources Meteorological data are widely available for most geographic regions across the United States.
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From page 29... ...
Historical Winter Storm Event Data 29 from both databases is available in Appendix A For statistical calculations of winter storm event frequency, as described later in this chapter, a large dataset of hourly records spanning at least 10 years is required.
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From page 30... ...
30 A Guidebook for Airport Winter Operations period should be longer than the intermittent dry periods that may occur during a winter storm event. ACRP Report 81: Winter Design Storm Factor Determination for Airports suggests that geographically driven inter-event periods typically range between 3 and 24 hours (11, p.
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From page 31... ...
Historical Winter Storm Event Data 31 – Average hourly icing intensity; – Maximum hourly icing intensity; – Total event liquid precipitation accumulation; – Average hourly liquid precipitation intensity; – Average hourly wind speed; – Average hourly prevailing wind direction; – Average hourly visibility; – Minimum hourly visibility; – Average hourly temperature; – Maximum hourly temperature; and – Minimum hourly temperature.
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From page 32... ...
32 A Guidebook for Airport Winter Operations value first. This event would receive a ranking of 1; then rank the remaining events by total event snowfall in descending order of magnitude until all of the data are ranked storm event data.
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