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An application determining weather impact on critical infrastructure safety and resilience

100%

Torbicki M. , Drabiński B.

Safety and Reliability of Systems and Processes

2020

tom Summer Safety and Reliability Seminar 2020

231--241

The organisation of an application calculating indicators of the weather impact on the critical infrastructure safety and resilience and reasons for creating it are described. The process of determining the indicators for an exemplary critical infrastructure influenced by extreme weather hazards is conducted in aim to show right usage of the application.

The impact of the weather on inland navigation conditions

100%

Skupień E. , Tubis A. , Bačkalić T.

Zeszyty Naukowe Akademii Morskiej w Szczecinie

2019

tom nr 58 (130)

61--66

The paper presents the impact of the weather on inland navigation conditions. Each mode of transportation depends on the weather, but inland navigation is the one most affected by it. Inland navigation is strongly dependent on the water level in a river bed, which is a result of weather conditions. In Poland the depth of inland waterways is relatively low, but the biggest consideration is the weather which results in the variability of this level. The variability of hydrotechnical conditions results in problems with planning for transportation. It is widely known that water is one of the most important factors in the hydrotechnical conditions of inland navigation and it is directly correlated with the weather. In this paper the authors present the impact of temperature on the duration of the navigation season on the Border Oder, based on research conducted in the years from 2004 to 2018 and the authors also investigated important changes in the weather conditions during last few years. The results showed that the number of navigable days has dropped significantly over the investigated period as a result of changes in the climate.

The chemical composition of oak wood after prolonged influence of variable weather conditions

84%

Krutul D. , Zielenkiewicz T. , Zawadzki J. , Radomski A. , Antczak A. , Drozdzek M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2015

tom 92

Impact of weather on dynamics of plant functional groups in an abandoned limestone grassland

84%

Dzwonko Z. , Loster S.

2011

tom 80

nr 4

We examined to what extend the rate and direction of changes in unmanaged grassland depend on fluctuations in climatic conditions. Vegetation data from permanent plots in a semi-natural grassland in southern Poland collected over 12 years were used. Relations between weather variables, time, and the cover of 41 more frequent species and 14 plant functional groups were analysed. The greatest effect on the dynamics of species and functional groups had precipitation in spring and/or early summer, particularly in the current year. The majority of plant groups were significantly affected also by the temperature in spring and early summer in one of the three previous years. During 12 years, the cover of annuals and biennials, short plants, and plants with small leaves decreased, while the cover of taller plants, plants with larger leaves, and with vegetative spread increased. The analyses suggest that these successional changes were not directly associated with climatic conditions but were affected by them indirectly through interspecific competition. The fluctuations in climatic conditions, chiefly precipitation, had a significant effect on both the composition and the rate of changes in abandoned grassland. The increase in the cover of tall perennial species with broad leaves hindered succession towards woodland despite of the presence of woods in the closed vicinity. It can be expected that during drier periods colonisation of grassland by later successional species could be easier.

A case study - analysis of weather data impact on the disruptions/delays in passenger air traffic

84%

Woda M. , Wątrucka A.

Studia Informatica

2018

tom Vol. 39, nr 1

89--101

The purpose of the research was to develop a method for investigating the impact of weather conditions on delays in passenger aircrafts. The work was carried out in cooperation with Ryanair. The work consisted in developing methods and tools for selecting weather data and integrating them with available data on flight delays for selected airports – statistical methods, regression, decision trees and association rules were used for this purpose.

Celem badań było opracowanie metody analizy wpływu warunków pogodowych na opóźnienia lotów samolotów pasażerskich. Badania były zrealizowane we współpracy z Ryanair. Praca badawcza polegała na opracowaniu metod i narzędzi do selekcji danych pogodowych oraz integracji ich z dostępnymi danymi o opóźnieniach lotów dla wybranych obszarów (wybranych lotnisk w UE) – wykorzystano w tym celu metody statystyczne, regresję, drzewa decyzyjne oraz reguły asocjacyjne.

Effect of tree pruning intensity on the content of mineral components in the sour cherry leaves of ‘Lutówka’

59%

Rutkowski K. , Zydlik Z. , Stachowiak A.

Folia Horticulturae

2018

tom 30

nr 1