A Field Study of Atmospheric Icing Analysis in a Complex Terrain of the High North

Abstract

Analyses of atmospheric icing events hold the key for computing the significant parameters leading to icing load calculations. In the cold regions of the high north, atmospheric icing loads on structures become important when it comes to design and safety of infrastructures. Furthermore, icing load calculations over a certain period of time provide a vital input for designers to improve the safety of structures. Patterns of icing events can be evaluated in correlation with other meteorological parameters such as atmospheric temperature, relative humidity and wind speed to better estimate icing loads. A field study has been performed in the complex terrain of northern Norway, by the atmospheric icing research team of Narvik University College, where customized meteorological atmospheric ice monitoring stations were installed to study atmospheric icing events in relation with the associated weather parameters. The meteorological parameters of three different sites in the vicinity of Narvik (68°25′14′ N17°33′36′ E) were collected, sorted, averaged to standardized timeline and further validated with recordings of weathers parameters obtained from the national weather forecasts, where a good agreement was found. Analyses were mainly performed between accreted ice loads and associated meteorological parameters. The results presented can be used as base for the development of more detailed mathematical models for the better prediction of atmospheric icing events in complex terrains.

A Classification Method for Transmission Line Icing Process Curve Based on Hierarchical K-Means Clustering

“…However, it does not mention other types of icing evolution while we achieve a more detailed and complete result in this wok. Rashid [37] studies the atmospheric icing in a complex terrain and plots an evolution curve of the daily average ice load growth based on the records within a period of 31 days. However, the measurement object may not be fixed as it considers the average ice load in a region while the present paper focuses on the wire.…”

“…In the field of aircraft industry, the degradation of aircraft due to ice accretion on aircraft wings is a major concern, thus the study of the icing evolution makes sense to the detection and de-icing system [33,34]. In the field of atmospheric icing, people also concentrate on the entire icing process, because it can be used as a base for development of more detailed prediction models and the icing load over a certain period of time can provide a vital input for designers to improve the safety of structures [35][36][37].…”

Criteria-Based Fuzzy Logic Risk Analysis of Wind Farms Operation in Cold Climate Regions

“…[57] revealed that the n of registered birds migrating through the WF area was low, where the average num Risk 4 (Ice throw). A field study shows that the daily intensity of icing in Narvik, a city close to the WF, is approximately 14.5-18.5 kg/m 2 during January, February, and March, as shown in Figure 11 [56]; those measurements can be assumed close enough to be applicable to the site under consideration. This indicates a light icing intensity with site icing index for the WF site, according to Table 1.…”

Smart Solution to Icing Accretion Problems

“…Data include environmental information (pressure, temperature, humidity and wind speed and direction) at the specified location and information on the specific studied phenomenon such atmospheric icing [1]. Wind profiles are closely related with the terrain type and complexity of the topology [1,2]. In the case of ice accretion on wire, relating to instrument performance, the data include ice load, ice type, register of real time appearance of the ice, tension and torsion of the wire elements, electrical variables like electrical current, resistance (when applied) and power loss.…”