Seasonal Variation of Frequency of High Current Lightning Discharges Observed by JLDN

Saito, Mikihisa; Ishii, Masaru; Fujii, Fumiyuki; Matsui, Michihiro

doi:10.1541/ieejpes.132.536

Cited by 9 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to process the maps we used a simple criterion to define winter lightning conditions: temperatures equal or lower than −10 • C at the 700 hPa level (∼ 3 km above mean sea level). This criterion matches the observations by Montanyà et al (2007), Saito et al (2012) and Warner et al (2014) for the analyzed winter flashes and thunderstorms. Temperature data at this pressure level are obtained on a 1 • × 1 • grid from ECMWF Re-Analysis (ERA-Interim).…”

Section: Global Maps Of Winter Lightningsupporting

confidence: 91%

Global distribution of winter lightning: a threat to wind turbines and aircraft

Montanyà

Fabró

Velde

et al. 2016

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Lightning is one of the major threats to multimegawatt wind turbines and a concern for modern aircraft due to the use of lightweight composite materials. Both wind turbines and aircraft can initiate lightning, and very favorable conditions for lightning initiation occur in winter thunderstorms. Moreover, winter thunderstorms are characterized by a relatively high production of very energetic lightning. This paper reviews the different types of lightning interactions and summarizes the well-known winter thunderstorm areas. Until now comprehensive maps of global distribution of winter lightning prevalence to be used for risk assessment have been unavailable. In this paper we present the global winter lightning activity for a period of 5 years. Using lightning location data and meteorological re-analysis data, six maps are created: annual winter lightning stroke density, seasonal variation of the winter lightning and the annual number of winter thunderstorm days. In the Northern Hemisphere, the maps confirmed Japan to be one of the most active regions but other areas such as the Mediterranean and the USA are active as well. In the Southern Hemisphere, Uruguay and surrounding area, the southwestern Indian Ocean and the Tasman Sea experience the highest activity. The maps provided here can be used in the development of a risk assessment.

show abstract

Section: Global Maps Of Winter Lightningsupporting

confidence: 91%

Global distribution of winter lightning: a threat to wind turbines and aircraft

Montanyà

Fabró

Velde

et al. 2016

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…It is known that a negative charge center frequently exists in thunderclouds at about a temperature level of −10 °C regardless of the season . It was also reported that the occurrence of upward flashes from tall structures is deeply related to the height of −10 °C temperature level .…”

Section: Occurrence Of Upward Lightning From Tall Structuresmentioning

confidence: 99%

“…It is known that a negative charge center frequently exists in thunderclouds at about a temperature level of −10 • C regardless of the season [53]. It was also reported that the occurrence of upward flashes from tall structures is deeply related to the height of −10 • C temperature level [54]. By estimating the altitude of −10 • C from aerological data at the Tateno observatory (36.05 • N, 140.13E), which is 48 km northeast from Tokyo Skytree, it has been shown that when the altitude of −10 • C is less than 6000 m, most of lightning flashes to Tokyo Skytree are upward, and vice versa [55].…”

Section: Meteorological Conditions For Upward Lightning Occurrence Upmentioning

confidence: 99%

Lightning striking characteristics to tall structures

Shindo

2018

IEEJ Transactions Elec Engng

View full text Add to dashboard Cite

Recently, very tall structures with heights more than several hundred meters have been constructed all over the world and observation of lightning has been made. The striking characteristics obtained from these observations are reviewed, and conventional and new shielding models are discussed. In addition, future themes of studies to be carried out are proposed. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

show abstract

“…The seasons in which upward lightning strikes are most likely to occur differ from site to site. However, based on the measurement results for lightning discharges accompanied by strong currents , we used only data for December and January as midwinter periods at all sites. Winter lightning strikes also occur in other months, but some lightning strikes occur in the upper air at high temperature, and mixing of data with different properties should be avoided to extract the features of winter lightning.…”

Section: Factors Affecting Increase Rate Of Upward Lightning Strikesmentioning

confidence: 99%

Frequency of Upward Lightning Hits to Wind Turbines in Winter

Saito

Ishii

Ohnishi

et al. 2014

Electrical Engineering Japan

Self Cite

View full text Add to dashboard Cite

SUMMARYIn recent years, frequent damage to wind turbines by winter lightning has been reported in the region along the Sea of Japan. It is a serious finding that lightning hits concentrate on wind turbines in this region. The authors investigated the increase rate of the frequency of lightning hits on wind turbines due to wind turbine construction by using LLS (lightning location system) data. As a result, an experimental formula to estimate the increase rate of the frequency of lightning hits on wind turbines as a function of parameters related to the construction conditions, namely the height of wind turbines, the height above sea level, and the latitude, is proposed. C⃝ 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 190(1): 37-44, 2015; Published online in Wiley Online Library (wileyonlinelibrary.com).

show abstract

Seasonal Variation of Frequency of High Current Lightning Discharges Observed by JLDN

Cited by 9 publications

References 5 publications

Global distribution of winter lightning: a threat to wind turbines and aircraft

Global distribution of winter lightning: a threat to wind turbines and aircraft

Lightning striking characteristics to tall structures

Frequency of Upward Lightning Hits to Wind Turbines in Winter

Contact Info

Product

Resources

About