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  Global patterns of lightning properties derived by OTD and LIS

Beirle, S., Koshak, W., Blakeslee, R., & Wagner, T. (2014). Global patterns of lightning properties derived by OTD and LIS. Natural Hazards and Earth System Sciences, 14(10), 2715-2726. doi:10.5194/nhess-14-2715-2014.

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資料種別: 学術論文

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 作成者:
Beirle, S.1, 著者           
Koshak, W.2, 著者
Blakeslee, R.2, 著者
Wagner, T.1, 著者           
所属:
1Satellite Remote Sensing, Max Planck Institute for Chemistry, Max Planck Society, ou_1826293              
2external, ou_persistent22              

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 要旨: The satellite instruments Optical Transient Detector (OTD) and Lightning Imaging Sensor (LIS) provide unique empirical data about the frequency of lightning flashes around the globe (OTD), and the tropics (LIS), which have been used before to compile a well-received global climatology of flash rate densities. Here we present a statistical analysis of various additional lightning properties derived from OTD /LIS, i.e., the number of so-called "events" and "groups" per flash, as well as the mean flash duration, footprint and radiance. These normalized quantities, which can be associated with the flash "strength", show consistent spatial patterns; most strikingly, oceanic flashes show higher values than continental flashes for all properties. Over land, regions with high (eastern US) and low (India) flash strength can be clearly identified. We discuss possible causes for and implications of the observed regional differences. Although a direct quantitative interpretation of the investigated flash properties is difficult, the observed spatial patterns provide valuable information for the interpretation and application of climatological flash rates. Due to the systematic regional variations of physical flash characteristics, viewing conditions, and/or measurement sensitivities, parametrizations of lightning NOx based on total flash rate densities alone are probably affected by regional biases.

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 日付: 2014
 出版の状態: 出版
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 識別子(DOI, ISBNなど): ISI: 000344729800006
DOI: 10.5194/nhess-14-2715-2014
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出版物名: Natural Hazards and Earth System Sciences
  省略形 :
種別: 学術雑誌
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出版社, 出版地: Katlenburg-Lindau : European Geophysical Society
ページ: - 巻号: 14 (10) 通巻号: - 開始・終了ページ: 2715 - 2726 識別子(ISBN, ISSN, DOIなど): その他: 2195-9269
CoNE: https://pure.mpg.de/cone/journals/resource/2195-9269