Local and global impacts on the fair-weather electric field in Israel

被引：47
作者：
Yaniv, Roy [1 ]
Yair, Yoav [2 ,3 ]
Price, Colin [1 ]
Katz, Shai [1 ]
机构：
[1] Tel Aviv Univ, Dept Geosci, IL-69978 Tel Aviv, Israel
[2] Interdisciplinary Ctr IDC, Sch Sustainabil, Herzliyya, Israel
[3] Open Univ, Dept Life & Nat Sci, Raanana, Israel
来源：
ATMOSPHERIC RESEARCH | 2016年 / 172卷
基金：
以色列科学基金会;
关键词：
Fair weather electricity; Global electric circuit; Carnegie curve; ATMOSPHERIC ELECTRICITY; CIRCUIT;
D O I：
10.1016/j.atmosres.2015.12.025
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
Ground-based measurements of the vertical electric field (Ez or potential gradient) during fair weather days in the Negev desert, southern Israel are presented for the period June 2013-July 2015. We show results of the diurnal variation of Ez on seasonal and annual time scales, and make comparisons with the well-known Carnegie curve. We show a positive correlation between the diurnal Ez values and the number of global thunderstorm clusters on the same days. However, the diurnal Ez curves observed in the Negev desert show a local morning peak (8-10 UT) that is missing from the Carnegie Curve, but observed in other land-based Ez data from around the world. The morning peak is assumed to be a local effect and shown to correlate with a peak in the local aerosol loading in the lower atmosphere due to the increase in turbulence and mixing caused by solar heating in the morning hours. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：119 / 125
页数：7
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