Effect of small urban areas in central Spain on the enhancement of cloud-to-ground lightning activity

Soriano, Luís Rivas; Pablo, Fernando de

doi:10.1016/s1352-2310(02)00204-2

Cited by 55 publications

(52 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the sulphate particles are usually more active in the formation of cloud droplets compared to PM 10 (Seinfeld, 1975), a significant contribution from SO 2 concentration is expected to the enhancement of CG lightning compared with PM 10 concentration. Our results partially correspond to the report of Westcott (1995), but corroborate well the results of Soriano et al (2002). Westcott (1995) has found that large annual values of SO 2 and PM 10 correspond generally to the large values of urban and downwind CG flash.…”

Section: Resultssupporting

confidence: 92%

“…The prevailing wind motion in the Korean peninsula has a clear southwesterly component and, hence, upwind (downwind) areas are located to the southwest (northeast) (Sun and Lee, 2002). In calculating the upwind, urban and downwind CG lightning flash density, we have followed the procedure adopted by Soriano (2002), but the selection of our spatial scale in counting the lightning flash is considerably different from that used by Soriano (2002), who used a spatial scale of 0.1 • latitude×0.1 • longitude. Hence, to accomplish this, the number of CG flashes in blocks, each comprising 10 grid boxes, within the urban area of Seoul city, is counted.…”

Section: Methodsmentioning

confidence: 99%

“…Several studies have been performed after Westcott (1995) to study the effect of an urban area on the initiation and enhancement of CG lightning (e.g. Orville et al, 2001;Soriano and Pablo, 2002). Most of these studies have ascribed the effect to the urban heat island circulation, along with a possible role for air pollution.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characteristics of cloud-to-ground lightning activity over Seoul, South Korea in relation to an urban effect

Kar

Liou

2007

Ann. Geophys.

View full text Add to dashboard Cite

Abstract. Cloud-to-ground (CG) lightning flash data collected by the lightning detection network installed at the Korean Meteorological Administration (KMA) have been used to study the urban effect on lightning activity over and around Seoul, the largest metropolitan city of South Korea, for the period of 1989-1999. Negative and positive flash density and the percentage of positive flashes have been calculated. Calculation reveals that an enhancement of approximately 60% and 42% are observed, respectively, for negative and positive flash density over and downwind of the city. The percentage decrease of positive flashes occurs over and downwind of Seoul and the amount of decrease is nearly 20% compared to upwind values. The results are in good agreement with those obtained by and Westcott (1995). CG lightning activities have also been considered in relation to annual averages of PM 10 (particulate matter with an aerodynamic diameter smaller than 10 µm) and sulphur dioxide (SO 2 ) concentrations. Interesting results are found, indicating that the higher concentration of SO 2 contributes to the enhancement of CG lightning flashes. On the other hand, the contribution from PM 10 concentration has not appeared in this study to be as significant as SO 2 in the enhancement of CG lightning flashes. Correlation coefficients of 0.33 and 0.64 are found between the change in CG lightning flashes and the PM 10 and SO 2 , respectively, for upwind to downwind areas, suggesting a significant influence of the increased concentration of SO 2 on the enhancement of CG flashes.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Characteristics of cloud-to-ground lightning activity over Seoul, South Korea in relation to an urban effect

Kar

Liou

2007

Ann. Geophys.

View full text Add to dashboard Cite

show abstract

“…Figure 6 presents the correlation between the AOD and lightning flash density for JJAS. The results show that the lightning flash density was positively correlated with the AOD (R = 0.84 for June, R = 0.91 for July, R = 0.94 for August and R = 0.9 for September), which is in accordance with some earlier studies [12][13][14][15][16][17][18][19][20][21][22][23][24]. The dependence of the electrical activity and AOD displays a positive correlation, which suggests that the enhanced aerosol loading is one of the important reasons for the increase in lightning activity.…”

Section: Relationship Between Lightning Flash Density and Aodsupporting

confidence: 92%

Total Lightning Flash Activity Response to Aerosol over China Area

et al. 2017

View full text Add to dashboard Cite

Twelve years of measurements of aerosol optical depth (AOD), cloud fraction, cloud top height, ice cloud optical thickness and lightning flash density from 2001 to 2012 have been analyzed to investigate the effect of aerosols on electrical activity over an area of China. The results show that increasing aerosol loading inspires the convective intensity, and then increases the lightning flash density. The spatial distribution of the correlation between aerosol loading and electrical activity shows a remarkable regional difference over China. The high-correlation regions embody the positive aerosol microphysical effect on the intensity of the electrical activity, while the large-scale processes may play the main role in convection development and producing lightning in low-correlation regions.

show abstract

“…After that, several recent studies (Orville et al, 2001;Soriano and Pablo, 2002;Steiger et al, 2002;Naccarato et. al., 2003) have confirmed this result.…”

Section: Introductionmentioning

confidence: 99%

Urban effect on the characteristics of cloud-to-groundlightning over Belo Horizonte-Brazil

Pinto

Gomes

et al. 2004

Ann. Geophys.

View full text Add to dashboard Cite

Abstract. An 8-year climatological analysis (1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996) of lightning network data over Belo Horizonte, a large city located in Southeastern Brazil, and nearby surrounding areas has indicated a significant enhancement of approximately 100% in the negative flash density and of 50% in the positive flash density over and downwind of the city, compared with the other adjacent areas. A decrease of 25% in the percentage of positive flashes was also observed over and downwind of the city. No urban effect was evident in the peak current of both negative and positive flashes. These results are in agreement with the recent results obtained by Steiger et al. (2002) for Houston, except that the strength of the effect is twice larger than in Houston. The reason for this difference is not clear.

show abstract

Effect of small urban areas in central Spain on the enhancement of cloud-to-ground lightning activity

Cited by 55 publications

References 22 publications

Characteristics of cloud-to-ground lightning activity over Seoul, South Korea in relation to an urban effect

Characteristics of cloud-to-ground lightning activity over Seoul, South Korea in relation to an urban effect

Total Lightning Flash Activity Response to Aerosol over China Area

Urban effect on the characteristics of cloud-to-groundlightning over Belo Horizonte-Brazil

Contact Info

Product

Resources

About