Assessment of the total lightning flash rate density (FRD) in northeast Brazil (NEB) based on TRMM orbital data from 1998 to 2013

Abreu, Lizandro Pereira de; Gonçalves, Weber Andrade; Mattos, Enrique Vieira; Albrecht, Rachel I.

doi:10.1016/j.jag.2020.102195

Cited by 15 publications

(19 citation statements)

References 89 publications

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“…Previous studies have suggested the formation of warm clouds over this region [50,52]. This hypothesis is consistent with the low frequency of electrical discharges in practically the entire NEB east coast [53]. Warm clouds have little vertical development and low ice content, which is essential for the electrification process of clouds.…”

Section: Resultssupporting

confidence: 85%

Evaluation of the Integrated Multi-SatellitE Retrievals for the Global Precipitation Measurement (IMERG) Product in the São Francisco Basin (Brazil)

Rodrigues

Silva

Reis

et al. 2021

Water

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The São Francisco River basin is one of the largest in the Brazilian territory. This basin has enormous economic, social and cultural importance for the country. Its water is used for human and animal supply, irrigation and energy production. This basin is located in an area with different climatic characteristics (humid and semiarid) and studies related to precipitation are very important in this region. In this scenario, the objective of this investigation is to present an assessment of rainfall estimated through the Integrated Multi-SatellitE Retrievals for Global Precipitation Measurement (IMERG) product compared with rain gauges over the São Francisco river basin in Brazil. For that, a period from of 20 years and 18 surface weather stations were used to evaluate the product. Based on different evaluation techniques, the study found that the IMERG is appropriate to represent precipitation over the basin. According to the results, the performance of the IMERG product depends on the location where the rain occurs. The bias ranged from −1.67 to 0.34 mm, the RMSE ranged from 5.36 to 10.36 mm and the values of the correlation coefficients between the daily data from the IMERG and rain gauge ranged from 0.28 to 0.61. The results obtained by Student t-test, density curves and regression analysis, in general, show that the IMERG is able to satisfactorily represent rain gauge data. The exception is the eastern portion of the basin, where the product, on average, underestimates the precipitation (p-value < 0.05) and presents the worst statistical metrics.

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Section: Resultssupporting

confidence: 85%

Evaluation of the Integrated Multi-SatellitE Retrievals for the Global Precipitation Measurement (IMERG) Product in the São Francisco Basin (Brazil)

Rodrigues

Silva

Reis

et al. 2021

Water

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“…However, the results found in previous studies were restricted to the Southeast region of Brazil, so in a pioneering study of NEB, Abreu et al [7] reported maximum values of 44.57 flash km −2 year −1 , with the states of Piauí, Maranhão and Bahia having the points with the highest lightning densities, occurring mainly during the summer and autumn in the southern hemisphere.…”

Section: Introductionmentioning

confidence: 90%

“…Thus, meteorological systems that cause intense precipitation are extremely important to fill reservoirs that provide water during the dry period [4,5]. However, some of these systems, especially those composed of clouds with extensive vertical development, high amounts of ice and strong updrafts, have the potential to produce electrical charges inside the clouds and, consequently, lightning [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…The major problems that lightning can cause to society (blackouts, fires, accidents related to transport such as planes and ships, damage to telecommunications systems, deaths of humans and animals) combined with the destructive characteristics of lightning, make it the target of numerous studies developed by the global academic community [7,[9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Lightning provides a direct and accurate indication of convective activity in clouds, which makes its integration with remote sensing cloud observation systems very useful for the diagnosis and prognosis of storm strength [15]. Several papers were published deepening knowledge about the relationship between lightning and the characteristics of precipitation systems, in different locations around the globe, such as China [16], Bangladesh [17], Kolkata-India [18], France [19] and Brazil [7,20,21]. Some studies have indicated that although the relationship between precipitation regime and lightning is highly dependent, a more robust relationship can be found between lightning and microphysics [22].…”

Section: Introductionmentioning

confidence: 99%

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Clouds’ Microphysical Properties and Their Relationship with Lightning Activity in Northeast Brazil

et al. 2021

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The Northeast region of Brazil (NEB) has a high rate of deaths from lightning strikes (18% of the country’s total). The region has states, such as Piauí, with high mortality rates (1.8 deaths per million), much higher than the national rate (0.8) and the NEB rate (0.5). In this sense, the present work analyzes the microphysical characteristics of clouds with and without the occurrence of total lightning. For this purpose, data from the Lightning Imaging Sensor (LIS), TRMM Microwave Imager (TMI) and Precipitation Radar (PR), aboard the Tropical Rainfall Measuring Mission (TRMM) satellite from 1998 to 2013 were used. The TRMM data were analyzed to establish a relationship between the occurrence of lightning and the clouds’ microphysical characteristics, comparing them as a function of lightning occurrence classes, spatial location and atmospheric profiles. A higher lightning occurrence is associated with higher values of ice water path (>38.9 kg m−2), rain water path (>2 kg m−2), convective precipitation (>5 mm h−1) and surface precipitation (>7 mm h−1), in addition to slightly higher freezing level height values. Reflectivity observations (>36 dBZ) demonstrated typical convective profile curves, with higher values associated with classes with higher lightning densities (class with more than 6.8 flash km−2 year−1).

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Effects of Regional Thermodynamic Parameters on Lightning Flash Density as an Indicator of Convective Activity Over Southwest Iran

Rafati¹,

Fattahi²

2022

Pure Appl. Geophys.

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Assessment of the total lightning flash rate density (FRD) in northeast Brazil (NEB) based on TRMM orbital data from 1998 to 2013

Cited by 15 publications

References 89 publications

Evaluation of the Integrated Multi-SatellitE Retrievals for the Global Precipitation Measurement (IMERG) Product in the São Francisco Basin (Brazil)

Evaluation of the Integrated Multi-SatellitE Retrievals for the Global Precipitation Measurement (IMERG) Product in the São Francisco Basin (Brazil)

Clouds’ Microphysical Properties and Their Relationship with Lightning Activity in Northeast Brazil

Effects of Regional Thermodynamic Parameters on Lightning Flash Density as an Indicator of Convective Activity Over Southwest Iran

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