Temporal rainfall fluctuations in Israel and their possible link to urban and air pollution effects

Halfon, Noam; Levin, Zev; Alpert, Pinhas

doi:10.1088/1748-9326/4/2/025001

Cited by 44 publications

(29 citation statements)

References 36 publications

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“…In general, results from the metropolitan meteorological experiment have shown that during the summer months, urban effects lead to increased precipitation at distance of 30e75 km away from the city center. This finding has been confirmed in many previous studies (Landsberg, 1970;Sanderson and Gorski, 1978;Bornstein and Lin, 2000;Shepherd et al, 2002;Shepherd, 2005;Shepherd, 2006;Mote et al, 2007;Hand and Shepherd, 2009;Halfon et al, 2009). However, using satellite data that reveals plumes of reduced cloud particle size and suppressed precipitation, Rosenfeld (2000) demonstrated that urban and industrial air pollution can prevent precipitation in urban areas.…”

Section: Introductionsupporting

confidence: 74%

Urbanization effect on precipitation over the Pearl River Delta based on CMORPH data

Chen

Yun

et al. 2015

Advances in Climate Change Research

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Based on the satellite data from the Climate Prediction Center morphing (CMORPH) at very high spatial and temporal resolution, the effects of urbanization on precipitation were assessed over the Pearl River Delta (PRD) metropolitan regions of China. CMORPH data has an accurate estimate of the precipitation features over the PRD. Compared to the surrounding rural areas, the PRD urban areas experience fewer and shorter precipitation events with a lower precipitation frequency (ratio of rainy hours, about 3 days per year less); however, short-duration heavy rain events play a more significant role over the PRD urban areas. Afternoon precipitation is much more pronounced over the PRD urban areas than the surrounding rural areas, which is probably because of the increase in short-duration heavy rain over urban areas.

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Section: Introductionsupporting

confidence: 74%

Urbanization effect on precipitation over the Pearl River Delta based on CMORPH data

Chen

Yun

et al. 2015

Advances in Climate Change Research

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“…The observed decreasing trend in rain frequency along Hengduan Mountain reflects the impacts of enhanced aerosols on the orographic precipitation (Givati and Rosenfeld, 2004;Rosenfeld et al, 2007). In the upwind region, the decreasing trend of rain frequency coincided well with the increasing trend in coarse mode AOD (Alpert et al, 2008;Halfon et al, 2009;van den Heever and Cotton, 2007). Also as shown in Fig.…”

Section: Resultssupporting

confidence: 59%

“…Human-induced climate change has caused a redistribution of precipitation (Alpert et al, 2008;Changnon et al, 1981;Halfon et al, 2009;Lowry, 1998;van den Heever and Cotton, 2007;. Besides the greenhouse gasesCorrespondence to: Q.…”

Section: Introductionmentioning

confidence: 99%

Spatial features of rain frequency change and pollution and associated aerosols

et al. 2011

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Abstract.A spatial-temporal analysis has been conducted using satellite observed distributions of rain frequency, NO 2 concentration and aerosol, with focus on the spring season in East Asia. As NO 2 is a key precursor of secondary aerosols, especially in urban areas, an increase of NO 2 emission is generally accompanied by an increase of fine aerosol particles. Comparison between trends in rain frequency and in precipitation amount shows that the changes in precipitation are more due to changes in precipitation occurrence than in precipitation amount. The overall feature emerged from the region-by-region analyses is that there is an inverse relationship between the rain frequency and the pollution and associated aerosols at continental scale in spring. The change in rain frequency is associated with changes in pollution-produced aerosols and long-range transport mineral dust. The inverse relationship at large temporal and spatial scales illustrates potential climatological consequence of changed pollution and aerosols on precipitation. Due to relatively short duration of observation and the potential uncertainty and bias associated with satellite measurements, more robust longer-term statistical study at various temporal and spatial scales and detailed modeling investigation are warranted to understand the physical causality of observed relationship between the rain frequency and the pollution and associated aerosols.

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“…However, the magnitude and even sign of the effect that decreased droplet sizes has on precipitation is less clear (Stephens and Feingold, 2009;Levin and Cotton, 2008). Some conclude that the aerosol influence on precipitation is small or even negligible (e.g., Alpert et al, 2008;Halfon et al, 2009;Schultz et al, 2007). Others find an effect (e.g.…”

Section: Introductionmentioning

confidence: 99%

Weekly cycles in precipitation and other meteorological variables in a polluted region of Europe

Stjern

2011

Atmos. Chem. Phys.

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Abstract. Weekly cycles in aerosol concentration and corresponding cycles in precipitation have been reported over Europe, but results are conflicting. To obtain a large potential effect of aerosols on precipitation the focus will here be on a highly polluted region on the borders between Germany, Poland and the Czech Republic. Meteorological parameters from 30 surface stations in a mix of urban, rural and remote locations were analyzed for the time period 1983-2008, using three different tests: the Kruskal-Wallis test, a spectral analysis and a comparison of the regular 7-day week to constructed 6-and 8-day weeks. A clear and statistically significant weekly cycle will be expected to pass all three tests. Precipitation amount as well as meteorological variables associated with convective conditions, such as the frequency of heavy precipitation events and observations of rain showers, showed two-peak weekly cycles with maxima on Tuesdays and during weekends. The amplitudes of the weekly cycles were in many cases larger for the heavily polluted 1983-1987 period than for the cleaner 2004-2008 period, but were equally often largest in the cleaner period. Moreover, of all the variables, periods and seasons investigated, the weekly cycles were statistically significant only for summertime values of light precipitation frequency and cloud amount, and only by one of the three tests applied (the Kruskal-Wallis test). Conclusively, clear weekly cycles in meteorological variables were not found in this polluted region of Europe.

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Temporal rainfall fluctuations in Israel and their possible link to urban and air pollution effects

Cited by 44 publications

References 36 publications

Urbanization effect on precipitation over the Pearl River Delta based on CMORPH data

Urbanization effect on precipitation over the Pearl River Delta based on CMORPH data

Spatial features of rain frequency change and pollution and associated aerosols

Weekly cycles in precipitation and other meteorological variables in a polluted region of Europe

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