On the impact of urbanization on summertime thunderstorms in Atlanta: Two numerical model case studies

Shem, W.; Shepherd, J. Marshall

doi:10.1016/j.atmosres.2008.09.013

Cited by 241 publications

(176 citation statements)

References 33 publications

Supporting

Mentioning

163

Contrasting

Unclassified

Order By: Relevance

“…Lei et al (2008)'s analysis of a record heavy rain event over Mumbai revealed that localized convection and heavy rainfall in and around Mumbai may be enhanced by convergence associated with the urban circulation. Similar results were reported by Niyogi et al (2006), Shem and Shepherd (2008), and Shepherd et al (2009) for warm season convection and rainfall over Oklahoma City, Oklahoma; Atlanta, Georgia and Houston Texas, respectively. These results are relevant in this study because they suggest that preexisting or largescale forced (e.g.…”

Section: Discussionsupporting

confidence: 76%

“…Cotton and Pielke (2007, Chapter 5;Pielke et al, 2007, Section 7) summarize numerous studies as to how urbanization alters rainfall patterns as a result of mesoscale circulations and through changes in convective available potential energy (CAPE). Moreover, recent research continues to show credible evidence that surface temperature increases (Kalnay and Cai, 2003), cloud enhancement (Inoue et al, 2004), and precipitation anomalies (Hand and Shepherd, 2009;Shem and Shepherd, 2009;Shepherd et al, 2009) may be linked to urban environments.…”

Section: Introductionmentioning

confidence: 99%

“…Spatial variations in the CAPE and CIN and in the mesoscale circulations that result from landscape heterogeneity, such as from urbanization, can focus on deep cumulus convection (Avissar and Liu 1996). Niyogi et al (2006), Shem and Shepherd (2008) and Shepherd et al (2009), using coupled atmosphereland models, quantified the relative changes in sensible and latent heat fluxes as a function of urban land cover for Oklahoma City, Atlanta and Houston respectively. Enhanced sensible heat flux was likely one factor related to the resolved urban-induced precipitation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Urbanization signature in the observed heavy rainfall climatology over India

Kishtawal

Niyogi

Tewari

et al. 2009

Intl Journal of Climatology

295

176

View full text Add to dashboard Cite

ABSTRACT:We assess the urbanization impacts on the heavy rainfall climatology during the Indian summer monsoon. While a number of studies have identified the impact of urbanization on local precipitation, a large-scale assessment has been lacking. This relation between urbanization and Indian monsoon rainfall changes is investigated by analyzing in situ and satellite-based precipitation and population datasets. Using a long-term daily rainfall dataset and high-resolution gridded analysis of human population, this study showed a significantly increasing trend in the frequency of heavy rainfall climatology over urban regions of India during the monsoon season. Urban regions experience less occurrences of light rainfall and significantly higher occurrences of intense precipitation compared to nonurban regions. Very heavy and extreme rainfall events showed increased trends over both urban and rural areas, but the trends over urban areas were larger and statistically more significant. Our analysis suggests that there is adequate statistical basis to conclude that the observed increasing trend in the frequency of heavy rainfall events over Indian monsoon region is more likely to be over regions where the pace of urbanization is faster. Moreover, rainfall measurements from satellites also indicate that urban areas are more (less) likely to experience heavier (lighter) precipitation rates compared to those in nonurban areas. While the mechanisms causing this enhancement in rainfall remain to be studied, the results provide the evidence that the increase in the heavy rainfall climatology over the Indian monsoon region is a signature of urban-induced rainfall anomaly.

show abstract

Section: Discussionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Urbanization signature in the observed heavy rainfall climatology over India

Kishtawal

Niyogi

Tewari

et al. 2009

Intl Journal of Climatology

295

176

View full text Add to dashboard Cite

show abstract

“…The UHI effects on mesoscale circulation can be ob served in convective precipitation (Shepherd 2005). In the past decade, numerous studies have reported that urban morphological parameters can considerably influence precipitation variability (Ikebuchi et al 2007, Shem & Shepherd 2009, Niyogi et al 2011, Hu et al 2012, Willems et al 2012, Chen et al 2015. The possible mechanism leading to the discrepancy in the precipitation of urban areas and that of their surrounding areas has been discussed by Shepherd (2005) as being (1) an increased convergence due to extended surface roughness, (2) destabiliza tion caused by UHI perturbations of the planetary boundary layer, or (3) enhanced aerosols in an urban environment for cloud condensation nuclei sources.…”

Section: Introductionmentioning

confidence: 99%

Urban impacts on air temperature and precipitation over The Netherlands

Golroudbary¹,

Zeng²,

Mannaerts³

et al. 2018

Clim. Res.

View full text Add to dashboard Cite

The detection of changes in the weather of urban areas is an important issue for understanding the impact of weather on human lives. Five years of basic weather observations (2011−2015) from automatic and amateur networks across The Netherlands were used to investigate the urban effects on meteorological parameters with a focus on temperature (e.g. urban heat island [UHI]) and precipitation. Representative stations were selected based on metadata and a set of criteria for data quality control. An hourly analysis indicates that UHIs are a nocturnal phenomenon in The Netherlands and are more prominent after sunset, when they exceed 2°C. A seasonal analysis shows that UHIs occur in all seasons during the year, with the most significant UHI occurring in the summer. Furthermore, the differences in the precipitation of urban and rural areas were shown to be greatest after sunrise during the day. The maximum hourly UHI and hourly precipitation distributions were analyzed using a generalized extreme value model. The occurrences of maximum precipitation are likely to be more frequent at urban stations than at the nearby rural stations. Additionally, the distinct seasonal cycle of precipitation that is dependent on the UHI demonstrates that the maximum UHI and precipitation occurred in the summer. Our results indicate that the UHI and precipitation enhancements in Dutch urban residential areas, as obtained from the data of weather amateurs, are in agreement with the results presented in the literature, and that 7% more precipitation occurs in cities than in rural areas.

show abstract

“…Variability in spatial patterns in precipitation can be due to factors such as topography (McCrary, 2011), the variable distribution of precipitation from convective thunderstorms, and proximity and orientation to urban heat islands (Bornstein and Lin, 2000;Dixon and Mote, 2003;Mote and others, 2007;Shem and Shepherd, 2009) fig. 14).…”

Section: Climate and Precipitationmentioning

confidence: 99%