Urban effects on convective precipitation in Mexico city

Jáuregui, Ernesto; Romales, Ernesto

doi:10.1016/1352-2310(96)00041-6

Cited by 199 publications

(125 citation statements)

References 12 publications

Supporting

Mentioning

105

Contrasting

Unclassified

Order By: Relevance

“…These factors are responsible for heavy storms of convective nature in the developed mega-cities. A lot of studies have been carried out providing evidence that UHI is associated with convective precipitation in Atlanta (Bornstein and Lin, 2000), in Mexico city (Jauregui and Romales, 1996), in Tel Aviv (Goldreich and Manes, 1979), in Beijing City (Guo et al, 2006), in Tokyo (Yonetani, 1982) in London (Atkinson, 1971) and in Ankara (Cicek and Turkoglu, 2005).…”

Section: Resultsmentioning

confidence: 99%

On extreme daily precipitation totals at Athens, Greece

Nastos

Zerefos

2007

Adv. Geosci.

View full text Add to dashboard Cite

Abstract. The paper studies changes in daily precipitation records at the National Observatory, Athens, during the period 1891-2004. This is the longest available time series of precipitation for Greece. The results show that both the shape and scale parameter of a fitted two parameter gamma distribution for the last two decades do show a significant difference of these parameters, when compared to any previous period from the 1890s through the 1970s. Also important changes are observed in daily precipitation totals exceeding various thresholds such as 10, 20, 30 and 50 mm. More specifically, a negative trend in the number of wet days (remarkable after 1968) and a positive trend in extreme daily precipitation are evident. The changes of heavy and extreme precipitation events in this part of SE Europe have significant environmental consequences which cause considerable damage and loss of life.

show abstract

Section: Resultsmentioning

confidence: 99%

On extreme daily precipitation totals at Athens, Greece

Nastos

Zerefos

2007

Adv. Geosci.

View full text Add to dashboard Cite

show abstract

“…Latha and Badarinath (2005b) comment on solar radiation attenuation due to aerosols in Hyderabad. Rasul et al (2004) in Islamabad and Jauregui and Romales (1996) in Mexico City have analysed heavy rain events and long-term precipitation increase and Shepherd (2006) in Phoenix and Riyadh urban induced rainfall in arid cities. Humidity and evaporation in relation to the UHI intensity and other climatic variables have been explored in Mexico City (Jauregui and Luyando, 1998) and in relation to vegetation in Gaborone (Jonsson, 2004).…”

Section: Wind Radiation Moisture Rain and Carbon Dioxidementioning

confidence: 99%

Review of urban climate research in (sub)tropical regions

Roth

2007

Intl Journal of Climatology

337

210

View full text Add to dashboard Cite

Abstract:Over the last 50 years the developing world, much of which is located in (sub)tropical regions, has seen a dramatic growth of its urban population associated with serious degradation of environmental quality. The total number of (sub)tropical urban climate studies, however; is still small (<20% of all urban climate studies). The available work is further biased towards descriptive studies rather than process work that seeks to indicate the physical climatology of (sub)tropical cities. The available results allow for a preliminary comparison with data from temperate latitudes. Urban heat island (UHI) intensities are generally lower compared to those of temperate cities with comparable population and show a seasonal variation with lower (higher) intensities during the wet (dry) season. (Sub)tropical population-based relations may exist but insufficient appropriate data is available to confirm a logarithmic relationship or systematic differences between different climate types. The (sub)tropical energy balance studies are biased towards dry, clear sky conditions. The amount of net radiation dissipated by sensible heat during daytime is about 40% which is similar to values observed in (sub)urban areas of cities located in temperate climates. Energy partitioning is modulated by water availability and higher percentage of vegetation promotes latent heat flux at the expense of surface heat storage. The apparent strong influence of vegetation and water availability on the energy partitioning irrespective of the climate type, suggests vegetation to be an effective means to reduce heat storage uptake during daytime and hence has the potential to effectively mitigate the nocturnal heat island. It is important to ensure that the rapidly expanding cities of the developing world incorporate climatological concerns in their design to provide a better living and working environment for a large segment of the world's inhabitants. Copyright  2007 Royal Meteorological Society KEY WORDS tropical urban climatology; tropical urban heat island; tropical urban energy balance

show abstract

“…Lin et al (2006) found evidence that high biomass burning-derived aerosols were correlated with elevated cloud top heights, large anvils and more rainfall on the basis of satellite observations over the Amazon basin. Enhanced rainfall in the coastal northwestern Atlantic region (Cerveny et al, 1998) and downwind of the Mexico City urban area (Jauregui and Romales, 1996) and paper mills (Eagen et al, 1974) is attributed to the effects of giant CCN. However, it is impossible to evaluate the AIE with observations directly, because the AIE is traditionally estimated on the basis of the difference in model results between the present day and pre-industrial times, and the observational records (satellite and other long-term records) are not long enough to characterize conditions during the pre-industrial times (IPCC, 2007).…”

Section: Introductionmentioning

confidence: 99%

Aerosol indirect effect on the grid-scale clouds in the two-way coupled WRF–CMAQ: model description, development, evaluation and regional analysis

Mathur

Pleim

et al. 2014

Atmos. Chem. Phys.

View full text Add to dashboard Cite

Abstract. This study implemented first, second and glaciation aerosol indirect effects (AIE) on resolved clouds in the two-way coupled Weather Research and Forecasting Community Multiscale Air Quality (WRF-CMAQ) modeling system by including parameterizations for both cloud drop and ice number concentrations on the basis of CMAQpredicted aerosol distributions and WRF meteorological conditions. The performance of the newly developed WRF-CMAQ model, with alternate Community Atmospheric Model (CAM) and Rapid Radiative Transfer Model for GCMs (RRTMG) radiation schemes, was evaluated with observations from the Clouds and the See http://ceres.larc. nasa.gov/. Earth's Radiant Energy System (CERES) satellite and surface monitoring networks (AQS, IMPROVE, CASTNET, STN, and PRISM) over the continental US (CONUS) (12 km resolution) and eastern Texas (4 km resolution) during August and September of 2006. The results at the Air Quality System (AQS) surface sites show that in August, the normalized mean bias (NMB) values for PM 2.5 over the eastern US (EUS) and the western US (WUS) are 5.3 % (−0.1 %) and 0.4 % (−5.2 %) for WRF-CMAQ/CAM (WRF-CMAQ/RRTMG), respectively. The evaluation of PM 2.5 chemical composition reveals that in August, WRF-CMAQ/CAM (WRF-CMAQ/RRTMG) consistently underestimated the observed SO 2− 4 by −23.0 % (−27.7 %), −12.5 % (−18.9 %) and −7.9 % (−14.8 %) over the EUS at the Clean Air Status Trends Network (CAST-NET), Interagency Monitoring of Protected Visual Environments (IMPROVE) and Speciated Trends Network (STN) sites, respectively. Both configurations (WRF-CMAQ/CAM, WRF-CMAQ/RRTMG) overestimated the observed mean organic carbon (OC), elemental carbon (EC) and and total carbon (TC) concentrations over the EUS in August at the IMPROVE sites. Both configurations generally underestimated the cloud field (shortwave cloud forcing, SWCF) over the CONUS in August due to the fact that the AIE on the subgrid convective clouds was not considered when the model simulations were run at the 12 km resolution. This is in agreement with the fact that both configurations captured SWCF and longwave cloud forcing (LWCF) very well for the 4 km simulation over eastern Texas, when all clouds were resolved by the finer resolution domain. The simulations of WRF-CMAQ/CAM and WRF-CMAQ/RRTMG show dramatic improvements for SWCF, LWCF, cloud optical depth (COD), cloud fractions and precipitation over the ocean relative to those of WRF default cases in August. The model performance in September is similar to that in August, except for a greater overestimation of PM 2.5 due to the overestimations of SO

show abstract

Urban effects on convective precipitation in Mexico city

Cited by 199 publications

References 12 publications

On extreme daily precipitation totals at Athens, Greece

On extreme daily precipitation totals at Athens, Greece

Review of urban climate research in (sub)tropical regions

Aerosol indirect effect on the grid-scale clouds in the two-way coupled WRF–CMAQ: model description, development, evaluation and regional analysis

Contact Info

Product

Resources

About