Simulation of a severe convective storm using a numerical model with explicitly incorporated aerosols

Lompar, Miloš; Ćurić, Mladjen; Romanić, Djordje

doi:10.1016/j.atmosres.2017.04.037

Cited by 29 publications

(24 citation statements)

References 57 publications

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“…These variabilities are represented in the Thompson and Eidhammer microphysics [16] using the global model simulations by Colarco et al (2010) [36] in which the aerosol particles are explicitly modelled with several size bins using the Goddard Chemistry Aerosol Radiation and Transport (GOCART) model [37]. Similar to the work carried out by Lompar and his collaborators [25], the natural aerosols in this study were modelled using their climatological means for the given month. The chemical properties of natural aerosols, such as their activation in wet environment, were calculated based on the kappa (κ) hygroscopicity approach using a parcel model ( [38,39]).…”

Section: Description Of Test Casesmentioning

confidence: 99%

“…The heights of 500-hPa level was similar to the UAE event (~570 geopotential decameters). Also, in contrast to the UAE and western Serbia model forecasts, which were compared against filed measurements in [25,31], respectively, this WRF simulation was not evaluated against any in-situ or remote measurements. Therefore, the value of this study lies in the relative rather than absolute numbers of simulated surface precipitation between three different seeding cases.…”

Section: Model and Experiments Setupmentioning

confidence: 99%

“…Recently, Lompar and his colleagues [25] discussed how cloud properties and their microphysics highly depend on geographical region around the world and thereby emphasized the importance of case studies that cover different climates. Along the same lines, it is logical to expect that the success rate of cloud seeding experiments/projects is highly dependent on the geographical region where the seeding activity takes place.…”

Section: Introductionmentioning

confidence: 99%

“…These two cases are then compared against each other as well as against the control case when seeding was not conducted. While numerous studies focused on verifying WRF forecasts in terms of accumulated surface precipitation and cloud cover by investigating different physical packages and/or geographical regions around the world (e.g., [16,25,31,32]), this article is the first study that introduces the CSNT aerosol into the WRF model and tests its performances under real weather conditions. The CSNT substance has not yet been tested in real atmosphere and therefore a comparison against seeding field projects is not possible at this point.…”

Section: Introductionmentioning

confidence: 99%

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Three-Dimensional Modelling of Precipitation Enhancement by Cloud Seeding in Three Different Climate Zones

Ćurić

Lompar²,

Romanić

et al. 2019

Atmosphere

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This study numerically investigates precipitation enhancement from cumuliform clouds in three different climate regions: (1) Arid climate of the United Arab Emirates (UAE); (2) maritime climate of Thailand; and (3) continental climate of Serbia. Recently developed core/shell sodium chloride (NaCl)/titanium dioxide (TiO2) nanostructure (CSNT) aerosol was tested as a precipitation enhancer in all three climate regions. Previous experimental studies in cloud chambers and idealized numerical simulations demonstrated that CSNT is a significantly more effective precipitation enhancer than the traditional NaCl. Here, CSNT and NaCl seeding agents are incorporated into the WRF (Weather Research and Forecasting) model microphysics with explicate treatment of aerosol. Our results show that CSNT is a profoundly more effective precipitation enhancer in the case of arid climate characterized with low humidity. The accumulated surface precipitation in the arid test was 1.4 times larger if CSNT seeding agent was used instead of NaCl. The smallest difference in the effectiveness between CSNT and NaCl was observed in the maritime case due to their similar activation properties at high values of relative humidity.

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Section: Description Of Test Casesmentioning

confidence: 99%

Section: Model and Experiments Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Three-Dimensional Modelling of Precipitation Enhancement by Cloud Seeding in Three Different Climate Zones

Ćurić

Lompar²,

Romanić

et al. 2019

Atmosphere

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“…Stratman and Brewster (2017) showed that, while the forecast of tornadic supercells can be sensitive to the microphysics scheme, single-moment schemes perform reasonably well compared to multi-moment schemes. In addition, effects of aerosols on the radiation and on the cloud microphysics are considered (Rotstayn and Lohmann, 2002;Rotstayn et al, 2011), which are shown to be important for the simulations of severe convective storms (Lompar et al, 2017). In order to account for processes within the urban canopy layer, CCAM employs a state-of-the-art urban parameterization based on the Town Energy Budget (TEB; Masson, 2000), approach denoted here as aTEB (Thatcher and Hurley, 2012;Luhar et al, 2014;Lipson et al, 2017), which is coupled to the Community Atmosphere Biosphere Land Exchange model (CABLE) land-surface scheme (Kowalczyk et al, 2013).…”

Section: Forecast Modelmentioning

confidence: 99%

The Hamburg Tornado (7 June 2016) from the perspective of low-cost high-resolution radar data and weather forecast model

Hoffmann

Merker

Lengfeld

et al. 2018

Atmospheric Research

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A B S T R A C TA tornado hit the northeastern suburbs of Hamburg, Germany, on 7 June 2016. It had an estimated strength of upper end F1 on the Fujita scale and was short-lived with an approximate duration of only 13 min and a path length of just about 1.3 km. We demonstrate that such a small-scale, extreme event can be observed and forecasted accurately by a low-cost radar and by an atmospheric model with low computational costs, respectively.Observations from a low-cost single polarized X-band radar covering the urban area of Hamburg with 60 m spatial and 30 s temporal resolution are analyzed with respect to their ability to capture the development as well as the track of the tornado. In contrast to the national C-band radar network, the X-band radar is capable of capturing the hook echo of the tornado as well as the circular pattern in rain rates, because of its higher resolution in space and time.High-resolution forecasts of the tornado event are conducted with the computational efficient Conformal Cubic Atmosphere Model (CCAM) in order to test the capability of predicting the tornado with a lead time of a few hours. A three step downscaling method is used to obtain a spatial resolution of 1 km with initial conditions taken from the NCEP analysis. Calculated severe weather indices clearly indicate a potential for a tornado. CCAM cannot explicitly resolve small scale tornadic features but the model simulates a strong convective cell only a few kilometers apart from the tornadic thunderstorm observed by the radar.

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Evaluation of convective storms using spaceborne radars over the Indo‐Gangetic Plains and western coast of India

Mangla

Indu

Lakshmi

2020

Meteorological Applications

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Monsoonal convective systems are examined using four years (2014)(2015)(2016)(2017) of radar reflectivity data from the Precipitation Features (PFs) database of the Global Precipitation Measurement (GPM) Microwave Imager (GMI) and Dual Precipitation Radar (DPR). The study classifies the cumulonimbus tower (PF-CbT) at 12 km, and intense convective clouds at both 3 km (PF-ICC3) and 8 km (PF-ICC8) based on PFs' reflectivity threshold at a reference height over the Indo-Gangetic Plains (IGP) and Indian Western coastal (WG) region, including the Arabian Sea and the Western Ghats. Results show that the regional variations are more enhanced for the PF-ICC3 clouds with high occurrence over the IGP region. In the mixed-phase regime, the median maximum reflectivity is greater for all cloud types over the IGP region. The occurrences of 20 and 40 dBZ echo the top height > 5 km is higher in the IGP region, indicating the deep and intense convection. The aerosol-cloud interaction is examined for warm and mixed-phase clouds. The vertical structure of aerosols shows the suppression of warm rainfall over the IGP region. However, rainfall intensity increases in mixed-phase clouds because of the dominancy of ice processes. The significant positive (negative) correlation is observed between the echo top height and aerosol concentrations over the IGP (WG) region. The value of the novel findings clearly states the region-specific demand for a closer examination of the radar reflectivity-aerosol interaction on regime-dependent clouds over the IGP region as well as contrasts against other regions for similar and contrasting cloud-aerosol-radiation interactions.

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Simulation of a severe convective storm using a numerical model with explicitly incorporated aerosols

Cited by 29 publications

References 57 publications

Three-Dimensional Modelling of Precipitation Enhancement by Cloud Seeding in Three Different Climate Zones

Three-Dimensional Modelling of Precipitation Enhancement by Cloud Seeding in Three Different Climate Zones

The Hamburg Tornado (7 June 2016) from the perspective of low-cost high-resolution radar data and weather forecast model

Evaluation of convective storms using spaceborne radars over the Indo‐Gangetic Plains and western coast of India

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