The Influence of Aerosols and Meteorological Conditions on the Total Rain Volume of the Mesoscale Convective Systems Over Tropical Continents
Abstract This study provides an observational assessment of the variations of the total rain volume (TRV) with aerosols through the entire lifetime of mesoscale convective systems (MCSs) over tropics. Using 70,000 MCSs' samples, we show that TRV increases with aerosols from clean to moderately...
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| Format: | Article |
| Language: | English |
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Wiley
2018-12-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2018GL080371 |
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| author | Sudip Chakraborty Rong Fu Daniel Rosenfeld Steven T. Massie |
| author_facet | Sudip Chakraborty Rong Fu Daniel Rosenfeld Steven T. Massie |
| author_sort | Sudip Chakraborty |
| collection | DOAJ |
| description | Abstract This study provides an observational assessment of the variations of the total rain volume (TRV) with aerosols through the entire lifetime of mesoscale convective systems (MCSs) over tropics. Using 70,000 MCSs' samples, we show that TRV increases with aerosols from clean to moderately heavy polluted conditions (aerosol optical depth [AOD] ~ 0.0–0.4). TRV decreases when AOD exceeds 0.5. The TRV change with AOD is strongest under favorable meteorological conditions, such as high total precipitable water (45–75 kg/m2), high convective available potential energy (1,200–2,400 J/kg), and intermediate vertical wind shear (9–21 × 10−4/s). TRV of MCSs increases from 2 to 4 km3 (rain depth ~ 20–40 mm) when AOD < 0.15 or >0.5, to more than 12 km3 (~120 mm) when 0.2 < AOD < 0.4 under above the mentioned optimal meteorological conditions. The basic response of TRV to aerosol concentrations is similar under all the meteorological conditions and during all stages of the MCS lifecycle. |
| format | Article |
| id | doaj-art-ac44cfa43d074e20afdee7f971b282bb |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2018-12-01 |
| publisher | Wiley |
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| series | Geophysical Research Letters |
| spelling | doaj-art-ac44cfa43d074e20afdee7f971b282bb2025-08-20T02:31:37ZengWileyGeophysical Research Letters0094-82761944-80072018-12-01452313,09913,10610.1029/2018GL080371The Influence of Aerosols and Meteorological Conditions on the Total Rain Volume of the Mesoscale Convective Systems Over Tropical ContinentsSudip Chakraborty0Rong Fu1Daniel Rosenfeld2Steven T. Massie3Department of Atmospheric and Oceanic Sciences University of California Los Angeles CA USADepartment of Atmospheric and Oceanic Sciences University of California Los Angeles CA USAInstitute of Earth Sciences Hebrew University of Jerusalem Jerusalem IsraelLaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USAAbstract This study provides an observational assessment of the variations of the total rain volume (TRV) with aerosols through the entire lifetime of mesoscale convective systems (MCSs) over tropics. Using 70,000 MCSs' samples, we show that TRV increases with aerosols from clean to moderately heavy polluted conditions (aerosol optical depth [AOD] ~ 0.0–0.4). TRV decreases when AOD exceeds 0.5. The TRV change with AOD is strongest under favorable meteorological conditions, such as high total precipitable water (45–75 kg/m2), high convective available potential energy (1,200–2,400 J/kg), and intermediate vertical wind shear (9–21 × 10−4/s). TRV of MCSs increases from 2 to 4 km3 (rain depth ~ 20–40 mm) when AOD < 0.15 or >0.5, to more than 12 km3 (~120 mm) when 0.2 < AOD < 0.4 under above the mentioned optimal meteorological conditions. The basic response of TRV to aerosol concentrations is similar under all the meteorological conditions and during all stages of the MCS lifecycle.https://doi.org/10.1029/2018GL080371total rain volume of the mesoscale systems increases as AOD increases up to 0.4as AOD increases beyond 0.5, TRV decreasesthe TRV change with AOD is strongest under favorable meteorological conditionssuch responses are similar under all meteorological conditions and the convective lifecycle |
| spellingShingle | Sudip Chakraborty Rong Fu Daniel Rosenfeld Steven T. Massie The Influence of Aerosols and Meteorological Conditions on the Total Rain Volume of the Mesoscale Convective Systems Over Tropical Continents Geophysical Research Letters total rain volume of the mesoscale systems increases as AOD increases up to 0.4 as AOD increases beyond 0.5, TRV decreases the TRV change with AOD is strongest under favorable meteorological conditions such responses are similar under all meteorological conditions and the convective lifecycle |
| title | The Influence of Aerosols and Meteorological Conditions on the Total Rain Volume of the Mesoscale Convective Systems Over Tropical Continents |
| title_full | The Influence of Aerosols and Meteorological Conditions on the Total Rain Volume of the Mesoscale Convective Systems Over Tropical Continents |
| title_fullStr | The Influence of Aerosols and Meteorological Conditions on the Total Rain Volume of the Mesoscale Convective Systems Over Tropical Continents |
| title_full_unstemmed | The Influence of Aerosols and Meteorological Conditions on the Total Rain Volume of the Mesoscale Convective Systems Over Tropical Continents |
| title_short | The Influence of Aerosols and Meteorological Conditions on the Total Rain Volume of the Mesoscale Convective Systems Over Tropical Continents |
| title_sort | influence of aerosols and meteorological conditions on the total rain volume of the mesoscale convective systems over tropical continents |
| topic | total rain volume of the mesoscale systems increases as AOD increases up to 0.4 as AOD increases beyond 0.5, TRV decreases the TRV change with AOD is strongest under favorable meteorological conditions such responses are similar under all meteorological conditions and the convective lifecycle |
| url | https://doi.org/10.1029/2018GL080371 |
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