Increased winter precipitation over the North Pacific from 1984–1994 to 1995–2005 inferred from the Global Precipitation Climatology Project

Li, Guohui; Wang, Yuan; Lee, Keun-Hee; Diao, Yiwei; Zhang, Renyi

doi:10.1029/2008gl034668

Cited by 35 publications

(32 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mass and number concentration of ammonium sulfate over the sea are assumed to be half of the values over the continent. To mimic urban aerosol pollution, a production rate of ammonium sulfate is assumed to be 0.5 µg kg −1 h −1 over the PRD metropolitan area (Fan et al, 2005;Zhang et al, 2008b). The background sea salt is initiated with a maximum number concentration of about 110 cm −3 and a mass mixing ratio of 0.36 µg kg −1 in both Pand C-cases.…”

Section: Design Of Numerical Simulationsmentioning

confidence: 99%

“…Atmospheric aerosols, formed from natural and anthropogenic sources (Zhang et al, 2004a;IPCC, 2007;Zhang, 2010), have been closely linked with modification of cloud systems of diverse scales, ranging from isolated convective storms (van den Heever and Cotton, 2006;Fan et al, 2007aFan et al, , b, 2008Li et al, 2008a), mesoscale convective systems such as squall lines Tao et al, 2007) and hurricanes , to large scale circulations such as wintertime Pacific storm track Li et al, 2008b) and summertime Asian monsoon (Lau et al, 2006). The impacts of aerosols on cloud systems include direct alteration of the solar radiation budget and indirect modification of the cloud dynamics and microphysical properties (Ramanathan et al, 2001;Tie et al, 2003;Khain et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Long-term impacts of aerosols on precipitation and lightning over the Pearl River Delta megacity area in China

et al. 2011

View full text Add to dashboard Cite

Abstract. Seven-year measurements of precipitation, lightning flashes, and visibility from 2000 to 2006 have been analyzed in the Pearl River Delta (PRD) region, China, with a focus on the Guangzhou megacity area. Statistical analysis shows that the occurrence of heavy rainfall (>25 mm per day) and frequency of lightning strikes are reversely correlated to visibility during this period. To elucidate the effects of aerosols on cloud processes, precipitation, and lightning activity, a cloud resolving -Weather Research and Forecasting (CR-WRF) model with a two-moment bulk microphysical scheme is employed to simulate a mesoscale convective system occurring on 28 Match 2009 in the Guangzhou megacity area. The model predicted evolutions of composite radar reflectivity and accumulated precipitation are in agreement with measurements from S-band weather radars and automatic gauge stations. The calculated lightning potential index (LPI) exhibits temporal and spatial consistence with lightning flashes recorded by a local lightning detection network. Sensitivity experiments have been performed to reflect aerosol conditions representative of polluted and clean cases. The simulations suggest that precipitation and LPI are enhanced by about 16 % and 50 %, respectively, under the polluted aerosol condition. Our results suggest that elevated aerosol loading suppresses light and moderate precipitation (less than 25 mm per day), but enhances heavy precipitation. The responses of hydrometeors and latent heat release to different aerosol loadings reveal the physical mechanism for the precipitation and lightning enhancement in the Guangzhou megacity area, showing more efficient mixed phase processes and intensified convection under the polluted aerosol condition.

show abstract

Section: Design Of Numerical Simulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Long-term impacts of aerosols on precipitation and lightning over the Pearl River Delta megacity area in China

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Studies of aerosol impacts on large-scale circulation have brought further attention to interactions between aerosols and clouds. For example, Li et al (2008) shows that the recent positive trend in wintertime precipitation over the North Pacific is related to increased aerosol emissions. Zhang et al (2007) and Wang et al (2014) suggest that increased anthropogenic aerosol emissions in Asia can strengthen cyclones along the Pacific storm track.…”

Section: Introductionmentioning

confidence: 99%

Climatology of the aerosol optical depth by components from the Multi-angle Imaging SpectroRadiometer (MISR) and chemistry transport models

et al. 2016

View full text Add to dashboard Cite

Abstract. The Multi-angle Imaging SpectroRadiometer (MISR) Joint Aerosol (JOINT_AS) Level 3 product has provided a global, descriptive summary of MISR Level 2 aerosol optical depth (AOD) and aerosol type information for each month over 16+ years since March 2000. Using Version 1 of JOINT_AS, which is based on the operational (Version 22) MISR Level 2 aerosol product, this study analyzes, for the first time, characteristics of observed and simulated distributions of AOD for three broad classes of aerosols: spherical nonabsorbing, spherical absorbing, and nonspherical -near or downwind of their major source regions. The statistical moments (means, standard deviations, and skewnesses) and distributions of AOD by components derived from the JOINT_AS are compared with results from two chemistry transport models (CTMs), the Goddard Chemistry Aerosol Radiation and Transport (GOCART) and SPectral RadIatioN-TrAnSport (SPRINTARS). Overall, the AOD distributions retrieved from MISR and modeled by GOCART and SPRINTARS agree with each other in a qualitative sense. Marginal distributions of AOD for each aerosol type in both MISR and models show considerable high positive skewness, which indicates the importance of including extreme AOD events when comparing satellite retrievals with models. The MISR JOINT_AS product will greatly facilitate comparisons between satellite observations and model simulations of aerosols by type.

show abstract

“…Additional comparisons are made between the present two-moment microphysical scheme and available single-moment microphysical bulk schemes in the WRF model. In separate publications, we discuss the applications of the CR-WRF model for a continental squall line and large-scale cyclone over the Pacific Li et al, 2008].…”

Section: Introductionmentioning

confidence: 99%

Implementation of a two‐moment bulk microphysics scheme to the WRF model to investigate aerosol‐cloud interaction

Li¹,

Wang²,

Zhang³

2008

J. Geophys. Res.

Self Cite

176

184

View full text Add to dashboard Cite

[1] A two-moment bulk microphysical scheme has been implemented into the Weather Research and Forecasting (WRF) model to investigate the aerosol-cloud interaction. The microphysical scheme calculates the mass mixing ratios and number concentrations of aerosols and five types of hydrometeors and accounts for various cloud processes including warm and mixed phase microphysics. The representation of the aerosol size distribution is evaluated, showing that the three-moment modal method produces results better in agreement with the sectional approach than the two-moment modal method for variable supersaturation conditions in clouds. The effects of aerosols on cloud processes are investigated using the two-moment bulk microphysical scheme in a convective cumulus cloud event occurring on 24 August 2000 in Houston, Texas. The modeled evolution of the distribution of radar reflectivity in the y-z section, the cell lifetime, and averaged accumulated precipitation with the aerosol concentration under the polluted urban condition are qualitatively consistent with the measurements. Sensitivity simulations are initialized using a set of aerosol profiles with the number concentrations ranging from 200 to 50,000 cm À3 and mass ranging from 1 to 10 mg m À3 at the surface level. The response of precipitation to the increase of aerosol concentrations is nonmonotonic, because of the complicated interaction between cloud microphysics and dynamics. The precipitation increases with aerosol concentrations from clean maritime to continental background conditions, but is considerably reduced and completely suppressed under highly polluted conditions, indicating that the aerosol concentration exhibits distinct effects on the precipitation efficiency under different aerosol conditions. The maximal cloud cover, core updraft, and maximal vertical velocity exhibit similar responses as precipitation. Comparison is made to evaluate the effects of different autoconversion parameterizations and bulk microphysical schemes on cloud properties. Because of its broad application in numerical weather prediction, implementation of the two-moment microphysical scheme to the WRF model will greatly facilitate assessment of aerosol-cloud interaction from individual cumulus to mesoscale convective systems.Citation: Li, G., Y. Wang, and R. , Implementation of a two-moment bulk microphysics scheme to the WRF model to investigate aerosol-cloud interaction,

show abstract

Increased winter precipitation over the North Pacific from 1984–1994 to 1995–2005 inferred from the Global Precipitation Climatology Project

Cited by 35 publications

References 24 publications

Long-term impacts of aerosols on precipitation and lightning over the Pearl River Delta megacity area in China

Long-term impacts of aerosols on precipitation and lightning over the Pearl River Delta megacity area in China

Climatology of the aerosol optical depth by components from the Multi-angle Imaging SpectroRadiometer (MISR) and chemistry transport models

Implementation of a two‐moment bulk microphysics scheme to the WRF model to investigate aerosol‐cloud interaction

Contact Info

Product

Resources

About