Journal ArticleDOI
Flood or drought: How do aerosols affect precipitation?
Daniel Rosenfeld,Ulrike Lohmann,Graciela B. Raga,Colin D. O'Dowd,Markku Kulmala,Sandro Fuzzi,Anni Reissell,Meinrat O. Andreae +7 more
TLDR
A conceptual model is proposed that explains this apparent dichotomy of pristine tropical clouds with low CCN concentrations rain out too quickly to mature into long-lived clouds and heavily polluted clouds evaporate much of their water before precipitation can occur.Abstract:
Aerosols serve as cloud condensation nuclei (CCN) and thus have a substantial effect on cloud properties and the initiation of precipitation. Large concentrations of human-made aerosols have been reported to both decrease and increase rainfall as a result of their radiative and CCN activities. At one extreme, pristine tropical clouds with low CCN concentrations rain out too quickly to mature into long-lived clouds. On the other hand, heavily polluted clouds evaporate much of their water before precipitation can occur, if they can form at all given the reduced surface heating resulting from the aerosol haze layer. We propose a conceptual model that explains this apparent dichotomy.read more
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Cloud resolving simulation of extremely heavy rainfall event over Kerala in August 2018 – Sensitivity to microphysics and aerosol feedback
Biyo Thomas,Biyo Thomas,Yesubabu Viswanadhapalli,C. V. Srinivas,Hari Prasad Dasari,Raju Attada,Sabique Langodan +6 more
TL;DR: In this article, the authors acknowledge ECMWF and Copernicus Climate Change Service for providing the ERA5 reanalysis data and GES DISC, NASA for providing rainfall estimates of TRMM3B42V7.
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ULF geomagnetic activity effects on tropospheric temperature, specific humidity, and cloud cover in Antarctica, during 2003–2010
TL;DR: In this article, the authors investigated the possible relationship between the ULF geomagnetic activity and the variations of several atmospheric parameters, including the tropospheric temperature T, specific humidity Q and cloud cover (HCC, MCC and LCC).
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Regional variability in lightning activity over South Asia
A. K. Kamra,Penki Ramesh Kumar +1 more
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Parameterization of aerosol scavenging due to atmospheric ionization under varying relative humidity
Liang Zhang,Brian A. Tinsley +1 more
TL;DR: In this paper, simulations and parameterizations of the modulation of aerosol scavenging by electric charges on particles and droplets for different relative humidities have been made for 3'µm radii droplets and a wide range of particle radii.
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Vertical characteristics of radar reflectivity and DSD parameters in intense convective clouds over South East South Asia during the Indian Summer monsoon: GPM observations
Shailendra Kumar,Yamina Silva +1 more
TL;DR: The Global Precipitation Measurement System (GPMS) was launched in February 2014 as a legacy of the Tropical Rainfall Measuring Mission (TRMM) as mentioned in this paper.
References
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TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.
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Aerosols, climate, and the hydrological cycle
TL;DR: Human activities are releasing tiny particles (aerosols) into the atmosphere that enhance scattering and absorption of solar radiation, which can lead to a weaker hydrological cycle, which connects directly to availability and quality of fresh water, a major environmental issue of the 21st century.
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Global indirect aerosol effects: a review
Ulrike Lohmann,Johann Feichter +1 more
TL;DR: In this article, the effects of aerosols on the climate system are discussed and different approaches how the climatic implications of these effects can be estimated globally as well as improvements that are needed in global climate models in order to better represent indirect aerosol effects are discussed.
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Climate Effects of Black Carbon Aerosols in China and India
TL;DR: A global climate model used to investigate possible aerosol contributions to trends in China and India found precipitation and temperature changes in the model that were comparable to those observed if the aerosols included a large proportion of absorbing black carbon (“soot”), similar to observed amounts.
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Inaugural Article by a Recently Elected Academy Member
Jian Xu,Jeffrey I. Gordon +1 more