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Aerosol-Cloud Interactions from Urban, Regional, to Global Scales

2015-05-05 Science
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Release : 2015-05-05
Genre : Science
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Book Rating : 752/5 ( reviews)

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Book Synopsis Aerosol-Cloud Interactions from Urban, Regional, to Global Scales by : Yuan Wang

Download or read book Aerosol-Cloud Interactions from Urban, Regional, to Global Scales written by Yuan Wang. This book was released on 2015-05-05. Available in PDF, EPUB and Kindle. Book excerpt: The studies in this dissertation aim at advancing our scientific understandings about physical processes involved in the aerosol-cloud-precipitation interaction and quantitatively assessing the impacts of aerosols on the cloud systems with diverse scales over the globe on the basis of the observational data analysis and various modeling studies. As recognized in the Fifth Assessment Report by the Inter-government Panel on Climate Change, the magnitude of radiative forcing by atmospheric aerosols is highly uncertain, representing the largest uncertainty in projections of future climate by anthropogenic activities. By using a newly implemented cloud microphysical scheme in the cloud-resolving model, the thesis assesses aerosol-cloud interaction for distinct weather systems, ranging from individual cumulus to mesoscale convective systems. This thesis also introduces a novel hierarchical modeling approach that solves a long outstanding mismatch between simulations by regional weather models and global climate models in the climate modeling community. More importantly, the thesis provides key scientific solutions to several challenging questions in climate science, including the global impacts of the Asian pollution. As scientists wrestle with the complexities of climate change in response to varied anthropogenic forcing, perhaps no problem is more challenging than the understanding of the impacts of atmospheric aerosols from air pollution on clouds and the global circulation.

Aerosol-Cloud-Climate Interactions

1993-07-22 Science
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Release : 1993-07-22
Genre : Science
Kind : eBook
Book Rating : 962/5 ( reviews)

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Book Synopsis Aerosol-Cloud-Climate Interactions by : Peter V. Hobbs

Download or read book Aerosol-Cloud-Climate Interactions written by Peter V. Hobbs. This book was released on 1993-07-22. Available in PDF, EPUB and Kindle. Book excerpt: Aerosol and clouds play important roles in determining the earth's climate, in ways that we are only beginning to comprehend. In conjunction with molecular scattering from gases, aerosol and clouds determine in part what fraction of solar radiation reaches the earth's surface, and what fraction of the longwave radiation from the earth escapes to space. This book provides an overview of the latest research on atmospheric aerosol and clouds and their effects on global climate. Subjects reviewed include the direct and indirect effects of aerosol on climate, the radiative properties of clouds and their effects on the Earth's radiation balance, the incorporation of cloud effects in numerical weather prediction models, and stratospheric aerosol and clouds.

Aerosol Interactions Between the Surface and the Atmosphere

2011
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Release : 2011
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Kind : eBook
Book Rating : 884/5 ( reviews)

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Book Synopsis Aerosol Interactions Between the Surface and the Atmosphere by : Rasa Grivicke

Download or read book Aerosol Interactions Between the Surface and the Atmosphere written by Rasa Grivicke. This book was released on 2011. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric aerosols play a major role in regional atmospheric chemistry and air quality, while on a global scale, aerosol processes continue to represent the largest source of uncertainty related to climate change. An important aspect of understanding the role of aerosols in these areas is to document the vertical exchange of aerosols with the surface in both urban and rural landscapes since the vertical exchange represents important sources and sinks of aerosols on regional and global scales. In this dissertation, investigation of aerosol dynamics is described for three separate field studies. First, urban eddy covariance flux measurements were made from a building rooftop in Mexico City using a quadrupole aerosol mass spectrometer (Q-AMS) to determine the fluxes of aerosol species to/from the urban landscape. Second, conditional sampling of fine particles in updrafts and downdrafts was performed above a pine forest in Colorado using a thermal desorption chemical ionization mass spectrometer (TD-CIMS) to investigate the relative strengths of sources and sinks for speciated aerosol in a forest environment. Third, the aerosol and gas phase pollutant patterns, measured in Boise, ID during wintertime inversion conditions, were analyzed with respect to the daily evolution of the planetary boundary layer depth and surface meteorological conditions. This dissertation describes the methods used for each of the three studies and summarizes the analysis of the results.

Clouds and Their Climatic Impact

2023-12-19 Science
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Release : 2023-12-19
Genre : Science
Kind : eBook
Book Rating : 310/5 ( reviews)

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Book Synopsis Clouds and Their Climatic Impact by : Sylvia Sullivan

Download or read book Clouds and Their Climatic Impact written by Sylvia Sullivan. This book was released on 2023-12-19. Available in PDF, EPUB and Kindle. Book excerpt: Clouds and Their Climatic Impacts Clouds are an influential and complex element of Earth’s climate system. They evolve rapidly in time and exist over small spatial scales, but also affect global radiative balance and large-scale circulations. With more powerful models and extensive observations now at our disposal, the climate impact of clouds is receiving ever more research attention. Clouds and Their Climatic Impacts: Radiation, Circulation, and Precipitation presents an overview of our current understanding on various types of clouds and cloud systems and their multifaceted role in the radiative budget, circulation patterns, and rainfall. Volume highlights include: Interactions of aerosol with both liquid and ice clouds Surface and atmospheric cloud radiative feedbacks and effects Arctic, extratropical, and tropical clouds Cloud-circulation coupling at global, meso, and micro scales Precipitation efficiency, phase, and measurements The role of machine learning in understanding clouds and climate The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.

Interaction of Aerosol, Clouds, and Radiation on the Regional Scale

2012
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Release : 2012
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Book Synopsis Interaction of Aerosol, Clouds, and Radiation on the Regional Scale by : Max Jonas Bangert

Download or read book Interaction of Aerosol, Clouds, and Radiation on the Regional Scale written by Max Jonas Bangert. This book was released on 2012. Available in PDF, EPUB and Kindle. Book excerpt:

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