Download Mixed-Phase Clouds Ebook PDF

Mixed-Phase Clouds

Mixed-Phase Clouds
Observations and Modeling

by Constantin Andronache

  • Publisher : Elsevier
  • Release : 2017-09-28
  • Pages : 300
  • ISBN : 012810550X
  • Language : En, Es, Fr & De
GET BOOK

Mixed-Phase Clouds: Observations and Modeling presents advanced research topics on mixed-phase clouds. As the societal impacts of extreme weather and its forecasting grow, there is a continuous need to refine atmospheric observations, techniques and numerical models. Understanding the role of clouds in the atmosphere is increasingly vital for current applications, such as prediction and prevention of aircraft icing, weather modification, and the assessment of the effects of cloud phase partition in climate models. This book provides the essential information needed to address these problems with a focus on current observations, simulations and applications. Provides in-depth knowledge and simulation of mixed-phase clouds over many regions of Earth, explaining their role in weather and climate Features current research examples and case studies, including those on advanced research methods from authors with experience in both academia and the industry Discusses the latest advances in this subject area, providing the reader with access to best practices for remote sensing and numerical modeling

Physical Processes in Clouds and Cloud Modeling

Physical Processes in Clouds and Cloud Modeling
A Book

by Alexander P. Khain,Mark Pinsky

  • Publisher : Cambridge University Press
  • Release : 2018-07-05
  • Pages : 686
  • ISBN : 0521767431
  • Language : En, Es, Fr & De
GET BOOK

Provides a comprehensive analysis of modern theories of cloud microphysical processes and their representation in numerical cloud models.

Arctic mixed-phase clouds : Macro- and microphysical insights with a numerical model

Arctic mixed-phase clouds : Macro- and microphysical insights with a numerical model
A Book

by Loewe, Katharina

  • Publisher : KIT Scientific Publishing
  • Release : 2017-09-15
  • Pages : 174
  • ISBN : 3731506866
  • Language : En, Es, Fr & De
GET BOOK

Arctic Mixed-phase Clouds from the Micro- to the Mesoscale - Insights from High-resolution Modeling

Arctic Mixed-phase Clouds from the Micro- to the Mesoscale - Insights from High-resolution Modeling
A Book

by Gesa K. Eirund

  • Publisher : Unknown Publisher
  • Release : 2019
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Quasi Real-time Analysis of Mixed-phase Clouds Using Interferometric Out-of-focus Imaging: Development of an Algorithm to Assess Liquid and Ice Water Content

Quasi Real-time Analysis of Mixed-phase Clouds Using Interferometric Out-of-focus Imaging: Development of an Algorithm to Assess Liquid and Ice Water Content
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2015
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Abstract: According to changes in aircraft certifications rules, instrumentation has to be developed to alert the flight crews of potential icing conditions. The technique developed needs to measure in real time the amount of ice and liquid water encountered by the plane. Interferometric imaging offers an interesting solution: It is currently used to measure the size of regular droplets, and it can further measure the size of irregular particles from the analysis of their speckle-like out-of-focus images. However, conventional image processing needs to be speeded up to be compatible with the real-time detection of icing conditions. This article presents the development of an optimised algorithm to accelerate image processing. The algorithm proposed is based on the detection of each interferogram with the use of the gradient pair vector method. This method is shown to be 13 times faster than the conventional Hough transform. The algorithm is validated on synthetic images of mixed phase clouds, and finally tested and validated in laboratory conditions. This algorithm should have important applications in the size measurement of droplets and ice particles for aircraft safety, cloud microphysics investigation, and more generally in the real-time analysis of triphasic flows using interferometric particle imaging.

Regional Modeling of Aerosol Processing in Liquid and Mixed-phase Clouds

Regional Modeling of Aerosol Processing in Liquid and Mixed-phase Clouds
A Book

by Sara Pousse-Nottelmann

  • Publisher : Unknown Publisher
  • Release : 2015
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Microphysical Properties of Single and Mixed-phase Arctic Clouds Derived from Ground-based AERI Observations

Microphysical Properties of Single and Mixed-phase Arctic Clouds Derived from Ground-based AERI Observations
A Book

by David D. Turner

  • Publisher : Unknown Publisher
  • Release : 2003
  • Pages : 167
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Microphysical Properties of Single and Mixed-Phase Arctic Clouds Derived from AERI Observations

Microphysical Properties of Single and Mixed-Phase Arctic Clouds Derived from AERI Observations
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2003
  • Pages : 183
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

A novel new approach to retrieve cloud microphysical properties from mixed-phase clouds is presented. This algorithm retrieves cloud optical depth, ice fraction, and the effective size of the water and ice particles from ground-based, high-resolution infrared radiance observations. The theoretical basis is that the absorption coefficient of ice is stronger than that of liquid water from 10-13 mm, whereas liquid water is more absorbing than ice from 16-25 um. However, due to strong absorption in the rotational water vapor absorption band, the 16-25 um spectral region becomes opaque for significant water vapor burdens (id est, for precipitable water vapor amounts over approximately 1 cm). The Arctic is characterized by its dry and cold atmosphere, as well as a preponderance of mixed-phase clouds, and thus this approach is applicable to Arctic clouds. Since this approach uses infrared observations, cloud properties are retrieved at night and during the long polar wintertime period. The analysis of the cloud properties retrieved during a 7 month period during the Surface Heat Budget of the Arctic (SHEBA) experiment demonstrates many interesting features. These results show a dependence of the optical depth on cloud phase, differences in the mode radius of the water droplets in liquid-only and mid-phase clouds, a lack of temperature dependence in the ice fraction for temperatures above 240 K, seasonal trends in the optical depth with the clouds being thinner in winter and becoming more optically thick in the late spring, and a seasonal trend in the effective size of the water droplets in liquid-only and mixed-phase clouds that is most likely related to aerosol concentration.

An Introduction to Clouds

An Introduction to Clouds
From the Microscale to Climate

by Ulrike Lohmann,Felix Lüönd,Fabian Mahrt

  • Publisher : Cambridge University Press
  • Release : 2016-06-23
  • Pages : 399
  • ISBN : 1107018226
  • Language : En, Es, Fr & De
GET BOOK

This book provides a fundamental understanding of clouds, from microphysics to climate, with supplementary problem sets and questions.

Environmental Research Laboratories Publication Abstracts

Environmental Research Laboratories Publication Abstracts
A Book

by Environmental Research Laboratories (U.S.)

  • Publisher : Unknown Publisher
  • Release : 1991
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Mixed-phase Icing Conditions

Mixed-phase Icing Conditions
A Review

by James T. Riley

  • Publisher : Unknown Publisher
  • Release : 1998
  • Pages : 74
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Lidar

Lidar
Range-Resolved Optical Remote Sensing of the Atmosphere

by Claus Weitkamp

  • Publisher : Springer Science & Business
  • Release : 2006-06-03
  • Pages : 456
  • ISBN : 0387251014
  • Language : En, Es, Fr & De
GET BOOK

Written by leading experts in optical radar, or lidar, this book brings all the recent practices up-to-date. With a Foreword by one of the founding fathers in the area. Its broad cross-disciplinary scope should appeal to scientists ranging from the view of optical sciences to environmental engineers. Optical remote sensing has matured to become a lead method for cross-disciplinary research. This new multi-authored book reviews the state-of-the-art in a readable monograph.

Thermodynamics, Kinetics and Microphysics of Clouds

Thermodynamics, Kinetics and Microphysics of Clouds
A Book

by Vitaly I. Khvorostyanov,Judith A. Curry

  • Publisher : Cambridge University Press
  • Release : 2014-08-25
  • Pages : 800
  • ISBN : 1107016037
  • Language : En, Es, Fr & De
GET BOOK

This book advances understanding of cloud microphysics and provides a unified theoretical foundation for modeling cloud processes, for researchers and advanced students.

Arctic Research of the United States

Arctic Research of the United States
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2006
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Clouds in the Perturbed Climate System

Clouds in the Perturbed Climate System
Their Relationship to Energy Balance, Atmospheric Dynamics, and Precipitation

by Jost Heintzenberg,Robert J. Charlson

  • Publisher : Mit Press
  • Release : 2009
  • Pages : 597
  • ISBN : 9780262012874
  • Language : En, Es, Fr & De
GET BOOK

Experts consider the many roles that clouds play in the the changing climate--one of the least understood and most puzzling aspects of atmospheric science. More than half the globe is covered by visible clouds. Clouds control major parts of the Earth's energy balance, influencing both incoming shortwave solar radiation and outgoing longwave thermal radiation. Latent heating and cooling related to cloud processes modify atmospheric circulation, and, by modulating sea surface temperatures, clouds affect the oceanic circulation. Clouds are also an essential component of the global water cycle, on which all terrestrial life depends. Yet clouds constitute the most poorly quantified, least understood, and most puzzling aspect of atmospheric science, and thus the largest source of uncertainty in the prediction of climate change. Because clouds are influenced by climate change, and because complex, unidentified feedback systems are involved, science is faced with many unanswered questions. This volume begins by indentifying and describing the baffling nature of clouds. It explores the boundaries of current knowledge on the spatial/temporal variability of clouds and cloud-related aerosols as well as the factors that control clouds, and examines the extent and nature of anthropogenic perturbations. Particular emphasis is given to the connections of clouds to climate through radiation, dynamics, precipitation, and chemistry, and to the difficulties in understanding the obvious but elusive fact that clouds must be affected by climate change. Utilizing the insights of this unique gathering of experts, the book offers recommendations to improve the current state of knowledge and direct future research in fields ranging from chemistry and theoretical physics to climate modeling and remote satellite sensing.

Testing Cloud Microphysics Parameterizations and Improving the Representation of the Wegner-Bergeron-Findeisen Process in Mixed-phase Clouds in NCAR CAM5

Testing Cloud Microphysics Parameterizations and Improving the Representation of the Wegner-Bergeron-Findeisen Process in Mixed-phase Clouds in NCAR CAM5
A Book

by Meng Zhang

  • Publisher : Unknown Publisher
  • Release : 2017
  • Pages : 52
  • ISBN : 9780355325027
  • Language : En, Es, Fr & De
GET BOOK

Mixed-phase clouds are persistently observed in the Arctic and the phase partition of cloud liquid and ice in mixed-phase clouds has important impacts on the surface energy budget and Arctic climate. In this study, we test the NCAR Community Atmosphere Model Version 5 (CAM5) in the single-column and weather forecast modes and evaluate the model performance against observation data obtained during the DOE Atmospheric Radiation Measurement (ARM) Program’s M-PACE field campaign in October 2004 and long-term ground-based multi-sensor measurements. We find that CAM5, like other global climate models, poorly simulates the phase partition in mixed-phase clouds by significantly underestimating the cloud liquid water content. An assumption of the pocket structure in the distribution of cloud liquid and ice based on in situ observations inside mixed-phase clouds has provided a possible solution to improve the model performance by reducing the Wegner-Bergeron-Findeisen (WBF) process rate. In this study, the modification of the WBF process in the CAM5 model has been achieved with applying a stochastic perturbation to the time scale of the WBF process relevant to both ice and snow to account for the heterogeneous mixture of cloud liquid and ice. Our results show that the modification of the WBF process improves the modeled phase partition in mixed-phase clouds. The seasonality of mixed-phase cloud properties is also better captured in the model compared with long-term ground-based remote sensing observations. Furthermore, the phase partitioning is insensitive to the reassignment time step of perturbations.

Aerosol Pollution Impact on Precipitation

Aerosol Pollution Impact on Precipitation
A Scientific Review

by Zev Levin,William R. Cotton

  • Publisher : Springer Science & Business Media
  • Release : 2008-09-30
  • Pages : 386
  • ISBN : 9781402086908
  • Language : En, Es, Fr & De
GET BOOK

Life on Earth is critically dependent upon the continuous cycling of water between oceans, continents and the atmosphere. Precipitation (including rain, snow, and hail) is the primary mechanism for transporting water from the atmosphere back to the Earth’s surface. It is also the key physical process that links aspects of climate, weather, and the global hydrological cycle. Changes in precipitation regimes and the frequency of extreme weather events, such as floods, droughts, severe ice/snow storms, monsoon fluctuations and hurricanes are of great potential importance to life on the planet. One of the factors that could contribute to precipitation modification is aerosol pollution from various sources such as urban air pollution and biomass burning. Natural and anthropogenic changes in atmospheric aerosols might have important implications for precipitation by influencing the hydrological cycle, which in turn could feed back to climate changes. From an Earth Science perspective, a key question is how changes expected in climate will translate into changes in the hydrological cycle, and what trends may be expected in the future. We require a much better understanding and hence predictive capability of the moisture and energy storages and exchanges among the Earth’s atmosphere, oceans, continents and biological systems. This book is a review of our knowledge of the relationship between aerosols and precipitation reaching the Earth's surface and it includes a list of recommendations that could help to advance our knowledge in this area.

CMOS Congress

CMOS Congress
A Book

by Canadian Meteorological and Oceanographic Society

  • Publisher : Unknown Publisher
  • Release : 2021
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Conference on Radar Meteorology of the American Meteorological Society

Conference on Radar Meteorology of the American Meteorological Society
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2003
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK

Izvestiya

Izvestiya
Atmospheric and oceanic physics

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2007
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
GET BOOK