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Author: Randall Raymond Friedl
Publisher:
ISBN:
Category : Aircraft exhaust emissions
Languages : en
Pages : 174
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Book Description
Author: Randall Raymond Friedl
Publisher:
ISBN:
Category : Aircraft exhaust emissions
Languages : en
Pages : 174
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309064252
Category : Technology & Engineering
Languages : en
Pages : 55
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Book Description
Aviation is an integral part of the global transportation network, and the number of flights worldwide is expected to grow rapidly in the coming decades. Yet, the effects that subsonic aircraft emissions may be having upon atmospheric composition and climate are not fully understood. To study such issues, NASA sponsors the Atmospheric Effects of Aviation Program (AEAP). The NRC Panel on Atmospheric Effects of Aviation is charged to evaluate AEAP, and in this report, the panel is focusing on the subsonic assessment (SASS) component of the program. This evaluation of SASS/AEAP was based on the report Atmospheric Effects of Subsonic Aircraft: Interim Assessment Report of the Advanced Sub-sonic Technology Program, on a strategic plan developed by SASS managers, and on other relevant documents.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309076609
Category : Technology & Engineering
Languages : en
Pages : 55
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Book Description
Aviation is an integral part of the global transportation network, and the number of flights worldwide is expected to grow rapidly in the coming decades. Yet, the effects that subsonic aircraft emissions may be having upon atmospheric composition and climate are not fully understood. To study such issues, NASA sponsors the Atmospheric Effects of Aviation Program (AEAP). The NRC Panel on Atmospheric Effects of Aviation is charged to evaluate AEAP, and in this report, the panel is focusing on the subsonic assessment (SASS) component of the program. This evaluation of SASS/AEAP was based on the report Atmospheric Effects of Subsonic Aircraft: Interim Assessment Report of the Advanced Sub-sonic Technology Program, on a strategic plan developed by SASS managers, and on other relevant documents.
Author: Michael J. Prather
Publisher:
ISBN:
Category : Aeronautics, Commercial
Languages : en
Pages : 246
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Book Description
Author: Panel on Atmospheric Effects of Aviation
Publisher: National Academies Press
ISBN: 0309523923
Category : Technology & Engineering
Languages : en
Pages : 68
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Book Description
Scientists and policy-makers alike are concerned that operation of a fleet of high-speed civil transport (HSCT) aircraft could significantly affect the global atmosphere. HSCT emissions may have a direct effect on the chemistry of the atmosphere, leading to changes in the distribution of ozone; they may also have indirect effects on ozone and on global climate through coupling with radiative and dynamical processes in the atmosphere. An assessment of the atmospheric impact of a fleet of HSCTs thus requires not only an understanding of the chemistry of the natural stratosphere and its possible perturbations by HSCT emissions, but also an understanding of the pathways for transport of HSCT emissions within the atmosphere, and the resulting temporal and spatial distribution of HSCT emissions. The results of NASA's Atmospheric Effects of Stratospheric Aircraft (AESA) project were summarized in a 1995 NASA assessment. The present report looks at that summary and at more recent work to evaluate the state of the science. AESA has made good progress in the past few years. Satellite and aircraft observations have elucidated important aspects of large-scale transport processes. Field campaigns have provided a much better picture of the relative importance, below 20 km altitude, of the major catalytic cycles for ozone destruction. Careful intercomparisons of assessment models have led to reduction of some of the differences among the models. However, a number of uncertainties and inconsistencies still remain.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309064155
Category : Science
Languages : en
Pages : 383
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Book Description
Technology has propelled the atmospheric sciences from a fledgling discipline to a global enterprise. Findings in this field shape a broad spectrum of decisionsâ€"what to wear outdoors, whether aircraft should fly, how to deal with the issue of climate change, and more. This book presents a comprehensive assessment of the atmospheric sciences and offers a vision for the future and a range of recommendations for federal authorities, the scientific community, and education administrators. How does atmospheric science contribute to national well-being? In the context of this question, the panel identifies imperatives in scientific observation, recommends directions for modeling and forecasting research, and examines management issues, including the growing problem of weather data availability. Five subdisciplinesâ€"physics, chemistry, dynamics and weather forecasting, upper atmosphere and near-earth space physics, climate and climate changeâ€"and their status as the science enters the twenty-first century are examined in detail, including recommendations for research. This readable book will be of interest to public-sector policy framers and private-sector decisionmakers as well as researchers, educators, and students in the atmospheric sciences.
Author: Richard S. Stolarski
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722953478
Category :
Languages : en
Pages : 168
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Book Description
This first interim assessment of the subsonic assessment (SASS) project attempts to summarize concisely the status of our knowledge concerning the impacts of present and future subsonic aircraft fleets. It also highlights the major areas of scientific uncertainty, through review of existing data bases and model-based sensitivity studies. In view of the need for substantial improvements in both model formulations and experimental databases, this interim assessment cannot provide confident numerical predictions of aviation impacts. However, a number of quantitative estimates are presented, which provide some guidance to policy makers. Friedl, Randall R. (Editor) Goddard Space Flight Center ATMOSPHERIC EFFECTS; SUBSONIC AIRCRAFT; PREDICTIONS; ESTIMATES; DATA BASES; NUMERICAL ANALYSIS; SENSITIVITY; POLICIES...
Author: Anne M. Thompson
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 332
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Book Description
Author: Bernard Etkin
Publisher: Courier Corporation
ISBN: 0486141659
Category : Technology & Engineering
Languages : en
Pages : 594
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Book Description
This treatment for upper-level undergraduates, graduate students, and professionals makes special reference to stability and control of airplanes, with extensive numerical examples covering a variety of vehicles. 260 illustrations. 1972 edition.
