Oxidant Particle And Photochemical Processes In The Atmosphere Above A Southeast Asian Rain Forest
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Oxidant Particle And Photochemical Processes In The Atmosphere Above A Southeast Asian Rain Forest
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Author : Simon Malpass
language : en
Publisher:
Release Date : 2011
Oxidant Particle And Photochemical Processes In The Atmosphere Above A Southeast Asian Rain Forest written by Simon Malpass and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Development And Application Of A Box Model To Boundary Layer Chemistry Above A Tropical Rainforest
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Author : Thomas Alan Miller Pugh
language : en
Publisher:
Release Date : 2010
Development And Application Of A Box Model To Boundary Layer Chemistry Above A Tropical Rainforest written by Thomas Alan Miller Pugh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Biogenic volatile organic compounds (BVOCs), in particular isoprene and monoter penes, dominate the oxidation capacity of the tropical boundary layer and play an important role in the formation of the radiatively and ecologically significant gas ozone. This work investigates the oxidation of isoprene and monoterpenes in the tropical boundary layer using a box model of atmospheric chemistry, which is adapted for this purpose. The model output is compared with measurements of atmospheric composition and fluxes made over the tropical rainforest during the Oxidant Particle and Photochemical Processes (OP3) campaign in Sabah, Malaysia. The model can replicate 03 and NOx concentrations well during the daytime, but at night, the simplified mixing assumptions of the model compromise the representation of deposition of these species. A simple parametrisation for an effective night-time deposition velocity for ozone can correct this poor representation. Conversely, the ability of the model to simulate the daytime oxidation chemistry of isoprene and the concentration of the oxidant OH is severely compromised. Possible reasons for the poor model performance in this regard are discussed and tested. The most satisfactory solution to improve model fit appears to be a reduction in the rate of reaction of lsoprene/rnonoterpenes with OH, based upon the hypothesis of segregation of these species in the boundary layer. However, a novel method of calculating the segregation intensity from isoprene concentration measurements rules out this hypothesis. The reason for the model-measurement discrepancies of isoprene and OH remains unsolved. Following this detailed assessment of the strengths and limitations of the model, it is used as a predictive tool to investigate the effect of a change in BVOC emission on atmospheric chemistry. Conversion of natural rainforest to oil palm plantation substantially increases isoprene emissions, and will lead to dangerously high boundary layer ozone concentrations if future NOx concentrations are allowed to approach those in Western Europe. Meanwhile, landscape-scale circadian control can modify the magnitude and timing of isoprene emission, significantly affecting boundary layer ozone and oxidant concentrations. Further measurement studies to confirm landscape-scale circadian control of isoprene emissions are required.
Ocean Atmosphere Interactions Of Gases And Particles
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Author : Peter S. Liss
language : en
Publisher: Springer
Release Date : 2013-12-18
Ocean Atmosphere Interactions Of Gases And Particles written by Peter S. Liss and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-18 with Science categories.
The oceans and atmosphere interact through various processes, including the transfer of momentum, heat, gases and particles. In this book leading international experts come together to provide a state-of-the-art account of these exchanges and their role in the Earth-system, with particular focus on gases and particles. Chapters in the book cover: i) the ocean-atmosphere exchange of short-lived trace gases; ii) mechanisms and models of interfacial exchange (including transfer velocity parameterisations); iii) ocean-atmosphere exchange of the greenhouse gases carbon dioxide, methane and nitrous oxide; iv) ocean atmosphere exchange of particles and v) current and future data collection and synthesis efforts. The scope of the book extends to the biogeochemical responses to emitted / deposited material and interactions and feedbacks in the wider Earth-system context. This work constitutes a highly detailed synthesis and reference; of interest to higher-level university students (Masters, PhD) and researchers in ocean-atmosphere interactions and related fields (Earth-system science, marine / atmospheric biogeochemistry / climate). Production of this book was supported and funded by the EU COST Action 735 and coordinated by the International SOLAS (Surface Ocean- Lower Atmosphere Study) project office.
Pollution Abstracts
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Author :
language : en
Publisher:
Release Date : 1997
Pollution Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Pollution categories.
Ocean Atmosphere Interactions
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Author : Y. Toba
language : en
Publisher: The Rosen Publishing Group
Release Date : 2003-08-31
Ocean Atmosphere Interactions written by Y. Toba and has been published by The Rosen Publishing Group this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-08-31 with Science categories.
This book presents an up-to-date analysis of ocean-atmosphere interaction. Well known experts examine diverse subjects such as ocean surface waves, air-sea exchange processes, ocean surface mixed layer, water-mass formation, as well as general circulation of the oceans, El Nino and Southern Oscillation (ENSO), and the deep-ocean circulation. Other areas described are basic dynamics, data analysis techniques, numerical modelling, and remote sensing. This book is primarily aimed at graduate and senior undergraduate courses in the area of ocean-atmosphere research.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1985
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Aeronautics categories.
Geochemical Investigations In Earth And Space Sciences
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Author : R.J. Hill
language : en
Publisher: Elsevier
Release Date : 2004-06-16
Geochemical Investigations In Earth And Space Sciences written by R.J. Hill and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-06-16 with Science categories.
This volume is the product of a technical session organized for the 2002 Geological Society of America Annual Meeting in recognition of Isaac Kaplan's many contributions to various fields of geochemistry. As Kaplan enters his sixth decade of scientific investigation, it is fair to say that his work has touched or influenced innumerable scientists either directly or indirectly. Readers of this volume are presented with a collection of 29 papers written by former students, post-doctoral researchers, friends and colleagues from countries all over the world (including Sweden, Japan, Taiwan, New Zealand, Australia, Israel and the United States) from the fields of stable isotope, forensic, environmental and petroleum geochemistry, atmospheric chemistry and cosmochemistry. The stable isotope section includes papers investigating climate change, diagenesis, recent sediment and petroleum geochemistry and cosmochemistry problems. The forensic and environmental geochemistry section includes a variety of papers ranging from trace metals in soils to atmospheric CO2 projections. The petroleum geochemistry section includes both basic research and applied geochemistry papers. The ancient and recent sediments section contains papers ranging from carbon flux in modern sediments to Precambrian microfossils. All of the articles together cover a broad range of geochemical studies and represent the diverse and distinguished career of Isaac Kaplan.
Amazonia And Global Change
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Author : Michael Keller
language : en
Publisher: John Wiley & Sons
Release Date : 2013-05-02
Amazonia And Global Change written by Michael Keller and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-05-02 with Science categories.
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 186. Amazonia and Global Change synthesizes results of the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) for scientists and students of Earth system science and global environmental change. LBA, led by Brazil, asks how Amazonia currently functions in the global climate and biogeochemical systems and how the functioning of Amazonia will respond to the combined pressures of climate and land use change, such as Wet season and dry season aerosol concentrations and their effects on diffuse radiation and photosynthesis Increasing greenhouse gas concentration, deforestation, widespread biomass burning and changes in the Amazonian water cycle Drought effects and simulated drought through rainfall exclusion experiments The net flux of carbon between Amazonia and the atmosphere Floodplains as an important regulator of the basin carbon balance including serving as a major source of methane to the troposphere The impact of the likely increased profitability of cattle ranching. The book will serve a broad community of scientists and policy makers interested in global change and environmental issues with high-quality scientific syntheses accessible to nonspecialists in a wide community of social scientists, ecologists, atmospheric chemists, climatologists, and hydrologists.
Integrated Air Quality Management
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Author : Nguyen Thi Kim Oanh
language : en
Publisher: CRC Press
Release Date : 2012-07-05
Integrated Air Quality Management written by Nguyen Thi Kim Oanh and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-07-05 with Law categories.
The steady growth in the number of vehicles on the road, heavy reliance on coal, use of dirty fuels for residential combustion, and extensive open burning are some of the major factors leading to the progressive deterioration of air quality in developing countries in Asia. And despite efforts to establish and implement air quality measurement syste
Ozone And Other Photochemical Oxidants
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Author :
language : en
Publisher: National Academies
Release Date : 1977-01-01
Ozone And Other Photochemical Oxidants written by and has been published by National Academies this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977-01-01 with Nature categories.