Download or read book Effects of Meteorological Conditions on Ozone Sensitivity in the San Joaquin Valley written by Nancy Brown and published by . This book was released on 2011 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Meteorological Conditions Surrounding High Ozone Events in California s Central Valley written by Samantha Danielle Caputi and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The San Joaquin Valley has a notorious ozone violation problem that has persisted despite other areas in California trending toward cleaner air at a faster rate in recent decades. Here we synthesize the various synoptic, mesoscale, and microscale meteorological factors that contribute to this problem. In particular, data from the California Baseline Ozone Transport Study (CABOTS) field campaign in the summer of 2016 are analyzed, which include 170 hours of aircraft data, and these aircraft deployments are looked at in the context of background synoptic-scale meteorological conditions. We lastly highlight the importance of measuring synoptic-scale subsidence in mountain-valley systems such as the San Joaquin Valley where air pollution is an issue, assess our current ability to accomplish this, and propose new methods for future research in this domain. Some key findings from these analyses include: 1) Nighttime mesoscale features in the Southern San Joaquin Valley, mainly the low level jet and Fresno Eddy, can either recirculate or deplete ozone from the previous day, and which of these two processes dominate on any given night is determined by the low level jet strength; 2) It is extremely important to track the chemical fate of the Nitrate radical at night as this can have a large effect on the ozone budget; 3) A 3-layer model of the atmosphere is proposed, where a buffer layer exists between the daytime boundary layer and free troposphere above, and the entrainment processes at the top of the boundary layer are important to track as pollutants from the previous day can be injected into the buffer layer by the mountain-valley circulation; 4) A low-cost method of estimating turbulence (specifically the convective velocity scale, turbulent kinetic energy, and eddy dissipation) from aircraft data without a gust probe is developed; 5) The newly developed Micro-Doppler lidar that was used during CABOTS shows promising first results in its ability to measure fair-weather vertical velocities in the lower atmosphere.

Download or read book Demonstration of Ozone Impacts on Crop Species in the San Joaquin Valley written by David A. Grantz and published by . This book was released on 2003 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Changes in Ozone Sensitivity to Precursor Emissions on Diurnal Weekly and Decadal Time Scales written by Linsey Chen Marr and published by . This book was released on 2002 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impacts of Changes in Precursor Emissions from the San Francisco Bay Area on Ozone in the North Central Coast and San Joaquin Valley Air Basins written by and published by . This book was released on 1991 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book I Anledning af Esbjerg og Ribe Typografernes Bes g i T nder den 20 August 1922 written by and published by . This book was released on 1922 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of the Impacts of Transported Pollutants on Ozone Concentrations in California written by Cynthia Garcia and published by . This book was released on 2001 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sensitivity Analysis of Ozone Formation and Transport for a Central California Air Pollution Episode written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CMAQ-HDDM is used to determine spatial and temporal variations in ozone limiting reagents and local vs upwind source contributions for an air pollution episode in Central California. We developed a first- and second- order sensitivity analysis approach with the Decoupled Direct Method to examine spatial and temporal variations of ozone-limiting reagents and the importance of local vs upwind emission sources in the San Joaquin Valley of central California for a five-day ozone episode (29th July-3rd Aug, 2000). Despite considerable spatial variations, nitrogen oxides (NO(subscript x)) emission reductions are overall more effective than volatile organic compound (VOC) control for attaining the 8-hr ozone standard in this region for this episode, in contrast to the VOC control that works better for attaining the prior 1-hr ozone standard. Inter-basin source contributions of NO(subscript x) emissions are limited to the northern part of the SJV, while anthropogenic VOC (AVOC) emissions, especially those emitted at night, influence ozone formation in the SJV further downwind. Among model input parameters studied here, uncertainties in emissions of NO(subscript x) and AVOC, and the rate coefficient of the OH + NO2 termination reaction, have the greatest effect on first-order ozone responses to changes in NO(subscript x) emissions. Uncertainties in biogenic VOC emissions only have a modest effect because they are generally not collocated with anthropogenic sources in this region.

Download or read book Rethinking the Ozone Problem in Urban and Regional Air Pollution written by National Research Council and published by National Academies Press. This book was released on 1992-02-01 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite more than 20 years of regulatory efforts, concern is widespread that ozone pollution in the lower atmosphere, or troposphere, threatens the health of humans, animals, and vegetation. This book discusses how scientific information can be used to develop more effective regulations to control ozone. Rethinking the Ozone Problem in Urban and Regional Air Pollution discusses: The latest data and analysis on how tropospheric ozone is formed. How well our measurement techniques are functioning. Deficiencies in efforts to date to control the problem. Approaches to reducing ozone precursor emissions that hold the most promise. What additional research is needed. With a wealth of technical information, the book discusses atmospheric chemistry, the role of oxides of nitrogen (NOx) and volatile organic compounds (VOCs) in ozone formation, monitoring and modeling the formation and transport processes, and the potential contribution of alternative fuels to solving the tropospheric ozone problem. The committee discusses criteria for designing more effective ozone control efforts. Because of its direct bearing on decisions to be made under the Clean Air Act, this book should be of great interest to environmental advocates, industry, and the regulatory community as well as scientists, faculty, and students.

Download or read book Global Climate Change Impacts in the United States written by U.S. Global Change Research Program and published by Cambridge University Press. This book was released on 2009-08-24 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summarizes the science of climate change and impacts on the United States, for the public and policymakers.

Download or read book Mountain Weather Research and Forecasting written by Fotini K. Chow and published by Springer Science & Business Media. This book was released on 2012-08-30 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with a broad understanding of the fundamental principles driving atmospheric flow over complex terrain and provides historical context for recent developments and future direction for researchers and forecasters. The topics in this book are expanded from those presented at the Mountain Weather Workshop, which took place in Whistler, British Columbia, Canada, August 5-8, 2008. The inspiration for the workshop came from the American Meteorological Society (AMS) Mountain Meteorology Committee and was designed to bridge the gap between the research and forecasting communities by providing a forum for extended discussion and joint education. For academic researchers, this book provides some insight into issues important to the forecasting community. For the forecasting community, this book provides training on fundamentals of atmospheric processes over mountainous regions, which are notoriously difficult to predict. The book also helps to provide a better understanding of current research and forecast challenges, including the latest contributions and advancements to the field. The book begins with an overview of mountain weather and forecasting chal- lenges specific to complex terrain, followed by chapters that focus on diurnal mountain/valley flows that develop under calm conditions and dynamically-driven winds under strong forcing. The focus then shifts to other phenomena specific to mountain regions: Alpine foehn, boundary layer and air quality issues, orographic precipitation processes, and microphysics parameterizations. Having covered the major physical processes, the book shifts to observation and modelling techniques used in mountain regions, including model configuration and parameterizations such as turbulence, and model applications in operational forecasting. The book concludes with a discussion of the current state of research and forecasting in complex terrain, including a vision of how to bridge the gap in the future.

Download or read book Impacts of Climate Change on Human Health in the United States written by US Global Change Research Program and published by Simon and Schuster. This book was released on 2018-02-06 with total page 999 pages. Available in PDF, EPUB and Kindle. Book excerpt: As global climate change proliferates, so too do the health risks associated with the changing world around us. Called for in the President’s Climate Action Plan and put together by experts from eight different Federal agencies, The Impacts of Climate Change on Human Health: A Scientific Assessment is a comprehensive report on these evolving health risks, including: Temperature-related death and illness Air quality deterioration Impacts of extreme events on human health Vector-borne diseases Climate impacts on water-related Illness Food safety, nutrition, and distribution Mental health and well-being This report summarizes scientific data in a concise and accessible fashion for the general public, providing executive summaries, key takeaways, and full-color diagrams and charts. Learn what health risks face you and your family as a result of global climate change and start preparing now with The Impacts of Climate Change on Human Health.

Download or read book Methane Emissions from Major Rice Ecosystems in Asia written by Heinz-Ulrich Neue and published by Springer Science & Business Media. This book was released on 2000 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice production is affected by changing climate conditions and has the dual role of contributing to global warming through emissions of the greenhouse gas methane. Climate change has been recognized as a major threat to the global environment. Because of insufficient field data, rice-growing countries face a problem when trying to comply with the United Nations Framework Convention on Climate Change stipulations to compile a national inventory of emissions and to explore mitigation options. Given the expected doubling in rice production in Asia, the need to evaluate the interaction between climate change and rice production is critical to forming a sound basis for future directions of technology developments by policy makers, agriculturists, environmentalists, rice producers, and rice consumers. The present book comprises two sections. The first part documents a comprehensive overview of the results achieved from an interregional research effort to quantify methane emission from major rice ecosystems and to identify efficient mitigation options. This research report broadens understanding of the contribution of rice cultivation to methane emissions and clarifies that emissions are relatively low, except in specific rice ecosystems, and that these high emissions could be ameliorated without sacrificing yield. The second section shows results from other projects that investigated the role of rice cultivators in field and laboratory approaches. The findings represent inputs for future modeling approaches in the role of rice cultivators. The expanded database generated by other projects is reflected in modeling efforts.

Download or read book The Potential Effects of Global Climate Change on the United States written by and published by . This book was released on 1989 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photochemical Oxidants Executive Summary written by World Health Organization and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response to comments on section 183 e study and report to Congress written by and published by DIANE Publishing. This book was released on 1998 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book San Joaquin Valley Pipeline written by and published by . This book was released on 1987 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: