Download or read book Recent Studies of Air Pollution Meteorology in Oregon written by William P. Lowry and published by . This book was released on 1965 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Pollution Meteorology and Chemistry Research written by Oregon State University. Air Resources Center and published by . This book was released on 1973 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fourth Joint Conference on Applications of Air Pollution Meteorology written by and published by . This book was released on 1984 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climatological Data written by and published by . This book was released on 1948 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Effects of Meteorological Processes on the Air Quality in Medford Oregon written by Boris R. Pavelka and published by . This book was released on 1966 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Medford, Oregon, the major source of pollution is the lumber mill waste burner. Its low combustion efficiency results in the emission of large quantities of particulate into the atmosphere. Due to the influence of the atmospheric radiation inversion and possibly the poor performance of the burners at the time of start-up, concentrations of particulate were found to be highest in the morning. Correlating these morning concentrations with average surface relative humidity, average surface wind speed, and various stability indices, most of which were determined from the U.S. Weather Bureau's 0300 PST radiosonde release, provided a measure of the degree of relationship between these meteorological factors and pollution. In addition, the analysis resulted in a determination of what stability factors could readily be used to predict pollution concentrations with reasonable accuracy (correlation coefficients ≥ 0.65). These included the sounding energy to 850 mb (energy required to lift a parcel of air from surface to 850 mb), the temperature difference index (difference in temperature between 850 mb and surface), the Modified Showalter Stability Index (Showalter Index applied to the layer of air between surface and 850 mb), and the persistence index (the sum of three weighted Modified Showalter Index values for three consecutive mornings). Graphical and regression prediction models involving the persistence index and average surface wind speed were developed. These relationships proved to be more accurate in predicting morning concentrations of particulate (multiple correlation coefficients 0.84) than those involving only one meteorological variable (highest correlation coefficient = 0.74). In order to illustrate the effects of air pollution on visibility, a preliminary relationship between concentrations of suspended particulate and visibility was developed. If visibility were selected as the criterion for judging air quality as it might well be in a tourist-oriented economy, such a relationship could serve as the basis for forecasting conditions of unacceptably low visibility as a result of high concentrations.
Download or read book Oregon Air Quality Annual Report written by Oregon. Air Quality Division and published by . This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climatological Data Oregon written by United States. Environmental Data Service and published by . This book was released on 1995 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Research in Air Pollution Projects Active in Calendar Year 1969 Seventh Edition written by Pennsylvania State University. Center for Air Environment Studies and published by . This book was released on 1970 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin of Air Pollution Training Courses written by United States. National Air Pollution Control Administration. Office of Manpower Development. Institute for Air Pollution Training and published by . This book was released on 1970 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Quality Climate in the Columbia River Basin written by Sue A. Ferguson and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aspects of climate that influence air quality in the Columbia River basin of the Northwestern United States are described. A few, relatively simple, analytical tools were developed to show the spatial and temporal patterns of mean-monthly mixing heights, precipitation scavenging, upper level and surface trajectory winds, and drought that inhibit pollution uptake. Also, potential changes in air quality from the effects of increasing greenhouse gases are discussed.
Download or read book Optimum meteorological and air pollution sampling network selection in cities written by Walter D. Bach and published by . This book was released on 1981 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ORD Publications Summary written by United States. Environmental Protection Agency. Office of Research and Development and published by . This book was released on 1976 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Pollution Training Programs written by United States. Division of Air Pollution and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relationships Between Air Quality and Thermal Structure of the Lower Atmosphere at Salem Oregon written by James L. McElroy and published by . This book was released on 1966 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The examination in some detail of the relationships between air quality and the thermal structure of the lowest layers of the atmosphere constituted the primary objective of this thesis. Data for the study were assembled during April-June 1965 at the U.S. Weather Bureau Station, McNary Field, Salem, Oregon. The measures of air quality employed were the estimated mean concentrations of suspended particulate material collected on standard high volume filters near the surface during two six-hour periods each day : early morning (0000 to 0600 L.S.T.) and afternoon (1200 to 1800 L.S.T.). To represent thermal structure, lapse rates of temperature were computed twice daily for each 150-meter-thick layer of air between the surface and 1500 meters above the surface. The information for these computations was taken from the original records of the U.S. Weather Bureau radiosonde flights conducted daily at 0300 and 1500 L.S.T. Graphical and statistical analysis of the relationships between lapse rate and air quality for each of the 150-meter-thick layers and each of the cumulative layers (by 150 meter increments) originating at the surface produced results that were quite different for the morning and afternoon sampling periods. The relationships for the morning period were determined graphically to be continuous and determined statistically to be linear. For this period the stability of the lowest 450 meters appeared to affect most directly the air quality while the thermal structure above about 1000 meters appeared unrelated to air quality. The afternoon relationships, on the other hand, were poorly defined. In fact, the air quality of the afternoon period was better related to the thermal structure of the early morning period than to the contemporaneous thermal structure. On the premise that for a given lapse rate, air quality may fluctuate because of variations in pollutant emission rates and/or because of changes in meteorological variables, supplementary studies were conducted. The test procedure was the same for each variable, and consisted of dividing the data for each sampling period into classes of the parameter, then comparing the resulting relationships both graphically and statistically with the combined relationships. Surface wind velocities, average upper air wind speeds, prominent synoptic features and air mass types, and the stability of the lowest layers of the atmosphere prior to the beginning of the sampling periods were the meteorological parameters considered. Division of data by weekend and work week, and then by day of the week was also considered to assess possible variations of pollutant emission rates over these periods. In no case did subdivision of data by additional parameters produce any apparent increased information. Since pilot balloon data are more numerous and less expensive than corresponding radiosonde data, and since theory indicates that wind shear may be a reasonable estimate of stability, the vertical shears of the horizontal wind profiles of the lower atmosphere were also compared with concurrent estimates of air quality. The relationships between shear and air quality for both sampling periods were judged both graphically and statistically to be poorly defined. Although the development of relationships for the purposes of estimating and predicting air quality was not an objective of this study, many of the developed relationships between lapse rate and air quality might be used for one of these purposes. In particular, selected combinations of lapse rate of the morning period may be used as an estimator of air quality for this period. Similarly, lapse rate of the morning period might be utilized as a predictor of air quality of the afternoon period.
Download or read book Third Conference on Mountain Meteorology written by and published by . This book was released on 1984 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Air Pollution in the Vicinity of Portland Oregon written by Stanford Research Institute and published by . This book was released on 1956 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Research written by and published by . This book was released on 1969 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
