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Title Haze in the Grand Canyon : an evaluation of the winter haze intensive tracer experiment / Committee on Haze in National Parks and Wilderness Areas, Board on Environmental Studies and Toxicology, Board on Atmospheric Sciences and Climate, Commission on Geosciences, Environment, and Resources, National Research Council
Published Washington, D.C. : National Academy Press, 1990
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Description 1 online resource (x, 97 pages) : illustrations
Contents ""Haze in the Grand Canyon""; ""Copyright""; ""Preface""; ""Contents""; ""Executive Summary""; ""BACKGROUND""; ""THE NATIONAL RESEARCH COUNCIL STUDY""; ""QUALITATIVE ASSESSMENT""; ""QUANTITATIVE ASSESSMENT""; ""ESTIMATES OF THE RANGE OF POSSIBLE IMPACTS FROM NGS""; ""THE COMMITTEE'S CONCLUSIONS IN PERSPECTIVE""; ""Haze in the Grand Canyon""; ""Haze in the Grand Canyon: An Evaluation of the Winter Haze Intensive Tracer Experiment""; ""BACKGROUND""; ""THE NRC COMMITTEE STUDY""; ""The Committee, Its Charge, and Its Approach""; ""The Committee's Specific Interpretation of Its Charge""
""1.5 Measurement Program""""1.6 Report Outline""; ""References""; ""Chapter 9 Conclusions ""; ""9.1 Introduction""; ""9.2 Climatology of the Area""; ""9.3 Light Extinction Budget""; ""9.4 Attribution of Regional Sulfur and Visibility Impairment""; ""9.4.1 Emissions Analysis""; ""9.4.2 Trajectory and Streakline Analysis""; ""9.4.3 Spatial and Temporal Trends in Ambient Concentrations""; ""9.4.4 Deterministic Wind Field Modeling""; ""9.4.5 Tracer Mass Balance Regression (TMBR) Analysis""; ""9.4.6 Differential Mass Balance (DMB) Analysis""; ""9.4.7 Attribution of Visibility""
""9.4.8 Synthesis""""3.2 CD4 Tracer Injection""; ""3.3 Sample Collection""; ""Chemical Mass Balance With Unique Tracer""; ""Appendix 6B: Tracer Mass Balance Model Regression (TMBR) Model and Tracer Mass Balance (TMB) Model ""; ""OVERVIEW""; ""MODEL EQUATIONS""; ""MODEL CALCULATIONS AND UNCERTAINTIES""; ""Model Assumptions""; ""Potential Deviations From Assumptions""; ""Effect of Nonconstant Regression Coefficients In The TMB Model""; ""MODEL INPUTS""; ""MODEL OUTPUTS""; ""Appendix 3: CD4 As An Air-Mass Tracer""; ""Appendix 4: Commission On Physical Sciences, Mathematics, And Resources""
""EVALUATION OF WHITEX""""Whitex Overview""; ""WHITEX SOURCE-ATTRIBUTION MODELS""; ""CRITICAL ASPECTS OF WHITEX TECHNIQUES AND DESIGN""; ""Qualitative Assessment""; ""Meteorological Evidence""; ""Photographic Evidence""; ""Chemical and Physical Evidence""; ""Quantitative Assessment""; ""LIMITATIONS OF THE WHITEX STUDY""; ""Weaknesses in the Data Base""; ""Uncertainties about Tracer Data""; ""Absence of Measurements within the Grand Canyon""; ""Inadequacy of Background Measurements""; ""Departures from Statistical Assumptions""; ""Formulation of Statistical Models""
""Simplifications in the DMB Model""""Potential Covariance of NGS and Other Source Contributions""; ""Estimates of the Range of Possible Impacts of NGS Emissions at Hopi Point""; ""Minimum Conversion of SO2 to ""; ""Maximum Conversion of SO2 to ""; ""THE COMMITTEE'S CONCLUSIONS IN PERSPECTIVE""; ""CONCLUSIONS""; ""References""; ""Appendices""; ""Appendix 1: Nature of the Visibility Problem""; ""Contents""; ""Chapter 1 Introduction""; ""1.1 Overview""; ""1.2 Background""; ""1.3 Study Plan""; ""1.4 Interrelationships Between Aerosol, Optical and Visibility Apportionment""
Notes Committee chairman: Robert A. Duce
Support for this study was provided by the Department of the Interior, Department of Energy, Environmental Protection Agency, and the Arizona Salt River Project
Bibliography Includes bibliographical references
Notes Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. MiAaHDL
Print version record
Subject Air -- Pollution -- Arizona -- Grand Canyon National Park.
Form Electronic book
Author Duce, Robert A., 1935-
National Research Council (U.S.). Board on Atmospheric Sciences and Climate.
National Research Council (U.S.). Board on Environmental Studies and Toxicology.
National Research Council (U.S.). Commission on Geosciences, Environment, and Resources.
National Research Council (U.S.). Committee on Haze in National Parks and Wilderness Areas.
ISBN 0309596084 (electronic bk.)
0585085137 (electronic bk.)
9780309596084 (electronic bk.)
9780585085135 (electronic bk.)