Days of high air pollution potential forecasted -- Average annual afternoon mixing depth -- Average annual wind speed through mixing depth -- Afternoon ventilation in spring -- Afternoon ventilation in summer -- Afternoon ventilation in winter / compiled by the U. S. Geological Survey from data provided by the National Center for Air Pollution Control, now the National Air Pollution Control Administration, Public Health Service, Department of Health, Education, and Welfare. (with) Estimated annual emissions and concentrations of sulphur dioxide : 1961-1965 -- Estimated annual concentration of suspended particulates and nitrogen dioxide : 1961-1965 / compiled from information provided by U. S. Public Health Service.

Description:

Seven physical maps representing the United States, featuring the number of days - annually - of high air pollution forecasted, as well as ventilation in all four seasons, as of 1970. Maps also show political boundaries, bodies of water, drainage, coastlines and islands. Maps include legends, as well as bar scales and scale statements. Presented... United States

Display date:

1970

Format:

image

Collections:

Digital Public Library of America

Contributors:

David Rumsey

Publisher:

United States Department of the Interior Geological Survey

Content partner:

David Rumsey

Availability:

Not specified