Winter Air Quality in Yellowstone National Park 2006 - 2007

ISBN-13: 9781494423407 / Angielski / Miękka / 2007 / 34 str.

John D. Ray Ph. D.; U. S. Department O. National Park Service

Opis

This report summarizes the carbon monoxide and particulate matter of 2.5 micrometers or less monitoring data from winter 2006-2007 and gives historical perspective of monitoring data at the park. The primary interest is trends in air quality that might reflect winter use policy and current conditions compared to the national standards set by the Environmental Protection Agency (EPA).