00000nam 2200000zi 4500 9.881065 CaOODSP 20241203113653 m o d f cr ||||||||||| 191024e19910515bcc o f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- En57-45/91-2E-PDF Atmospheric change issues : British Columbia perspective / Scientific Services Division, Atmospheric Environment Service, Pacific Region. Edited by Eric Taylor. [Vancouver] : Scientific Services Division, Atmospheric Environment Service, Pacific Region, May 15, 1991. 1 online resource (9 pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier Report PAES ; 91-2 Digitized edition from print [produced by Environment and Climate Change Canada]. "We are significantly changing the earth's atmosphere. Carbon dioxide concentrations have increased 25% over pre-industrial levels; methane concentrations have doubled in the last 200 years; and chlorofluorocarbons (CFCs) releases are increasing by 5-7% each year. Scientists are observing seasonal "holes" in the ozone layer over both polar regions. The future implications of global atmospheric change for agriculture, forestry, wildlife, and human settlements are disturbing. At the local level, urban air pollution is a threat to human health. Atmospheric change is a serious problem requiring serious responses. Significant changes are needed in development policies and planning. Although such changes may initially be difficult or expensive to accomplish, in the long run the benefits of these changes are likely to exceed the costs"--Page 1. gccst Climate change gccst Greenhouse effect gccst Global warming Taylor, Eric. Canada. Environment Canada. Canada. Atmospheric Environment Service. Pacific Region. Scientific Services Division. Report PAES ; 91-2. (CaOODSP)9.879827 PDF 873 KB https://publications.gc.ca/collections/collection_2019/eccc/En57-45-91-2-eng.pdf