The inspiration for this monograph derived from the realization that
human technical capacity has become so great that we can, even without
malice, substantially modify and damage the gigantic and remote outer
limit of our planet, the stratosphere. Above the atmosphere of our
ordinary experience, the stratosphere is a tenuous layer of gas, blocked
from rapid exchange with the troposphere, some twenty kilometers above
the surface of the earth, seldom reached by humans, and yet a fragile
shell which shields life on earth from a band of solar radiation of
demonstrable injurious potential. It is immediately obvious that if
stratospheric ozone were reduced and consequently the intensity of solar
ultraviolet radiation reaching the earth's surface were increased, then
human skin cancer, known to be related to solar ultraviolet exposure,
would also be increased. But how does one even begin to estimate the
impact of changed solar ultraviolet radiation on such a diverse.
interacting, and complex ecosystem as the oceans? Studies which I
conducted in Iceland focused on this question and were noted to the
Marine Sciences Panel of the Scientific Affairs Committee of NATO by
Professor Unnsteinn Stefansson, leading to a request to investigate the
possibility of organizing a NATO sponsored Advanced Research Institute
on this topic.