The ozone layer is critical to life on the planet. The interactions between ozone-depleting substances, stratospheric ozone (the ozone layer), ground-level ozone, climate change, and UV radiation from the sun are very important to all organisms on earth, including humans. UV radiation has direct effects on human health and also affects everyone indirectly through effects on crops, livestock, air pollution, and the natural environment.
The report details the various effects of UV radiation on human health (including skin cancers and cataracts), ecosystems, biogeochemical cycles, air quality and materials. It also examines how ozone depletion may interact with climate change, both through changes in UV radiation and its environmental effects.
The report notes that without the Montreal Protocol, runaway ozone depletion would have led to large increases in UV radiation around the world, with major consequences for the risk of skin cancer. The success of the Protocol in controlling ozone depletion has confined increases in UV radiation to the extreme south of the southern Hemisphere, and a few short-term episodes over the Arctic.
The report also observes that with continued effective implementation of the Montreal Protocol, future changes in UV radiation outside the polar regions will likely be dominated by changes in factors other than ozone, including changes in climate and air pollution.
The report adds that levels of UV radiation in the polar regions will be determined by the recovery of stratospheric ozone and by changes in clouds and reflectivity of the Earth’s surface.
Started in year 2010, ‘Climate Himalaya’ initiative has been working on Mountains and Climate linked issues in the Himalayan region of South Asia. In the last five years this knowledge sharing portal has become one of the important references for the governments, research institutions, civil society groups and international agencies, those have work and interest in the Himalayas. The Climate Himalaya team innovates on knowledge sharing, capacity building and climatic adaptation aspects in its focus countries like Bhutan, India, Nepal and Pakistan. Climate Himalaya’s thematic areas of work are mountain ecosystem, water, forest and livelihood. Read>>