Republic of the Philippines - Stamps & Postal History
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Se-tenant Pairs (60,000)
7p Save Our Sky, Save Yourself 7p Protect the Ozone Layer
Designer:
Philippine Ozone Desk Team led by Ella Deocadiz
Design Coordinators: Dr. Ngo Tiong Tak; Victorino Serevo;
Elenita San Diego
First Day Covers: Manila & Quezon City
PROTECT THE OZONE LAYER Although ozone (O3) is present in small concentrations throughout
the atmosphere, most ozone (about 90%) exists in the stratosphere,
in a layer between 10 and 50km above the surface of the earth. This
ozone layer performs the essential task of filtering out most of the
sun’s biologically harmful ultraviolet (UV-B) radiation.
Concentrations of ozone in the atmosphere vary naturally according
to temperature, weather, latitude and altitude. Furthermore,
aerosols and other particles ejected by natural events such as
volcanic eruptions can have measurable impacts on ozone levels.
There are possible ways to protect the ozone layer such as:
Save our sky, protect yourself, protect the ozone layer.
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