World Meteorological Day 2019

WMD_en

The Sun, the Earth and the Weather is the theme of this year’s World Meteorological Day. It highlights the role of the Sun in delivering the energy that powers all life on Earth, and drives the weather, ocean currents and the hydrological cycle.

World Meteorological Day on 23 March celebrates the anniversary of the convention establishing WMO in 1950 and showcases the essential contribution of the WMO community to the safety and well-being of society.

National Meteorological and Hydrological Services provide expertise and services both to harness the power of the Sun and to protect us from it. These include 24/7 weather observations and forecasts, as well as monitoring of atmospheric greenhouse gases, ultraviolet radiation, aerosols and ozone and their consequent effects on people, climate, air and water quality and marine and terrestrial life.

Sunlight plays a pivotal role in human health and well-being. Too little Sun impacts our mood and well-being and increases the risk of Vitamin D deficiency. Overexposure to sunlight causes harmful effects on the skin, eyes, and immune system. Experts believe that four out of five cases of skin cancer could be prevented, as UV damage is mostly avoidable.

The ultraviolet index or UV Index is an international standard measurement of the strength of sunburn-producing ultraviolet radiation at a particular place and time. Many national meteorological services provide information and alerts on UV levels, and work with health authorities to disseminate safety tips to the public.