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All life depends on a healthy planet, but the interwoven systems of atmosphere, oceans, watercourses, land, ice cover and biosphere, which form the natural environment, are threatened by human activities. The Global Atmosphere Watch (GAW) programme provides reliable scientific data and information on aerosols, greenhouse gases, selected reactive gases, ozone, ultraviolet radiation and precipitation chemistry (or atmospheric deposition).
Strengthen the global observing systems through full implementation of WMO Integrated Global Observing System (WIGOS) and WMO Information System (WIS) for robust, standardized, integrated, accurate and quality assured relevant observations of the Earth System to support all WMO priorities and expected results.
Setting technical standards, quality control procedures and guidance for the use of meteorological instruments and observation methods in order to promote development documentation and worldwide standardization.
Start date16 October 2015
Publish Date: 8 February 2019
WMO hosted a meeting of UN Oceans, as part of a week of ocean related events to focus attention on ocean science, observations and safety. UN-Oceans is the UN inter-agency coordination mechanism for ocean matters .
Publish Date: 8 February 2019
The full Scientific Assessment of Ozone Depletion is now available. It shows that actions taken under the Montreal Protocol have led to decreases in the atmospheric abundance of controlled ozone-depleting substances (ODSs) and the start of the recovery of stratospheric ozone.
The Global Climate Observing System (GCOS) is a co-sponsored programme which regularly assesses the status of global climate observations and produces guidance for its improvement. It is co-sponsored by the...
Start date1 June 1992
Publish Date: 21 January 2019
Environmental risks continue to dominate the World Economic Forum’s annual Global Risks Perception Survey, accounting for three of the top five risks by likelihood and four by impact.
Bulletin nº Vol 65 (1) - 2016
Publish Date: 21 March 2016
In pitch dark at 40 below, a research expedition set out to the icy Arctic Ocean in January 2015.Their goal: to better understand ongoing changes in the Arctic due to a shift from an older and thicker ice cover that would survive the summer melt to a younger and thinner one that, to a larger degree, melts away in the summer.
Bulletin nº Vol 64 (1) - 2015
Theme: Environmental challenges
Publish Date: 2 March 2015
As atmospheric CO 2 continues to increase, more and more CO 2 enters the ocean, which reduces pH (pH is a measure of acidity, the lower the pH, the more acidic the liquid) in a process referred to as ocean acidification. Declines in surface ocean pH due to ocean acidification are already detectable and accelerating.