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Publish Date: 27 August 2020
There is a 60 percent chance of a weak La Niña event developing during September to November 2020, according to a new El Niño/La Niña update from the World Meteorological Organization. Despite the tendency for La Niña to have a cooling effect on global temperatures overall, above-average temperatures are expected to be predominant.
Climate change is one of the greatest challenges to human society in contemporary times. Statistics show that the last decades have already seen a sharp rise in economic, social and...
Bulletin nº Vol 64 (1) - 2015
Publish Date: 2 March 2015
Governments, private companies and individuals are demanding ever more sophisticated climate services, as manifested by the Global Framework for Climate Services (GFCS). But parts of the ocean observation network – paramount to the delivery of climate services – are at risk, and the evolution of climate prediction systems is not keeping pace in terms of accuracy and reliability. We are at a critical stage in observing and predicting the El Niño-Southern Oscillation (ENSO).
Bulletin nº Vol 58 (3) - 2009
Publish Date: 1 July 2009
There is little doubt now that climate change has serious development impacts. Factoring climate change into the development process is not only a fundamental necessity in terms of guiding the...
Publish Date: 1 January 2009
For 50 years, since Dave Keeling started monitoring carbon dioxide at Mauna Loa, Hawaii, and the South Pole, scientists have been tracking greenhouse and other trace gases in the global atmosphere. The results have revolutionized our understanding of biogeochemistry and demonstrated that human activities affect climate change and air quality.
Publish Date: 1 January 2009
In Asian monsoon countries, such as China and India, human health and safety problems caused by air pollution are becoming increasingly serious, due to the increased loading of atmospheric pollutants from waste gas emissions and from rising energy demand associated with the rapid pace of industrialization and modernization.
Bulletin nº Vol 57 (3) - 2008
Publish Date: 1 July 2008
Water managers and engineers sometimes make use of climate information and predictions at a range of temporal and spatial scales, and at other times use their own techniques to account for climate variability. In the longer term, the impacts of global warming will become of greater interest to water managers, as will improved short- and medium-term climate and hydrological predictions.
Publish Date: 1 July 2007
Fundamental barriers to advancing weather and climate diagnosis and prediction on time-scales from days to years are partly attributable to gaps in knowledge and the limited capability of contemporary operational and research numerical prediction systems to represent precipitating convection and its multi-scale organization, particularly in the tropics.