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Publish Date: 13 May 2016
The previously strong 2015-16 El Niño is now weakening rapidly. However it is still likely to influence climate patterns in some regions until mid-year. Climate prediction models indicate a return to ENSO-neutral during May 2016, with odds now increasing of La Niña development in the third quarter. A resurgence of El Niño is highly unlikely in 2016. National Meteorological and Hydrological Services will closely monitor changes in the state of ENSO over the coming months. Ocean temperatures in the central and eastern tropical Pacific Ocean exceeded +2.0 degrees Celsius above average between...
Publish Date: 2 March 2015
Hydrological conditions in Australia are among the most variable on Earth. Its streamflow regime can go through prolonged periods of droughts such as the “Millennium drought” that occurred between 1997 and 2000 across most parts of eastern Australia. This variability has a profound impact on the management of water resources in Australia, and more specifically on the management of risks related to water supply for urban, irrigation and environmental needs.
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).
Publish Date: 1 March 2014
Based on the UNEP Global Environment Alert Service (GEAS) bulletin January 2014 Diversion of water sources has caused the Aral Sea in Central Asia to decline significantly over the past five decades.
Bulletin nº Vol 62 (Special Issue) - 2013
Publish Date: 1 June 2013
In 2009 when world leaders from 155 countries agreed to establish a Global Framework for Climate Services (GFCS), a challenge was launched to both the scientific community and the users of climate services to galvanize collaborative efforts to develop effective climate services in support of decision-making.
Publish Date: 18 May 2016
Human activity has increased the direct warming effect of carbon dioxide (CO₂) in the atmosphere by 50 percent above pre-industrial levels during the past 25 years, according to NOAA's 10th Annual Greenhouse Gas Index . In 2015, the global average CO₂ concentration reached 399 parts per million, increasing by a record amount of almost 3 ppm. From the end of the Ice Age to the beginning of the industrial era, atmospheric carbon dioxide remained remarkably stable at 278 ppm.
Publish Date: 20 May 2016
Global temperature records were broken yet again in April for the 12th consecutive month, the longest such streak in the 137-year record of the U.S. National Oceanic and Atmospheric Administration (NOAA ). Overall, 13 out of the 15 highest monthly temperature departures in the record have all occurred since February 2015. NOAA said the combined average temperature over global land and ocean surfaces for April 2016 was 1.10°C (1.98°F) above the 20th century average of 13.7°C (56.7°F) - the highest temperature departure for April since global records began in 1880. This value surpassed the...
Bulletin nº Vol 59 (2) - 2010
Publish Date: 1 November 2010
by Andrew Thow Climate services are a key to supporting Haiti’s effort to rebuild its country, after the devastating earthquake early this year.
Bulletin nº Vol 59 (1) - 2010
Publish Date: 1 January 2010
With this year’s World Meteorological Day, WMO celebrates “60 years of service for your safety and well-being”. This issue of the Bulletin joins the celebration, taking a look at the...