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Mild El Nino Event May be Upcoming: Scientists

El Nino and La Nina are phases of what is known as the El Nino-Southern Oscillation cycle, or ENSO.

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FILE - A farmer works in an irrigated field near the village of Botor, Somaliland, April 16, 2016. Across the Horn of Africa, millions have been hit by the severe El Nino-related drought.-VOA

There is a 75 to 80 percent probability of an El Nino weather phenomenon developing within the next three months, the World Meteorological Organization reports.

Global seasonal climate data show precipitation patterns predicted for December to February resemble those normally associated with El Nino, WMO said, adding that it is not expected to be as powerful as the deadly event in 2015 and 2016, which caused droughts, flooding and coral bleaching around the world.

While a weaker El Nino is expected to emerge, WMO scientists warn it still can have a significant impact on rainfall and temperature patterns. They say it could adversely affect agriculture and food security, the management of water resources, and public health.

el nino weather
El Nino weather is sometimes referred to as the warm phase of ENSO. VOA

WMO spokeswoman Claire Nullis tells VOA neutral weather conditions have prevailed for the past few months, with neither El Nino nor its opposite La Nina present. While they are associated with extreme weather events, she says they are not the only factors.

“And we need to bear in mind, we have got climate change,” she said. “So, every El Nino, every La Nina, which takes place now is taking place against a background of the fact that we are living in a dramatically altered climate compared to even 50 years ago. So, the impacts, for instance, on heat waves are likely to be more pronounced than they were several decades ago.”

el nino Weather
An aerial view of a flooded village on the outskirts of Allahabad, India, August 24, 2016. REUTERS

El Nino and La Nina are phases of what is known as the El Nino-Southern Oscillation cycle, or ENSO. This phenomenon involves fluctuations in temperatures between the ocean and atmosphere in the equatorial Pacific.

Also Read: Balloon Missions by NASA May Lead To Improved Weather Forecasting

El Nino is sometimes referred to as the warm phase of ENSO, with La Nina acting as its cold opposite. WMO says both events have a major influence on weather and climate patterns over many parts of the world. (VOA)

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World’s First Green Concrete Being Used in a Road Trial in Sydney

Projects like this geopolymer trial can result in new products that make a real difference in slashing carbon emissions

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World, Green, Concrete
Nine sensors have been positioned under the concrete to monitor. Pixabay

 In a world’s first, ‘green’ concrete” which is made using industrial waste from coal-fired power stations and steel manufacturing is being used in a road trial in Sydney.

Researchers from the University of New South Wales, Sydney and research and innovation hub called CRC for Low Carbon Living (CRCLCL) would use results from the trial to create the first set of industry guidelines for “geopolymer” concrete.

Nine sensors have been positioned under the concrete to monitor and compare how the ‘geopolymer’ concrete performs.

“Projects like this geopolymer trial can result in new products that make a real difference in slashing carbon emissions.

World, Green, Concrete
CRC for Low Carbon Living (CRCLCL) would use results. Pixabay

“Local governments are responsible for maintaining local roads, so if we can purchase more environmentally sustainable materials, we can fight climate change,” said Lord Mayor Clover Moore.

Made from fly ash and blast furnace slag, ‘geopolymer’ generates just 300 kgs of CO2 per tonne of cement, compared with the 900 km from traditional cement production — saving the equivalent of the electricity used by an average household every two weeks.

The low-CO2 concrete has the potential to put the 400 million cubic tonnes of globally documented waste from the coal and steel industries to good use.

UNSW Sydney researchers will monitor the road performance for up to five years.

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“Research into geopolymer has been undertaken since the ’90s, but it’s only now that it’s starting to be commercialised,” said Professor Stephen Foster, Head of the School of Civil and Environmental Engineering at UNSW Sydney.

Concrete contributes 7 per cent of all greenhouse gas emissions and in 2018, the world produced about 4.1 billion tonnes of cement which contributed about 3.5 billion tonnes of CO2.

“Low-CO2 concrete materials offer potential benefits in reducing the greenhouse gas emissions associated with conventional concrete,” said Professor Foster. (IANS)