Tag Archives: el niño impacts

New study ‘reduces uncertainty’ for climate sensitivity

view on the sun over inversion from jested
View on the sun over inversion from Jested, Jested-Kozakov ridge, Czech Republic. Credit: Nataliya Hora / Alamy Stock Photo

Scientists have presented a new, narrower estimate of the “climate sensitivity” – a measure of how much the climate could warm in response to the release of greenhouse gases

January 17, 2018 — The latest assessment report from the Intergovernmental Panel on Climate Change (IPCC) estimates that climate sensitivity is close to 3°C, with a “likely” range of 1.5 to 4.5°C. Continue reading New study ‘reduces uncertainty’ for climate sensitivity

Learning From an Extreme El Niño

2015-2016 extreme el nino
The 2015-2016 extreme El Niño brought drought and fire to Indonesia. Smoke from extensive and uncontrollable forest fires blankets southern Borneo in October 2015. It spread westward causing severe haze over Singapore and Malaysia. Credit: NASA/JPL-Caltech/MISR instrument team

A recent paper in Reviews of Geophysics describes new scientific insights on the El Niño-Southern Oscillation from analysis of the 2015-2016 extreme El Niño

January 10, 2018 — The El Niño-Southern Oscillation (ENSO) cycle is a periodic change in the ocean-atmosphere system of the tropical Pacific Ocean but which has knock-on effects on weather around
the world. In an article recently published in Reviews in Geophysics, Santoso et al. [2017] examined the 2015-2016 El Niño event which was particularly extreme. The editor asked one of the authors to explain the characteristics of that El Niño and what scientists learned from it. Continue reading Learning From an Extreme El Niño

Severe coral reef bleaching now ‘five times more frequent’ than 40 years ago

scientific diver taking notes during coral bleaching event
Scientific diver taking notes during coral bleaching event at Alcatrazes island, Sao Paulo state shore, Brazil. Credit: Leo Francini / Alamy Stock Photo.

Mass coral reef bleaching events have become five times more common worldwide over the past 40 years, new research finds, with climate change playing a significant role in the rise

January 4, 2018 — The scale of bleaching has been rising steadily in the last four decades, a study author tells Carbon Brief, with the global proportion of coral being hit by bleaching per year rising from 8% in the 1980s to 31% in 2016. Continue reading Severe coral reef bleaching now ‘five times more frequent’ than 40 years ago

More coral bleaching feared for Great Barrier Reef in coming months

coral bleaching in great barrier reef
The coral bleaching events of 2016 and this year are said to have killed about half the Great Barrier Reef’s coral cover. Photograph: Greenpeace/Reuters

The next event, if it occurs, may not be as damaging as the previous two, but could ruin the chances of coral recovery

November 3, 2017 — The Great Barrier Reef could face more bleaching in the coming months, following unprecedented mass bleaching events in 2016 and 2017, which are believed to have killed half the coral. Continue reading More coral bleaching feared for Great Barrier Reef in coming months

Study finds human influence in the Amazon’s third 1-in-100 year drought since 2005

amazon basin
Aerial view of a drought-affected area within the Amazon Basin on November 5, 2010 in Manaus, Brazil. Photograph: Rodrigo Baleia/LatinContent/Getty Images

Deforestation and climate change appear to be amplifying droughts in the Amazon

August 3, 2017 — If you are like me, you picture the Amazon region as an ever lush, wet, tropical region filled with numerous plant and animal species. Who would imagine the Amazon experiencing Continue reading Study finds human influence in the Amazon’s third 1-in-100 year drought since 2005

Extreme El Niño events more frequent even if warming limited to 1.5C – report

extreme el niño
The risk of extreme El Niño events would rise from five events per century to 10 by 2050 under a scenario that presumes warming peaks at 1.5C by that year. Photograph: Alamy

Modelling suggests Australia would face more frequent drought-inducing weather events beyond any climate stabilisation

July 25, 2017 — Extreme El Niño events that can cause crippling drought in Australia are likely to be far more frequent even if the world pulls off mission improbable and limits global warming to 1.5°C. Continue reading Extreme El Niño events more frequent even if warming limited to 1.5C – report

‘Extreme’ El Niños to double in frequency under 1.5C of warming, study says

floodwaters along the pearl and leaf rivers
Aerial view of homes submerged in floodwaters along the Pearl and Leaf Rivers after record breaking storms dumped rain across the deep south, 13/03/2016, St Tammany Parish, Louisiana. Credit: US Army Photo/Alamy Stock Photo.

The El Niño event of 2015-16 was one of the strongest on record, bringing flooding to much of South America, southern US and East Africa, and severe drought to Australia and southeast Asia

July 24, 2017 — Now a new study, published in Nature Climate Change, suggests that similar “extreme” El Niño events could become more frequent as global temperatures rise. Continue reading ‘Extreme’ El Niños to double in frequency under 1.5C of warming, study says

Worst global coral bleaching event eases, as experts await next one

bleached coral on the great barrier reef near port douglas
Bleached coral on the Great Barrier Reef near Port Douglas in February. Photograph: HANDOUT/Reuters

US researchers believe worst event on record is ending but fear coral won’t recover in time before oceans warm again

June 20, 2017 — The worst coral bleaching event in recorded history, which has hit every major coral region on Earth since 2014, appears to be coming to an end, with scientists now worrying how long reefs will have to recover before it happens again. Continue reading Worst global coral bleaching event eases, as experts await next one

Zero recovery for corals in back-to-back Australia bleaching

aerial view of a section of the great barrier reef near cairns
An aerial view of a section of the Great Barrier Reef near Cairns, Australia, March 2017. Photo courtesy Ed Roberts/ARC Centre of Excellence for Coral Reef Studies

The Barrier Reef is already under pressure from farming runoff, development and the crown-of-thorns starfish

SYDNEY, Australia (Apr. 10, 2017) — Coral bleached for two consecutive years at Australia’s Great Barrier Reef has “zero prospect” of recovery, scientists warned Monday, April 10, as they confirmed the site has again been hit by warming sea temperatures. Continue reading Zero recovery for corals in back-to-back Australia bleaching

El Niño shifts cholera burden onto East Africa

lingering cholera outbreak
Humanitarian aid in Turkana, Kenya, in response to a lingering cholera outbreak. ©EU/ECHO/Anouk Delafortrie.

In 2015-16, one of the strongest El Niño events in recorded history played havoc with the world’s weather. Among its impacts, heavy rainfall brought flooding to much of East Africa, affecting millions of people

April 10, 2017 — In the wake of the floods came a cholera epidemic, with outbreaks in Tanzania, Kenya, Somalia and Ethiopia. In Tanzania, for example, more than 24,000 people contracted the bacterial disease and 378 died. Continue reading El Niño shifts cholera burden onto East Africa