Tag Archives: greenhouse gas emissions

Rising CO2 levels threaten aquatic life, studies show

a shoal of fish off the coast of queensland, australia
A shoal of fish off the coast of Queensland, Australia (Flickr/ robdownunder)

Both marine and freshwater species are affected by acidifying water in ways that disrupt the entire food web, scientists warn

January 18, 2018 — New studies warn that global warming is not good news for aquatic life, putting at risk the creatures both of the seas and of inland waterways. Continue reading Rising CO2 levels threaten aquatic life, studies show

Climate sensitivity study suggests narrower range of potential outcomes

power plants
New calculation of greenhouse gases’ effect on temperature reduces range of possible outcomes by more than half, researchers say.
Photograph: Ryan Tong/EPA

Findings should not be seen as taking pressure off need to tackle climate change, authors warn

January 18, 2018 — Earth’s surface will almost certainly not warm up four or five degrees Celsius by 2100, according to a study which, if correct, voids worst-case UN climate change predictions. Continue reading Climate sensitivity study suggests narrower range of potential outcomes

2017 was the hottest year on record without El Niño boost

global temperature map
Global temperature map, January to December 2017. Photograph: NOAA

Data shows the year was also one of the hottest three ever recorded, with scientists warning that the ‘climate tide is rising fast’

January 18, 2018 — 2017 was the hottest year since global records began that was not given an additional boost by the natural climate cycle El Niño, according to new data. Even without an El Niño, the year was still exceptionally hot, being one of the top three ever recorded. Continue reading 2017 was the hottest year on record without El Niño boost

UK to miss legal climate targets without urgent action, official advisers warn

committee on climate change
A series of government pledges have little or no detail on how they will be delivered, the Committee on Climate Change said.
Photograph: Marcin Rogozinski/Alamy

Vague ambitions, such as banning new petrol cars by 2040, must be turned into solid plans, says the Committee on Climate Change

January 17, 2018 — The UK will miss its legally binding carbon targets without urgent government action, official advisers have warned. Continue reading UK to miss legal climate targets without urgent action, official advisers warn

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

Qantas worst airline operating across Pacific for CO2 emissions, analysis reveals

qantas airlines
For each kilometre Qantas transports a passenger across the Pacific, it uses 64% more fuel than the two most fuel-efficient airlines, an analysis says. Photograph: Matthew Lloyd/Getty Images

Qantas used the two most fuel-intensive aircraft and carried the most empty seats of any transpacific airline

January 16, 2018 — Qantas emits more carbon dioxide per passenger-kilometre than any other airline operating across the Pacific, according to an analysis by the International Council on Clean Transportation, the group that exposed the Volkswagen emissions scandal in 2014. Continue reading Qantas worst airline operating across Pacific for CO2 emissions, analysis reveals

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

Five big gaps in national climate plans – and how to close them

hurricane harvey in texas
Response to Hurricane Harvey in Texas, US: rich countries are not immune from climate change impacts (Pic: Army National Guard/Lt Zachary West)

The Paris climate deal is based on pledges from 165 countries, but there are major omissions that need addressing before the next round in 2020

January 3, 2018 — The 165 national climate action plans submitted by countries to the UN climate negotiations are key to implementing the Paris Agreement. Continue reading Five big gaps in national climate plans – and how to close them

2017 was the hottest year on record without an El Niño, thanks to global warming

wildfire in ojai, california
Firefighters lighting backfires as they try to contain the Thomas wildfire in Ojai, California on on December 09, 2017. Photograph: Mark Ralston/AFP/Getty Images

Climate scientists predicted the rapid rise in global surface temperatures that we’re now seeing

January 3, 2018 — 2017 was the second-hottest year on record according to Nasa data, and was the hottest year without the short-term warming influence of an El Niño event: Continue reading 2017 was the hottest year on record without an El Niño, thanks to global warming

Paris climate deal bound to fail with current commitments

cop 21 in paris
STEP UP EFFORTS. In this file photo, negotiators await the final announcement during the COP21 in Paris, France in 2015. Photo by Arnaud Bouissou/MEDDE

With the current emission reduction targets set us on a pathway to 2.7-3.1 degrees Celsius, the report illustrates the urgent need for country leaders to step up their efforts to reach the targets set in the Paris climate agreement

MANILA, Philippines (Dec. 3, 2017) — The climate battle is an uphill trek. With our current commitments to reduce our carbon emissions, we are not on track to achieve the principal aim of the Paris climate agreement: keeping global temperature rise to well below 2 degrees Celsius, while pursuing 1.5 degrees Celsius. Continue reading Paris climate deal bound to fail with current commitments