Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


Emissions growing but limiting warming remains possible

Greenhouse gas emissions growing but limiting warming remains possible
STRICTLY EMBARGOED TO 9pm, 13 April, NZ time


On Sunday in Berlin the Intergovernmental Panel on Climate Change (IPCC) released a further climate change assessment report. This “Fifth Assessment Working Group 3 report” documents recent trends in greenhouse gas emissions and identifies their sources. It assesses options for reducing emissions of these gases in order to limit future human- induced changes in climate.

The report shows that global greenhouse gas emissions have continued to grow – on average at 2.2% per year between 2000 and 2010. Carbon dioxide remains the major long-lived greenhouse gas emitted as a result of human activities. Economic growth and population growth are the two main drivers of recent increases in global carbon dioxide emissions from fossil fuel combustion. They outpaced gains from producing and using energy more efficiently.

The report considers a wide range of potential scenarios for future greenhouse gas emissions, and concludes that scenarios that limit CO2-equivalent concentrations in 2100 to about 450 parts per million are likely to keep global temperature change below 2°C. It says such scenarios include substantial cuts in anthropogenic greenhouse gas emissions by mid-century. (Countries that have ratified the United Nations Framework Convention on ClimateChanges (UNFCCC) have agreed to a long-term goal of keeping global temperature increases below 2°C compared to pre-industrial times).

The report says that without additional efforts to reduce greenhouse gas emissions,emissions growth is expected to persist. But it also identifies and assesses measures and technologies that could assist with reducing emissions. Potential improvements are available through low-carbon energy generation, more energy-efficient transport, buildings and industry, reduced deforestation, bioenergy, better management of cropland and grazing land, and urban planning affecting infrastructure, land use and transport choices.

Dr David Wratt of the NZ Climate Change Centre and NIWA has attended the plenary meetings of all three IPCC Working Groups. He says: “The first two reports of the IPCC Fifth Assessment confirm that climate change poses major problems. This third report shows that our actions to date are not enough to put us on a global track for limiting warming to 2 degrees. But the report also provides options for reducing emissions – and shows that if we make sufficient reductions we can escape some of the more serious impacts that would result from unconstrained climate change”.

Full text of the “Summary for Policymakers” of the IPCC Working Group 3 Report will be available on the IPCC website (www.ipcc.ch). Three New Zealand experts contributed substantially to the report: Professor Ralph Sims of Massey University as a Convening Lead Author of the chapter on Transport, Dr Harry Clark Director of the New Zealand Agricultural Greenhouse Gas Research Centre as a Lead Author of the chapter on Agriculture, Forestry and Other Land Uses, and Dr AdamJaffe Director of Motu Economic & Public Policy Research as a Lead Author of the chapter on National and Sub-National Policies.ext of the “Summary for Policymakers” of the IPCC Working Group 3 Report will be available on the IPCC website (www.ipcc.ch). Three New Zealand experts contributed substantially to the report: Professor Ralph Sims of Massey University as a Convening Lead Author of the chapter on Transport, Dr Harry Clark Director of the New Zealand Agricultural Greenhouse Gas Research Centre as a Lead Author of the chapter on Agriculture, Forestry and Other Land Uses, and Dr AdamJaffe Director of Motu Economic & Public Policy Research as a Lead Author of the chapter on National and Sub-National Policies.


© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

No Voda/Sky: Commission Declines Clearance For Merger

The Commerce Commission has declined to grant clearance for the proposed merger of Sky Network Television and Vodafone New Zealand. More>>

ALSO:

EARLIER:

Power: IEA Report On New Zealand's Energy System

Outside of its largely low-carbon power sector, managing the economy’s energy intensity and greenhouse gas emissions while still remaining competitive and growing remains a challenge. More>>

ALSO:

NASA: Seven Earth-Size Planets Around A Single Star

NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water. More>>

ALSO:

Auckland Transport Case: Men Guilty Of Corruption And Bribery Will Spend Time In Jail

Two men who were found guilty of corruption and bribery in a Serious Fraud Office (SFO) trial have been sentenced in the Auckland High Court today... The pair are guilty of corruption and bribery offences relating to more than $1 million of bribes which took place between 2005 and 2013 at Rodney District Council and Auckland Transport. More>>

ALSO:

Hager Raid: Westpac Wrong To Release Bank Records To Police

The Privacy Commissioner has censured Westpac Banking Corp for releasing without a court order more than 10 months of bank records belonging to the political activist and journalist Nicky Hager during a police investigation into leaked information published in Hager's 2014 pre-election book, 'Dirty Politics'. More>>

ALSO:

EARLIER:

Get More From Scoop

 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news