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

 

Scoop Business: Leighton-Led WGP To Build, Manage Transmission Gully

The Wellington Gateway Partnership, led by a unit of ASX-listed Leighton Holdings, has won the $1 billion contract to build the Transmission Gully road north of Wellington. More>>

ALSO:

Gareth Morgan: The Government’s Fresh Water Policy – Revisited

Fresh water quality is the latest area to be in the sights of Gareth Morgan and his research organisation The Morgan Foundation... They found that the fresh water policy was a bit murkier than the Environment Minister let on. More>>

ALSO:

Interest Rates: RBNZ Hikes OCR To 3.5%, ‘Period Of Assessment’ Now Needed

Reserve Bank governor Graeme Wheeler raised the official cash rate as expected, while signalling a pause in rate hikes to assess the impact of moves so far this year. The kiwi dollar sank after Wheeler said its strength was “unjustified” and that the currency could have “a significant fall.” More>>

ALSO:

Fonterra: Canpac Site 'Resize' To Focus More On Paediatrics

Fonterra is looking at realigning its packing operations at Canpac, in the Waikato, to focus more on paediatric nutritionals... The proposed changes could mean around 110 roles may not be required at the site which currently employs 330. More>>

ALSO:

Scoop Business: Postie Plus Brand Gets 2nd Chance With Well-Funded Pepkor

The Postie Plus brand is getting a new lease of life after South Africa’s Pepkor bought the failed retailer’s assets out of administration and said it will use its purchasing power to reduce costs of stock and fatten margins. More>>

ALSO:

Warming: Warming Signs From State Of Climate Report

Climate data from air, land, sea and ice in 2013 'reflect trends of a warming planet' -- says the latest State of the Climate report, launched by U.S. and New Zealand scientists. More>>

ALSO:

Get More From Scoop

 
 
Computer Power Plus

Standards New Zealand

Standards New Zealand
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news