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UN launches global greenhouse gas emissions calculator

First Posted 09:36:00 03/24/2010

MANILA, Philippines?The United Nations on Wednesday launched the first common system of calculating the amount of greenhouse gases produced in a given city and by specific sector or time, allowing cities to compare their performances and analyze differences.

According to the UN office here, the UN Environment Program (Unep), UN Human Settlements Program (UN-Habitat), and the World Bank jointly launched the Global Greenhouse Gas Standard for cities at the World Urban Forum in Rio De Janeiro.

While measurement should not delay action, a critical requirement to support policy and access to finance is the establishment of an open, global, and harmonized protocol for quantifying the GHG emissions attributable to cities and local regions, Unep, UN-Habitat, and the World Bank said in a jointly issued press release.

The Greenhouse Gas Standard calculates emissions on a per capita basis. For example, greenhouse gas emissions are 4.20 tons of carbon dioxide per capita in Barcelona, Spain, 10.6 in Bangkok, Thailand, and 17.8 in Calgary, Canada.

The new common standard also takes into account cities? primary energy sources, climate, means of transportation, and urban form. As a result, a high-density city like New York produces 10.4 tons per capita, while another United States city, Denver, emits 21.3 tons per capita.

The new common standard also allows cities to compare their emissions over time, across cities, and in specific sectors such as energy, transportation, or waste.

At the launch, the organizers stressed that city mayors and other urban leaders, business, and civil society recognize the need to act to reduce climate change in cities.

?In reducing greenhouse gas emissions, cities are part of the solution: City officials are discovering new ways to get people out of cars and into rapid transit buses; to harness the methane released by landfills and turn it into energy; to support compact urban development and not urban sprawl,? said Anna Tibaijuka, Undersecretary General and Executive Director of UN-Habitat.

Officials also stressed that cities can be the key catalyst towards the international aim of keeping a global temperature rise to less than 2 degrees Celsius.

?The Copenhagen Accord, for which 110 countries representing over 80 percent of global emissions have expressed support, remains a work in progress. There remains an ambition gap between where we are and where we need to be in 2020?bigger cuts by cities may be one route towards bridging this divide,? said Achim Steiner, Undersecretary General and Unep executive director.

Secretary General Ban Ki-moon said last week that the UN Framework Convention on Climate Change will continue to spearhead international negotiations on climate change ahead of the Cancun summit in November where participants will be aiming to reach a global, binding deal on climate change.

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