Tag: Wind

Development in Offshore wind capacity
Offshore wind, currently around 3 000 MW, has mainly been concentrated in northern European countries, around the North Sea and the Baltic Sea. Europe’s leadership is primarily attributed to public policy and a thriving...
16 Oct 2013 - by GRID-Arendal
Looking further offshore and in deeper waters
The high capital cost of offshore foundations bounds offshore wind energy to near shore locations. Most of the capacity has been installed in relatively shallow waters (under 20 m deep) no more than 20 km from the coast...
16 Oct 2013 - by GRID-Arendal
Intense hurricanes in the Atlantic Basin
Global average temperature increased by 0.6 ° C over the last century, while sea levels rose by 9 to 20 cm. The IPCC projects increases in the global average surface temperature by between 1.4°C and 5.8°C and in sea leve...
17 May 2005 - by UNEP/GRID-Arendal
The World is Losing its Mangroves
Mangrove forests occur naturally in intertidal zones along sheltered shorelines and in deltas in tropical regions. They are vital breeding grounds for fish and shrimp and also provide a buffer against coastal hazard...
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
Potential renewable energy by region
In million tonnes of oil equivalent: wind, solar energy, biomass and hydroelectricity, comparison between different regions. All these energy sources stand as possible renewable alternatives to nuclear power and fossil f...
14 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Wind power generation per region
Wind energy generating capacity, trends in the time period 1980-1995, in megawatts for Asia, Europe And Northern America. Wind power remains one of the cleanest alternatives to fossil fuels and nuclear power.
14 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Trends in wind generating capacity
Global development of wind in the form of wind power plants between 1980-1995, in megawatts. Wind power represents one of the most attractive and clean alternative and renewable power sources, utilizing the inhert power ...
01 Oct 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Regional trends in wind power generation
Wind power remains one of the cleanest alternatives to fossil fuels and nuclear power. Wind energy generating capacity, trends in the period 1980-1995, in megawatts for Asia, Europe And Northern America.
14 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Trends in wind energy generating capacity
Net annual addition to global wind energy generating capacity, general trend 1980-1995, in megawatts. Wind power represents a possible energy source to replace fossil fuels, like oil and coal, as well as non-renewable en...
14 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Radioactive waste hotspots and transboundary pollution in Central Asia’s Ferghana Valley
The Soviet Union used the Ferghana Valley as one of its main sources of metal and uranium ore. The area has many nuclear waste storage sites, abandoned uranium mines with poorly secured tailing dams and nuclear reacto...
15 Dec 2006 - by Emmanuelle Bournay
Mining and ore waste
Mining waste takes up a great deal of space, blights the landscape and often affects local habitats. By its very nature it can constitute a serious safety hazard. Poor management may allow acidic and metals containing d...
15 Dec 2006 - by Diana Rizzolio
Overview of renewable energy sources
This chart shows eight different sources of renewable energy and explains advantages and drawbacks of each - wind, sun (photovoltaic and thermal), geothermal, wood, ocean, waste, water (hydroelectricity).
17 May 2005 - by UNEP/GRID-Arendal
Environment in Central Asia [Russian]
There are 25 billion tonnes of waste just from mining and metal production in Central Asia. The most effected areas are highlighted based on a variety of different types of environmental damage such as desertification an...
14 Feb 2006 - by I. Atamuradova, V. Yemelin, P. Rekacewicz, UNEP/GRID-Arendal
Environment in Central Asia
There are 25 billion tonnes of waste just from mining and metal production in Central Asia. The most effected areas are highlighted based on a variety of different types of environmental damage such as desertification an...
14 Feb 2006 - by I. Atamuradova, V. Yemelin, P. Rekacewicz, UNEP/GRID-Arendal
Hazardous industrial waste in Kadamjai
The Kadamjai antimony plant in southern Kyrgyzstan stands close to the Uzbek border and the town of the same name. The plant annually consumes 20 000 tones of ore. Ore waste dumps are exposed to erosion by rain and wind ...
16 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
The “Hole”: a result of special weather conditions over the pole repeated every spring
The Antarctic continent is circled by a strong wind in the stratosphere which flows around Antarctica and isolates air over Antarctica from air in the midlatitudes. The region poleward of this jet stream is called the An...
29 Nov 2007 - by Emmanuelle Bournay, UNEP/GRID-Arendal
Ozone hole size 1980–2006
The extent of ozone depletion for any given period depends on complex interaction between chemical and climatic factors such as temperature and wind. The unusually high levels of depletion in 1988, 1993 and 2002 were due...
01 Oct 2007 - by Emmanuelle Bournay, UNEP/GRID-Arendal
Natural resource - solar power (potential)
More than two billion people cannot access affordable energy services today. They depend on inefficient locally collected and often unprocessed biomass-based fuels, such as crop residues, wood, and animal dung. Because c...
12 May 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Reforestation, town of Galma and surroundings, Niger 1975 and 2003
In 1970s and 1980s - years of environmental crisis, there were few trees remaining in Niger. Wind-blown sands razed farmers' young crops and they often had to plant crops three times to succeed. Since the middle of the 1...
01 Oct 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
The Arctic Ocean
The Arctic Ocean experiences much less exchange with the atmosphere than other oceans; momentum exchange (wind drag), heat exchange and freshwater exchange are limited due to the sea ice cover.
01 Oct 2009 - by Laura Margueritte
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