HomeAboutActivitiesMapsPhotosPublicationsNews
 
Home >> Recent

Recent

Fifty million climate refugees by 2010 Fifty million climate refugees by 2010
Today we find a world of asymmetric development, unsustainable natural resource use, and continued rural and urban poverty. There is general agreement about the current global environmental and development crisis. It is also known that the consequences of these global changes have the most devastating impacts on the poorest, who historically have had limited entitlements and opportunities for growth.
03 Jan 2008 - by Emmanuelle Bournay
3
Measures of Poverty: Hunger Density Measures of Poverty: Hunger Density
Population Density of Children Age 0-5 Underweight (per square kilometer). Children are defined as underweight if their weight-for-age z-scores are more than two standard deviations (2 SD) below the median of the NCHS/CDC/WHO International Reference Population.
03 Jan 2008 - by The Trustees of Columbia University in the City of New York
3
Measures of Poverty: Child Malnutrition - Latin America Measures of Poverty: Child Malnutrition - Latin America
Children are defined as underweight if their weight-for-age z-scores are more than two standard deviations (2 SD) below the median of the NCHS/CDC/WHO International Reference Population. There are serious problems of child malnutrition in Latin America but not as persistent as in Asia.
03 Jan 2008 - by Copyright 2005. The Trustees of Columbia University in the City of New York
3
Key relationships between future challenges and agricultural knowledge, science and technology (AKST) options for action Key relationships between future challenges and agricultural knowledge, science and technology (AKST) options for action
The general model has been to continuously innovate, reduce farm gate prices and externalize costs. This model drove the phenomenal achievements of AKST in industrial countries after WWII and the spread of the Green Revolution beginning in the 1960s. But, given the new challenges we confront today, there is increasing recognition within formal S&T organizations that the current AKST model requires revision.
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
4
Measures of Poverty: Child Malnutrition - Asia Measures of Poverty: Child Malnutrition - Asia
Children are defined as underweight if their weight-for-age z-scores are more than two standard deviations (2 SD) below the median of the NCHS/CDC/WHO International Reference Population. There is a high incidence of of malnutrition in Asia.
03 Jan 2008 - by The Trustees of Columbia University in the City of New York
3
Global soil degradation Global soil degradation
In many parts of the world natural resources have been treated as though unlimited, and totally resilient to human exploitation. This perception has exacerbated the conflicting agricultural demands on natural capital, as have other exploitative commercial enterprises. Both have affected local cultures and had undesirable long-term impacts on the sustainability of resources. The consequences include: land degradation (about 2,000 million ha of lan...
03 Jan 2008 - by Philippe Rekacewicz, UNEP/GRID-Arendal
4
The percentage of agricultural work carried out by women compared with the percentage of female extension staff in selected African countries The percentage of agricultural work carried out by women compared with the percentage of female extension staff in selected African countries
Only 15% of the world’s agricultural public sector extension agents are women [Global 3]. Women's access to extension is limited by lack of access to membership in rural organizations which often channel or provide training opportunities, and by gender blind agricultural policies that give inadequate attention to women farmer's needs in terms of crops and technology.
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
4
Global trends in cereal and meat production; total use of nitrogen and phosphorus fertilizers; increased use of irrigation; total global pesticides production Global trends in cereal and meat production; total use of nitrogen and phosphorus fertilizers; increased use of irrigation; total global pesticides production
Production gains are attributed to improved crop varieties and livestock, soil management, improved access to resources (nutrients and water), infrastructure developments, policy initiatives, microfinance, education, better communication and advances in market and trade systems. This has also increased the demand and use of irrigation, phosphorus and nitrogen.
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
5
Global Ocean Acidification Global Ocean Acidification
As carbon concentrations in the atmosphere increase, so do concentrations in the ocean, with resultant acidification as a natural chemical process.
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
3
Larimichthys polyactis Catch in early 2000s and predicted Catch Shift Larimichthys polyactis Catch in early 2000s and predicted Catch Shift
(a) Current (early 2000s) and (b) climate-shifted distributions of the small yellow croaker Larimichthys polyactis (Sciaenidae). The climate-shifted distribution was predicted by a dynamic bioclimate envelope model described by Cheung et al. (2008), under a hypothetical increase in average global ocean temperature of 2.5°C. Boundaries of Exclusive Economic Zones are delineated by the dashed lines.
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
4
Seagrass Seagrass
Distribution of the world's blue carbon sinks (seagrasses).
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
3
Natural ecosystem conversion Natural ecosystem conversion
It is clear that much land needs to be kept for agricultural use but it is also possible that the area required for food production will stabilize in the future.
03 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
4
Human use and conversion of tropical forests Human use and conversion of tropical forests
Tropical forests hold the largest terrestrial carbon store and are active carbon sinks. Reducing emissions from deforestation and degradation is a vital component of tackling dangerous climate change. In addition, tackling illegal and ill-managed logging will be an important part of reducing emissions from forestry.
27 May 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
4
Jakobshavn Isbrae and ice fjord, showing locations of the calving ice front in years from 1851 to 2006, together with flow velocity observations Jakobshavn Isbrae and ice fjord, showing locations of the calving ice front in years from 1851 to 2006, together with flow velocity observations
The glacier extends through the Illulisat Icefjord, surrounded by mountains. Icebergs calve off from the main glacier, pile up and block the fjord before being released into Qeqertarsuup Tunua (Disko) Bay and Davis Strait. The whiter areas in the fjord are piledup icebergs and the “real” glacier ends where the greyish striped section ends – showing that this image is from 2001. The graph shows glacier-velocity profiles for 1985 to 2006. During th...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
4
Maps of average sea ice extent in the Arctic summer (September) and winter (March), and in the Antarctic summer (February) and winter (September) Maps of average sea ice extent in the Arctic summer (September) and winter (March), and in the Antarctic summer (February) and winter (September)
Passive microwave sensors on satellites have monitored the extent of the sea ice cover since 19782. This technique is widely used to investigate fluctuations in ice extent over the seasons, variability between years, and longterm trends. The seasonal variation of ice extent is much greater in the Antarctic where there is about six times as much ice in winter as in summer. Currently, in the Arctic, ice approximately doubles from summer to winter. ...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
3
Estimates of people flooded in coastal areas in the 2080s as a result of sea-level rise and for given socio-economic scenarios and protection responses Estimates of people flooded in coastal areas in the 2080s as a result of sea-level rise and for given socio-economic scenarios and protection responses
The lines represent IPCC Special Report on Emissions Scenarios (SRES) based on different world views. The differences in impacts between the SRES scenarios for the same amount of sea-level rise and protection response reflect differences in exposure (population) and ability to adapt (wealth). The solid lines represent a level of 'constant' (no additional) protection response. The dashed and dotted lines represent the addition of protection respon...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
3
Climate feedbacks - the connectivity of the positive ice/snow albedo feedback, terrestrial snow and vegetation feedbacks and the negative cloud/radiation feedback Climate feedbacks - the connectivity of the positive ice/snow albedo feedback, terrestrial snow and vegetation feedbacks and the negative cloud/radiation feedback
Feedback refers to the modification of a process by changes resulting from the process itself. Positive feedbacks accelerate the process, while negative feedbacks slow it down. Part of the uncertainty around future climates relates to important feedbacks between different parts of the climate system: air temperatures, ice and snow albedo (reflection of the sun’s rays), and clouds. An important positive feedback is the ice and snow albedo feedback...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
3
Ratio of wastewater treatment Ratio of wastewater treatment
The ratio of treated to untreated wastewater reaching water bodies for 10 regions. An estimated 90 per cent of all wastewa- ter in developing countries is discharged untreated directly into rivers, lakes or the oceans (UN Water, 2008).
01 Mar 2010 - by UNEP/GRID-Arendal, Hugo Ahlenius
4
Keylinks Keylinks
04 Oct 2007 - by
3