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The Role of Climate Change in the Egyptian Revolution
The Role of Climate Change in the Egyptian Revolution

... one that can be disregarded as a future issue, one that the inhabitants of this Earth do not have to worry about. The impacts of climate change are wide-ranging and are unfortunately deadly. Today’s atmospheric carbon dioxide levels are 405.2 parts per million, which is the highest that CO2 levels h ...
UK Legislation RTFO (1)
UK Legislation RTFO (1)

... Agriculture/Land Use already 30-40% of global GHGs • Deforestation, agriculture and peat Emission Trickery From Stern ...
curriculum vitae - u.arizona.edu
curriculum vitae - u.arizona.edu

... [40] Cook, E.R., P.J. Krusic, K.J. Anchukaitis, B.M. Buckley, T. Nakatsuka, M. Sano and the PAGES Asia2k members, Tree-ring reconstructed summer temperature anomalies for temperate East Asia since 800 C.E., Climate Dynamics, 41(11), 2957–2972, doi: 10.1007/s00382-012-1611-x, 2013. [39] Ummenhofer, C ...
It`s a Matter of Trust: American Judgments of the
It`s a Matter of Trust: American Judgments of the

... those lines, Maibach et al. (2008) have specifically called for research to identify opinion leaders in social networks, because of these individuals’ superior ability to affect change from within. In the following sections, we develop the theoretical underpinnings of the assertion that informal clim ...
IISD REPORT - The Hudson Bay Consortium
IISD REPORT - The Hudson Bay Consortium

... well as interannual differences in air and sea temperatures and in the nature, extent and duration of the sea ice cover are commonplace. Periodic interdecadal warming and cooling periods occur and are also features of this unique ecosystem. What are, however, unprecedented are the speed, magnitude a ...
Bolivia: Climate change, poverty and adaptation
Bolivia: Climate change, poverty and adaptation

... ● Bio-diversity: Bolivia is one of the most bio-diverse countries in the world. It covers a huge area of more than one million square kilometres (roughly the size of France, Germany and the UK combined) across a great variety of eco-systems including Andean mountains, the Chaco desert, humid and ari ...
ECOsCIENCE
ECOsCIENCE

A vulnerability driven approach to identify adverse climate and land
A vulnerability driven approach to identify adverse climate and land

... These bottom-up approaches are sometimes also termed decision scaling or context-first approaches. They can be used in a wide variety of problems and have proved very useful for decision making when projections of the future are highly uncertain [Moody and Brown, 2013; Kunreuther et al., 2013]. Lempe ...
Oceanic forcing of the late 20 century Sahel drought
Oceanic forcing of the late 20 century Sahel drought

... changes. We first assess the validity of using the five month experiments, forced with SST anomalies corresponding to the low frequency trend in the Sahel rainfall. This is first shown by comparing Figs 3a and 3b. The GLOBAL_MS experiment simulates a precipitation signal which agrees well with the i ...
1 - WordPress.com
1 - WordPress.com

... deforestation or foment reforestation resulting in sequestered GHGs above a “business as usual” (BAU) baseline.21 Tropical deforestation accounts for about 15-20% of GHG emissions, a greater contribution than all forms of transport combined, and equal to the annual emissions of China or the United S ...
LOUISIANA AND THE SURGING SEA
LOUISIANA AND THE SURGING SEA

... Global Sea Level Rise Projections The Earth’s average temperature has warmed by more than one degree Fahrenheit over the last century, and scientists overwhelmingly agree that most or all of this warming comes from human influence (IPCC 2013). This influence comes mainly through the burning of fossi ...
Potential Threats from Climate Change to Human
Potential Threats from Climate Change to Human

... people, who are dependent on the biological resources. Realising the importance of mountains as ecosystems of crucial significance, the Convention on Biological Diversity specifically developed a Programme of Work on Mountain Biodiversity in 2004 aimed at reducing the loss of mountain biological div ...
“Venues for Contestation ” within the United Nations Framework
“Venues for Contestation ” within the United Nations Framework

... The UNFCCC has near universal ratification25 the objective of which is to achieve, in accordance with the relevant provisions of the Convention, stabilisation of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system ...
4.2. Physics enriched by the climate change
4.2. Physics enriched by the climate change

... in fewer cases and with higher intensity. Besides this inconvenient dosage of precipitation, positive temperature trends also intensify the problem. Heat waves. The mean summer temperature was 19.6 degrees Celsius in the 1961-1990 normal period. Since its end, however, both the average and the devia ...
Town of Minetto GHG Inventory Report(Word format)
Town of Minetto GHG Inventory Report(Word format)

... Many local governments have decided to gain a detailed understanding of how their emissions and their community’s emissions are related to climate change and have committed to reducing GHG emissions at the local level. Local governments exercise direct control over their own operations and can lead ...
THERMAL METROLOGY FOR METEOROLOGY AND
THERMAL METROLOGY FOR METEOROLOGY AND

... A wide measurement range with a factor of more than 10 000 from tropical conditions at sea level to upper air below -80 °C and 1 kPa sets a challenge for the reliability of the measurements, in the extensive meteorological sensor networks and for long time series . Calibration procedures must guaran ...
On the Relative Humidity of the Atmosphere
On the Relative Humidity of the Atmosphere

... If free tropospheric water vapor increases with temperature, the additional greenhouse effect reduces OLR compared to what it would be with water vapor fixed, whence the water vapor feedback factor β is positive, and climate sensitivity is increased. General circulation model simulations of the chan ...
Does climate adaptation policy need probabilities?
Does climate adaptation policy need probabilities?

... There has been a growing discussion amongst climate change researchers, crosscutting all three Working Groups of the Intergovernmental Panel on Climate Change (IPCC), about whether the likelihood of quantified amounts of climate change throughout the coming century can be estimated. This lively deba ...
Examining climate-biome - Wildlife Conservation Society Canada
Examining climate-biome - Wildlife Conservation Society Canada

... Fig. 2 illustrates the relative distances (i.e., differences) in climate conditions between all possible pairings of cluster medoids, standardized to a range between zero and one. If the underlying assumption of the analysis holds, these differences in climate conditions provide a meaningful estimat ...
Assessing Effects of Variation in Global Climate Data Sets on Spatial
Assessing Effects of Variation in Global Climate Data Sets on Spatial

... and Lobo 2008) for model development. Although the use of 10,000 pseudo-absences is somewhat arbitrary, many studies use this number of points for model training (e.g., Guisan et al. 2007; Phillips et al. 2009; VanDerWal et al. 2009). For all models, 75% of the presence data were used for model trai ...
The Hydrological Cycle of the Mediterranean
The Hydrological Cycle of the Mediterranean

... with decadal variations of the North Atlantic Oscillation (Hurrell 1995; Mariotti et al. 2002). Long-term salinity increase has also been connected to a reduction in river discharge (e.g. damming of the Nile River in the 1960s) and Black Sea fresh water inputs (Rohling and Bryden 1992; Skliris et al ...
Risks of Climate Change with Respect to the Singapore
Risks of Climate Change with Respect to the Singapore

... Abstract: Warming of the climate system is unequivocal, and many of the observed changes are unprecedented over the past five decades. Globally, the atmosphere and the ocean are becoming increasingly warmer, the amount of ice on the earth is decreasing over the oceans, and the sea level has risen. A ...
Tundra Vegetation Change near Barrow, Alaska
Tundra Vegetation Change near Barrow, Alaska

... and serves as an important control of plant community structure and diversity (Webber 1978). Interannual variability in climate and herbivory can also affect plant productivity and reproduction (Chapin et al 1987, Walker et al 1995, Johnson et al 2011). In particular, lemmings can remove or destroy ...
View/Open
View/Open

... (UNPD, 2007). In addition, the demand for livestock products is rising globally and will increase significantly in the coming decades (Delgado et al., 1999) because of income shifts, population growth, urbanization and changes in dietary preferences. While the increased demand will probably be met m ...
The 1430s: a cold period of extraordinary internal climate variability
The 1430s: a cold period of extraordinary internal climate variability

... 2013; Bauch, 2016). These cold summers across Europe persisted for one or two decades and were followed by rather warm summers until the 1530s, particularly in the Alps. Similar decadal-long cold summer spells were observed between 1590 and 1610, which also coincided with two very large volcanic eru ...
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Climate change feedback



Climate change feedback is important in the understanding of global warming because feedback processes may amplify or diminish the effect of each climate forcing, and so play an important part in determining the climate sensitivity and future climate state. Feedback in general is the process in which changing one quantity changes a second quantity, and the change in the second quantity in turn changes the first. Positive feedback amplifies the change in the first quantity while negative feedback reduces it.The term ""forcing"" means a change which may ""push"" the climate system in the direction of warming or cooling. An example of a climate forcing is increased atmospheric concentrations of greenhouse gases. By definition, forcings are external to the climate system while feedbacks are internal; in essence, feedbacks represent the internal processes of the system. Some feedbacks may act in relative isolation to the rest of the climate system; others may be tightly coupled; hence it may be difficult to tell just how much a particular process contributes. Forcings, feedbacks and the dynamics of the climate system determine how much and how fast the climate changes. The main positive feedback in global warming is the tendency of warming to increase the amount of water vapor in the atmosphere, which in turn leads to further warming. The main negative feedback comes from the Stefan–Boltzmann law, the amount of heat radiated from the Earth into space changes with the fourth power of the temperature of Earth's surface and atmosphere.Some observed and potential effects of global warming are positive feedbacks, which contribute directly to further global warming. The Intergovernmental Panel on Climate Change's (IPCC) Fourth Assessment Report states that ""Anthropogenic warming could lead to some effects that are abrupt or irreversible, depending upon the rate and magnitude of the climate change.""
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