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Climate Change in the Sydney Metropolitan Catchments
Climate Change in the Sydney Metropolitan Catchments

... Changes in rainfall and higher evaporation rates are likely to lead to less water for streams and rivers in the Sydney Metropolitan Catchments, which will have downstream consequences for storages and place strains on the catchment’s water resources. For example, due to recent trends toward reduced ...
Ruti et al. BAMS - Med
Ruti et al. BAMS - Med

... term ocean water mass formation and variability can influence the atmospheric water input (the relevance of this process has been highlighted for surrounding areas such as Sahel, see Fontaine et al., 2010). Here we propose two examples of how present Regional Climate Models reproduce surface paramet ...
CASE STUDY Combining Local Radio and Mobile Phones to
CASE STUDY Combining Local Radio and Mobile Phones to

... communities, where poverty is high and infrastructure is largely inadequate, simple technologies like  radio and basic mobile phones are incredibly effective channels for distributing and interacting with  stakeholder communities. This case study focuses on our pilot project, which aimed to bring ef ...
COUNTRY REPORT: TURKEY Turkey`s Climate Change Dilemma
COUNTRY REPORT: TURKEY Turkey`s Climate Change Dilemma

... case-by-case basis.37 The case-by-case approach has caused much controversy over the last decade, particularly with regards to hydroelectric power plants. This is because the Regulation does not automatically require an EIA for hydroelectric power plants with less than 25 megawatt capacity.38 Furthe ...
Folie 1
Folie 1

... emissions for everyone. Instead of taxing the governments which would lead to further debt explosions and demand shocks, shall we tax the individuals? Each relevant output/product including transport and distribution should be CO2 taxed. Governments can make their decisions of climate regulations wi ...
5 global warming
5 global warming

... Write a list of things that YOU could do to stop global warming by answering the questions below; • What could you do today (something different from yesterday) to help to stop global warming? • What could you do this month and • What could you do in twenty years time? Assemble your ideas into a lis ...
5 global warming
5 global warming

... Write a list of things that YOU could do to stop global warming by answering the questions below;  What could you do today (something different from yesterday) to help to stop global warming?  What could you do this month and  What could you do in twenty years time? Assemble your ideas into a lis ...
Carbon Sequestration via Wood Burial
Carbon Sequestration via Wood Burial

... 2C. SST and dynamical mechanisms Our analysis has singled out the importance of dry season precipitation change. The question naturally arises as to the robustness and mechanisms of such changes. The opposite change during the wet season, suggests that complex factors may be in play. We have identif ...
Corporate ppt template - Global Carbon Project
Corporate ppt template - Global Carbon Project

... – direct effects of CO2 on vegetation – biogeophysical feedbacks (through water cycle) – biogeochemical feedbacks (through carbon cycle) ...
gaynes school scheme of work 9gh
gaynes school scheme of work 9gh

... Describe how human activity can have a direct effect on air quality. (level 5) Hypothesise the ways in which individuals and governments can be encouraged to adopt cleaner options (level 7) Recall from previous lessons, that carbon, like all atoms is not destroyed but recycled (level3) Describe diff ...
Climate Change: Responding to the Crisis Portended by George
Climate Change: Responding to the Crisis Portended by George

... reduced forest cover in the state by more than half, from about 80% to around 30% during the century (Foster 2006). Short-sighted land use and poor land clearing practices caused highly visible erosion and tremendous loss of topsoil from previously forested areas. These same areas, now lacking the ...
Submission from Russian Federation with views on
Submission from Russian Federation with views on

... specifically in the zone of tundra with widespread permafrost. Permafrost occupies about 24% of land (22.8×106 km2) in Northern Hemisphere, including around 63% of the territory of Russia. Arctic soils have been the net sink of the atmospheric carbon during Holocene. According to the up to date acco ...
On Assessing the Relative Roles of Initial and Boundary Conditions
On Assessing the Relative Roles of Initial and Boundary Conditions

... for North Atlantic SSTs nor for NINO3 SSTs. The climate change signal is more likely to emerge on global scales because of the “noise” being reduced relative to the “signal” by spatial averaging (Stott and Tett (1998)). Also land areas are likely to warm at a greater rate than the ocean because of t ...
METO112-hydrology - Department of Meteorology and Climate
METO112-hydrology - Department of Meteorology and Climate

... Figure 3.35. Annual values of the East Asia summer monsoon index derived from MSLP gradients between land and ocean in the East Asia region. The definition of the index is based on Guo et al. (2003) but was recalculated Figure 3.35 based on the HadSLP2 (Allan and Ansell, 2006) data set. The smooth b ...
as a PDF
as a PDF

... representation of the HAmburg Model of the Ocean Carbon Cycle (HAMOCC) (Maier-Reimer, 1993). An impulse-response function model can be used as an exact substitute for its parent 3-dimensional model as long as only the linearized response to small perturbations is required. In the case of the carbon- ...
View/Open
View/Open

... such as UNFCCC, Kyoto Protocol, IPCC, etc. He devotes substantial space for recording the negative impact of climate change on Indian agriculture including floods, more droughts, disease spread, etc. as climate change will have more effect on the northern parts of the country with the exception of P ...
Palaeoclimatic insights into future climate challenges
Palaeoclimatic insights into future climate challenges

... warm and cold climates. Starting with the cold climates, the Hoffert & Covey (1992) ice-age estimate was based on early palaeoclimatic data that rather clearly underestimated changes (specifically, the CLIMAP sea-surface temperatures (SSTs)). As updated by Cuffey & Brook (2000), improved data yield a s ...
INCORPORATING CATASTROPHES INTO INTEGRATED ASSESSMENT: SCIENCE, IMPACTS, AND ADAPTATION
INCORPORATING CATASTROPHES INTO INTEGRATED ASSESSMENT: SCIENCE, IMPACTS, AND ADAPTATION

... within the lattice of frozen water molecules. These materials are known variously as clathrates, methane hydrates, or gas hydrates. It is perhaps the sheer size of this reservoir that has given rise to concerns about a runaway positive feedback loop in which anthropogenic warming destabilizes some o ...
EPA Climate Change Research Programme Projects and Fellowships awarded in 2011
EPA Climate Change Research Programme Projects and Fellowships awarded in 2011

... facilitate reporting on national greenhouse gas emissions related to land use. Hyper-temporal optical time series satellite data will be used to classify land cover and use at a 250-300m resolution, with higher resolution optical and radar data used to enhance and verify the products generated. The ...
UK Marine Climate Change Impacts Partnership
UK Marine Climate Change Impacts Partnership

... around the UK have become warmer. l In the North Sea, the population of the previously dominant and important cold-water zooplankton species Calanus finmarchicus has declined in biomass by 70% since the 1960s. l The seasonal timing of plankton production has altered in response to recent climate c ...
UKCP Paper
UKCP Paper

... Even state-of-the-art computers take a long time to make a run of tC ( x; ) , and so a simpler model is needed for most calculations (a ‘run’ is the calculation of the future value of x given a particular initial condition and a set of parameter values). To this end the entire ocean module is eli ...
Memorandum for His Excellency Judge Shi
Memorandum for His Excellency Judge Shi

... No other offsets permitted at start-up. Decision on offsets deferred until 2013, however offsets could only come from non-covered sectors and where it is not possible to:  cover a particular source of emissions;  cost-effectively mitigate emissions through alternative measures outside of the CPRS. ...
Concept of the Seminar [PPT 1.9MB]
Concept of the Seminar [PPT 1.9MB]

... has highlighted practical aspects of climate change issues, so that policy makers may obtain “hints” for their daily efforts at home. In view of providing useful inputs to participants, the 15th Seminar promotes discussion at a practical level, not limited conceptual ones. ...
Neelin, 2011. Climate Change and Climate Modeling, Cambridge
Neelin, 2011. Climate Change and Climate Modeling, Cambridge

... and thus potentially for climate. The warming effect of the atmosphere and analogy to a greenhouse had been noted by J. B. Fourier in 1827. Stefan’s law for blackbody radiation. Svante Arrhenius postulates a relation between climate change and CO2 and that global warming may occur as a result of coa ...
3rd Quarter 2010 | 25(3) Climate Change, Markets, and Technology
3rd Quarter 2010 | 25(3) Climate Change, Markets, and Technology

... regional rainfall changes are uncertain, the increase in temperature is forecast with much more confidence; temperature change is a strong driving force behind forecast reductions in irrigation water supplies. Even with relatively unchanged average rainfall, changes in the timing of precipitation wi ...
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Attribution of recent climate change



Attribution of recent climate change is the effort to scientifically ascertain mechanisms responsible for recent changes observed in the Earth's climate, commonly known as 'global warming'. The effort has focused on changes observed during the period of instrumental temperature record, when records are most reliable; particularly in the last 50 years, when human activity has grown fastest and observations of the troposphere have become available. The dominant mechanisms (to which recent climate change has been attributed) are anthropogenic, i.e., the result of human activity. They are: increasing atmospheric concentrations of greenhouse gases global changes to land surface, such as deforestation increasing atmospheric concentrations of aerosols.There are also natural mechanisms for variation including climate oscillations, changes in solar activity, and volcanic activity.According to the Intergovernmental Panel on Climate Change (IPCC), it is ""extremely likely"" that human influence was the dominant cause of global warming between 1951 and 2010. The IPCC defines ""extremely likely"" as indicating a probability of 95 to 100%, based on an expert assessment of all the available evidence.Multiple lines of evidence support attribution of recent climate change to human activities: A basic physical understanding of the climate system: greenhouse gas concentrations have increased and their warming properties are well-established. Historical estimates of past climate changes suggest that the recent changes in global surface temperature are unusual. Computer-based climate models are unable to replicate the observed warming unless human greenhouse gas emissions are included. Natural forces alone (such as solar and volcanic activity) cannot explain the observed warming.The IPCC's attribution of recent global warming to human activities is a view shared by most scientists, and is also supported by 196 other scientific organizations worldwide (see also: scientific opinion on climate change).
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