scholarly journals Tree Rings Record 19th-Century Anthropogenic Climate Change

Eos ◽  
2019 ◽  
Vol 100 ◽  
Author(s):  
Mary Morton

Paleoclimate records, observational data, and climate modeling capture the influence of human activity on temperature seasonality.

2020 ◽  
Vol 46 (10) ◽  
pp. 1167-1181 ◽  
Author(s):  
Maeve Cooke

The most fundamental challenge facing humans today is the imminent destruction of the life-generating and life-sustaining ecosystems that constitute the planet Earth. There is considerable evidence that the strongest contemporary ecological threat is anthropogenic climate change resulting from the increasing warming of the atmosphere, caused by cumulative CO2 and other emissions as a result of collective human activity over the past few 100 years. This process of climate change is reinforced by further ecological problems such as pollution of land, air and sea, depletion of resources, land degradation and the loss of biodiversity. The name gaining currency for this emerging epoch of instability in the Earth’s eco-systems is the Anthropocene. Anthropogenic climate change calls for a categorical shift in thinking about the place of humanity in these systems and requires fundamental rethinking of ethics and politics. What would an appropriate ethical frame for politics in the Anthropocene look like? In response to this question, I sketch a proposal for an ethically non-anthropocentric ethics. I draw on early Frankfurt School Critical Theorists, and on Habermas, but move beyond these theorists in key respects.


2016 ◽  
Vol 66 (1) ◽  
pp. 2
Author(s):  
Scott B. Power ◽  
Jeff Callaghan

Millions of Australians live in a 1500 km stretch of coastal catchments in south-east Australia. Major flooding in this region causes death, economic loss and major disruptions to the lives of its inhabitants. Concerns have been raised that anthropogenic climate change might lead, or has already led, to an increased risk of extreme rainfall and associated flooding. Images of flooding commonly appear in the media, fuelling perceptions that flood frequency has already in-creased. Here we use a new dataset that allows us to estimate reliable trends over much longer periods than has previously been the case. The statistical significance of the trends is assessed using a method that is suitable for the non-Gaussian, serially correlated flood frequency data. We identify a statistically significant, increasing trend in the frequency of major floods since the late 19th century, which contributes to a 50% increase in frequency. While possible reasons for the increase are discussed (e.g. land use change, anthropogenic climate change, natural climate variability), further research is needed to clarify the relative importance of possible contributors.


2019 ◽  
Vol 28 (7) ◽  
pp. 778-796 ◽  
Author(s):  
Raquel Bertoldo ◽  
Claire Mays ◽  
Gisela Böhm ◽  
Wouter Poortinga ◽  
Marc Poumadère ◽  
...  

Scientists overwhelmingly agree that climate change exists and is caused by human activity. It has been argued that communicating the consensus can counter climate scepticism, given that perceived scientific consensus is a major factor predicting public belief that climate change is anthropogenic. However, individuals may hold different models of science, potentially affecting their interpretation of scientific consensus. Using representative surveys in the United Kingdom, France, Germany and Norway, we assessed whether the relationship between perceived scientific consensus and belief in anthropogenic climate change is conditioned by a person’s viewing science as ‘the search for truth’ or as ‘debate’. Results show that perceived scientific consensus is higher among climate change believers and moreover, significantly predicts belief in anthropogenic climate change. This relationship is stronger among people holding a model of science as the ‘search for truth’. These results help to disentangle the effect of implicit epistemological assumptions underlying the public understanding of the climate change debate.


2021 ◽  
Author(s):  
R. Saravanan

Climate predictions - and the computer models behind them - play a key role in shaping public opinion and our response to the climate crisis. Some people interpret these predictions as 'prophecies of doom' and some others dismiss them as mere speculation, but the vast majority are only vaguely aware of the science behind them. This book gives a balanced view of the strengths and limitations of climate modeling. It covers historical developments, current challenges, and future trends in the field. The accessible discussion of climate modeling only requires a basic knowledge of science. Uncertainties in climate predictions and their implications for assessing climate risk are analyzed, as are the computational challenges faced by future models. The book concludes by highlighting the dangers of climate 'doomism', while also making clear the value of predictive models, and the severe and very real risks posed by anthropogenic climate change.


World on Fire ◽  
2021 ◽  
pp. 41-64
Author(s):  
Mark Rowlands

This chapter examines the reasons for thinking that anthropogenic climate change—planetary-level warming caused by human activity—is real. The science underlying the idea of anthropogenic global warming is explained. Several different forms of skepticism about climate change are explained and ultimately found to be lacking. The idea of a tipping cascade, and the consequent possibility of runaway warming, is explained. The ability to predict the ultimate severity of global warming relies on knowledge that we do not yet possess. Nevertheless, it is argued that, even if we adopt relatively conservative assumptions, it is very likely that global warming is going to have grave consequences, both for humans and for the rest of the natural world.


2020 ◽  
Author(s):  
Alistair Soutter ◽  
René Mõttus

Although the scientific evidence of anthropogenic climate change continues to grow, public discourse still reflects a high level of scepticism and political polarisation towards anthropogenic climate change. In this study (N = 499) we attempted to replicate and expand upon an earlier finding that environmental terminology (“climate change” versus “global warming”) could partly explain political polarisation in environmental scepticism (Schuldt, Konrath, & Schwarz, 2011). Participants completed a series of online questionnaires assessing personality traits, political preferences, belief in environmental phenomenon, and various pro-environmental attitudes and behaviours. Those with a Conservative political orientation and/or party voting believed less in both climate change and global warming compared to those with a Liberal orientation and/or party voting. Furthermore, there was an interaction between continuously measured political orientation, but not party voting, and question wording on beliefs in environmental phenomena. Personality traits did not confound these effects. Furthermore, continuously measured political orientation was associated with pro-environmental attitudes, after controlling for personality traits, age, gender, area lived in, income, and education. The personality domains of Openness, and Conscientiousness, were consistently associated with pro-environmental attitudes and behaviours, whereas Agreeableness was associated with pro-environmental attitudes but not with behaviours. This study highlights the importance of examining personality traits and political preferences together and suggests ways in which policy interventions can best be optimised to account for these individual differences.


Author(s):  
Lonnie G. Thompson ◽  
Alan L. Kolata

Climate is a fundamental and independent variable of human existence. Given that 50 percent of the Earth’s surface and much of its population exist between 30oN and 30oS, paleoenvironmental research in the Earth’s tropical regions is vital to our understanding of the world’s current and past climate change. Most of the solar energy that drives the climate system is absorbed in these regions. Paleoclimate records reveal that tropical processes, such as variations in the El Niño-Southern Oscillation (ENSO), have affected the climate over much of the planet. Climatic variations, particularly in precipitation and temperature, play a critical role in the adaptations of agrarian cultures located in zones of environmental sensitivity, such as those of the coastal deserts, highlands, and altiplano of the Andean region. Paleoclimate records from the Quelccaya ice cap (5670 masl) in highland Peru that extend back ~1800 years show good correlation between precipitation and the rise and fall of pre-Hispanic civilizations in western Peru and Bolivia. Sediment cores extracted from Lake Titicaca provide independent evidence of this correspondence with particular reference to the history of the pre-Hispanic Tiwanaku state centered in the Andean altiplano. Here we explore, in particular, the impacts of climate change on the development and ultimate dissolution of this altiplano state.


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