scholarly journals Anthropocene: To Be or not to be?

Author(s):  
José Gomes dos Santos

The growing interest related to the proposal of formal definition of a new geological period that has being called “Anthropocene” has introduced a buzzing dynamics in the scientific community, but its conduct is perhaps due to various interests involved in a discussion that has long surpassed the contours of the so-called “Geosciences”. Themes such as “Climate Change or Drift”, “Global Warming”, “Massive Extinction of Species” and “Loss of bio and geodiversity”, among others, are the wheel of a geomorphogenetic dynamics of anthropocentric origin, which leads the debate. But are the conditions for the formal establishment of a new morphosedimentary cycle following the Meghalayanian (Upper Holocene) Age? This work pursues a line of thought that seeks to answer these and other questions, based on the official position of the institutes that have the scientific competence for the formalization under consideration, and the formal criteria that should be considered for this purpose.

Author(s):  
Carlo Ciulla

This chapter reviews the extensive and comprehensive literature on B-Splines. In the forthcoming text emphasis is given to hierarchy and formal definition of polynomial interpolation with specific focus to the subclass of functions that are called B-Splines. Also, the literature is reviewed with emphasis on methodologies and applications of B-Splines within a wide array of scientific disciplines. The review is conducted with the intent to inform the reader and also to acknowledge the merit of the scientific community for the great effort devoted to B-Splines. The chapter concludes emphasizing on the proposition that the unifying theory presented throughout this book has for what concerns two specific cases of B-Spline functions: univariate quadratic and cubic models.


AJIL Unbound ◽  
2020 ◽  
Vol 114 ◽  
pp. 45-50
Author(s):  
Shibani Ghosh

Jacqueline Peel and Jolene Lin's informative assessment of climate litigation in the Global South is a vital and timely contribution to the growing literature on the issue. It relies on a definition of climate litigation that allows the authors to draw on a much larger set of cases from the Global South by including cases in which climate concerns are “at the periphery.” This essay examines climate litigation in India. Although the term “global warming” started appearing in Indian environmental judgments in the 1990s, climate litigation in India is of relatively recent provenance, and with a few exceptions, climate concerns are peripheral to other, more mainstream environmental issues. Peel and Lin analyze five Indian cases as part of their Global South docket; I expand this set by including fourteen more cases that I believe fit their article's chosen definitional ambit. I classify these cases into four categories based on the use of climate language—reference to climate change, greenhouse gas (GHG) emissions, or the international negotiations—in the courts’ judgment. Drawing from case law analysis and Indian environmental litigation, I make observations about what we can interpret from the current set of climate cases, and I predict that while conditions are favorable for climate litigation in India to grow, in the near future climate claims are likely to remain peripheral issues.


Author(s):  
Lee Wilkins

This chapter reviews media coverage of El Niño 97-98 and identifies some significant trends within that coverage. The coverage analyzed includes that provided by the major American television networks, the elite press, and significant regional newspapers. During the early months of the study period, news coverage of El Niño was focused on the science of the prediction and was framed as an issue of risk with appropriate uncertainty. However, as the predictions themselves were borne out in real-world phenomena, coverage of El Niño became event driven, and the phenomenon itself was treated as certainty. The risks of climate change attributed to El Niño outweighed the potential benefits in many media reports. Coverage of El Niño was extensive, particularly on the West Coast of the United States, where many individual weather events were connected with the larger phenomenon. The chapter then explores the possibility that the totality of the media coverage may have two lasting impacts. First, on the basis of existing scholarship on mass communication and risk communication, it is reasonable to suggest that the extensive news coverage of El Niño may have had some influence on public perception of climate change, particularly the salience of climate change in discrete regions of the nation. Second, the chapter suggests that the mediated reality of the 1997-1998 event will serve as a signal event for popular and political understanding of the consequences of global warming. Historically, journalism has been both hampered and helped by its definition of news. Previous studies of media coverage of a variety of “risky” events have noted that news accounts tend to be event focused, lack context, and treat science as a matter of dueling opinions, rather than a process of knowledge acquisition. These scholarly findings, which are long-standing, have had some impact on the professional community, particularly among science writers, who over the past two decades have become both better trained in science and more aware of the limitations of the concept of “news”—at least when it comes to reporting certain sorts of events. Media coverage of El Niño , in general, reflected these previously documented trends.


2017 ◽  
Author(s):  
Michael F. Wehner ◽  
Kevin A. Reed ◽  
Burlen Loring ◽  
Dáithí Stone ◽  
Harinarayan Krishnan

Abstract. The United Nations Framework Convention on Climate Change (UNFCCC) invited the scientific community to explore the impacts of a world where anthropogenic global warming is stabilized at only 1.5 °C above preindustrial average temperatures. We present a projection of future tropical cyclone statistics for both 1.5 °C and 2.0 °C stabilized warming scenarios by direct numerical simulation using a high resolution global climate model. As in similar projections at higher warming levels, we find that even at these low warming levels the most intense tropical cyclones becomes more frequent and more intense, while simultaneously the frequency of weaker tropical storms is decreased. We also conclude that in the 1.5 °C stabilization, the effect of aerosol forcing changes complicates the interpretation of greenhouse gas forcing changes.


Author(s):  
Filippo Giorgi

This contribution presents the various pieces of evidence which bring the scientific community to conclude that global warming is happening and it is mostly due to anthropogenic emissions of greenhouse gases, mainly carbon dioxide and methane, deriving from the use of fossil fuels and some intensive agricultural practices. The main climatic changes associated with global warming are then discussed, along with the main model-derived future climate scenarios and the impacts that climate change can have on different socioeconomic sectors. Finally, the response policies to global warming are described, and in particular the concepts of adaptation and mitigaziotn (reduction of greenhouse gas emissions).


2021 ◽  
pp. 12-25
Author(s):  
Mark Maslin

‘History of climate change’ traces the history of climate change and the evidence that supports it. The science of climate change started in 1856 with experiments by Eunice Newton Foote demonstrating the greenhouse effect of carbon dioxide. The essential science of climate change was there in the late 1950s, but it was not taken seriously until the late 1980s. Why was there a delay between the science of global warming being accepted in the late 1950s and the realization by those outside the scientific community of the true threat of global warming at the beginning of the 21st century? The key reasons for this delay were the lack of increase in global temperatures and the lack of global environmental awareness. What is the importance of the rise of the global environmental social movement and the new wave of protest and optimism of the last few years?


2018 ◽  
Vol 9 (1) ◽  
pp. 187-195 ◽  
Author(s):  
Michael F. Wehner ◽  
Kevin A. Reed ◽  
Burlen Loring ◽  
Dáithí Stone ◽  
Harinarayan Krishnan

Abstract. The United Nations Framework Convention on Climate Change (UNFCCC) invited the scientific community to explore the impacts of a world in which anthropogenic global warming is stabilized at only 1.5 °C above preindustrial average temperatures. We present a projection of future tropical cyclone statistics for both 1.5 and 2.0 °C stabilized warming scenarios with direct numerical simulation using a high-resolution global climate model. As in similar projections at higher warming levels, we find that even at these low warming levels the most intense tropical cyclones become more frequent and more intense, while simultaneously the frequency of weaker tropical storms is decreased. We also conclude that in the 1.5 °C stabilization, the effect of aerosol forcing changes complicates the interpretation of greenhouse gas forcing changes.


Abstract Warmer and shorter winters from climate change will reduce snowpacks in most seasonally snow-covered regions of the world, with consequences for freshwater availability in spring and summer when people and ecosystems demand water most. Recent record low snowpacks, such as those in the winters of 2013/14 and 2014/15 in the Western United States, have led to a surge in research on ‘snow droughts,’ which are pointed to as harbingers of global warming that pose significant societal hazards. Yet despite the importance of understanding snow droughts to best prepare for their attendant impacts, the concept remains amorphous, with no agreed-upon definition of what they are, how best to measure them, and how such snow droughts connect to warm-season impacts. These knowledge gaps limit our understanding of the risks posed by snow droughts in the present and future, and thus our preparedness for their differential impacts on freshwater resources. To address these issues, we compile a hemispheric ensemble of in situ, satellite, and reanalysis snowpack datasets. We use this ensemble to evaluate the scientific challenges and uncertainties arising from differences in defining and measuring snow droughts, and identify opportunities to leverage this information to better understand the significance of snow droughts. We show that a clearer quantification of what constitutes a snow drought, including its uncertainties, improves our ability to anticipate costly and disruptive warm-season droughts, which is vital for informing risk management and adaptation to changing snow regimes.


2022 ◽  
Author(s):  
Gilmar Veriato Fluzer Santos ◽  
Lucas Gamalel Cordeiro ◽  
Claudio Antonio Rojo ◽  
Edison Luiz Leismann

Abstract Global warming has divided the scientific community worldwide with predominance for anthropogenic alarmism. This article aims to project a climate change scenario using a stochastic model of paleotemperature time series and compare it with the dominant thesis. The ARIMA model – an integrated autoregressive process of moving averages, known as Box-Jenkins - was used for this purpose. The results showed that the estimates of the model parameters were below 1°C for a scenario of 100 years which suggests a period of temperature reduction and a probable cooling, contrary to the prediction of the IPCC and the anthropogenic current of an increase in 1.50° C to 2.0° C by the end of this century. Thus, we hope with this study to contribute to the discussion by adding a statistical element of paleoclimate in counterpoint to the current consensus and to placing the debate in a long-term historical dimension, in line with other research present in climate sciences and statistics.


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