scholarly journals Collaboration in the Rockies Aims to Model Mountain Watersheds Worldwide

Eos ◽  
2021 ◽  
Vol 102 ◽  
Author(s):  
Saima Sidik

As Earth’s climate changes at an unprecedented rate, the Surface Atmosphere Integrated Field Laboratory is studying precipitation on an unprecedented scale.

Genes ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1481
Author(s):  
Francesco Mercati ◽  
Francesco Sunseri

Global warming is negatively impacting on crop yield and Earth’s climate changes can bring possible negative effects on the growth and reproductive success of crops [...]


2011 ◽  
Vol 3 (1) ◽  
pp. 48-60 ◽  
Author(s):  
Rob Bellamy ◽  
Mike Hulme

Abstract This article explores the influence of personal values and ontological beliefs on people’s perceptions of possible abrupt changes in the Earth’s climate system and on their climate change mitigation preferences. The authors focus on four key areas of risk perception: concern about abrupt climate change as distinct to climate change in general, the likelihood of abrupt climate changes, fears of abrupt climate changes, and preferences in how to mitigate abrupt climate changes. Using cultural theory as an interpretative framework, a multimethodological approach was adopted in exploring these areas: 287 respondents at the University of East Anglia (UK) completed a three-part quantitative questionnaire, with 15 returning to participate in qualitative focus groups to discuss the issues raised in more depth. Supporting the predictions of cultural theory, egalitarians’ values and beliefs were consistently associated with heightened perceptions of the risks posed by abrupt climate change. Yet many believed abrupt climate change to be capricious, irrespective of their psychometrically attributed worldviews or “ways of life.” Mitigation preferences—across all ways of life—were consistent with the “hegemonic myth” dominating climate policy, with many advocating conventional regulatory or market-based approaches. Moreover, a strong fatalistic narrative emerged from within abrupt climate change discourses, with frequent referrals to helplessness, societal collapse, and catastrophe.


Author(s):  
L. Voronkov

The author questions the indisputability of the Arctic’s existing climate change assessments and insists on the need to adjust the Arctic strategies of states to different scenarios of such changes. While not denying the impact of human society on the Earth’s climate, the author believes to be important not to limit research on its changes by exclusively natural-scientific aspects, but to include considerations concerning the influence of peculiarities of human society’s development on the climate. He thinks it is important to take into account the combine impact of the changing nature of contemporary industrial activity, of sources for energy supply, the on-going processes of building of “smart” economy and its innovative development, demographic changes, improvement of human capital as well as the impact of increased environmental consciousness of human beings on the global and Arctic climate. Despite the observed climatic changes in the Arctic, it remains ice-covered the major part of the year. Any commercially justified human activities in the Arctic must be based on the need to maintain a year-round exploitation of its resources and possibilities and to create the appropriate infrastructure, machinery and equipment. The author comes to the conclusion that the need to resolve these problems requires considerable financial resources and time.


2020 ◽  
Author(s):  
Sarah S. Eggleston ◽  
Oliver Bothe ◽  
Nerilie Abram ◽  
Bronwen Konecky ◽  
Hans Linderholm ◽  
...  

<p>The past two thousand years is a key interval for climate science because this period encompasses both the era of human-induced global warming and a much longer interval when changes in Earth's climate were governed principally by natural drivers. This earlier 'pre-industrial' period is particularly important for two reasons. Firstly, we now have a growing number of well-dated, climate sensitive proxy data with high temporal resolution that spans the full period. Secondly, the pre-industrial climate provides context for present-day climate change, sets real-world targets against which to evaluate the performance of climate models, and allows us to address other questions of Earth sciences that cannot be answered using only a century and a half of observational data. </p><p>Here, we first provide several perspectives on the concept of a 'pre-industrial climate'. Then, we highlight the activities of the PAGES 2k Network, an international collaborative effort focused on global climate change during the past two thousand years. We highlight those aspects of pre-industrial conditions (including both past climate changes and past climate drivers) that are not yet well constrained, and suggest potential areas for research during this period that would be relevant to the evolution of Earth's future climate.</p>


Cardiology ◽  
2015 ◽  
Vol 131 (4) ◽  
pp. 209-217 ◽  
Author(s):  
Jonathan De Blois ◽  
Tord Kjellstrom ◽  
Stefan Agewall ◽  
Justin A. Ezekowitz ◽  
Paul W. Armstrong ◽  
...  

The earth's climate is changing and increasing ambient heat levels are emerging in large areas of the world. An important cause of this change is the anthropogenic emission of greenhouse gases. Climate changes have a variety of negative effects on health, including cardiac health. People with pre-existing medical conditions such as cardiovascular disease (including heart failure), people carrying out physically demanding work and the elderly are particularly vulnerable. This review evaluates the evidence base for the cardiac health consequences of climate conditions, with particular reference to increasing heat exposure, and it also explores the potential further implications.


2018 ◽  
Vol 31 (14) ◽  
pp. 5507-5524 ◽  
Author(s):  
Alexis Hannart ◽  
Philippe Naveau

Multiple changes in Earth’s climate system have been observed over the past decades. Determining how likely each of these changes is to have been caused by human influence is important for decision making with regard to mitigation and adaptation policy. Here we describe an approach for deriving the probability that anthropogenic forcings have caused a given observed change. The proposed approach is anchored into causal counterfactual theory ( Pearl 2009 ), which was introduced recently, and in fact partly used already, in the context of extreme weather event attribution (EA). We argue that these concepts are also relevant to, and can be straightforwardly extended to, the context of detection and attribution of long-term trends associated with climate change (D&A). For this purpose, and in agreement with the principle of fingerprinting applied in the conventional D&A framework, a trajectory of change is converted into an event occurrence defined by maximizing the causal evidence associated to the forcing under scrutiny. Other key assumptions used in the conventional D&A framework, in particular those related to numerical model error, can also be adapted conveniently to this approach. Our proposal thus allows us to bridge the conventional framework with the standard causal theory, in an attempt to improve the quantification of causal probabilities. An illustration suggests that our approach is prone to yield a significantly higher estimate of the probability that anthropogenic forcings have caused the observed temperature change, thus supporting more assertive causal claims.


2021 ◽  
Author(s):  
Guillermo Nicolás Murray Tortarolo

Earth’s surface temperature oscillated greatly throughout time. From near congelation during “snowball Earth” 2.9Gya to an ice-free world in the Paleocene-Eocene Thermal maximum 55Mya. These changes have been forced by internal (e.g. changes in the chemical composition of the atmosphere) or external (e.g. changes in solar luminosity) drivers that varied through time. Thus, if we understand how the radiation budget evolved in different times, we can closely calculate past global climate; a fundamental comparison to situate current climate change in the context Earth’s history. Here I present an analytical framework employing a simple energy balance derived from the Stephan-Boltzmann law, that allows for quick comparison between drivers of global temperature and at multiple moments in the history of our planet. My results show that current rates of increase in global temperature are at least four times faster than any previous warming event.


2019 ◽  
Vol 23 (Suppl. 5) ◽  
pp. 1435-1455
Author(s):  
Miodrag Mesarovic

Global warming and other climate change phenomena became a worldwide exploited subject over recent decades. World science has made enormous progress in understanding past climate change and its causes, and continues to study current and potential impacts that will affect people in the future. All scientists agree that the Earth's climate is changing due to natural phenomena, and most of them argue that human activities are increasing the greenhouse effect, while some scientists attribute climate changes exclusively to the natural causes. Though there still is, and always will be, need for multiple lines of research on an extremely complex system like Earth's climate is, an immediate consensus is crucial for decision-makers to place climate change in the context of other large challenges facing the world today. This paper discusses the existing body of evidence on climate changes in the past, and uncertainties that prevent scientists to reach full consensus on how climate might change in the future. It extends the time scale of climate changes over the entire history of Earth to help better understanding of hypothetical changes and their consequences that could be expected both in the near and in a very distant future.


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