scholarly journals Assessing the relationship between global warming and mortality: Lag effects of temperature fluctuations by age and mortality categories

2011 ◽  
Vol 159 (7) ◽  
pp. 1789-1793 ◽  
Author(s):  
Weiwei Yu ◽  
Kerrie Mengersen ◽  
Wenbiao Hu ◽  
Yuming Guo ◽  
Xiaochuan Pan ◽  
...  
Keyword(s):  
Global Warming ◽  
Temperature Fluctuations ◽  
Lag Effects ◽  
Effects Of Temperature ◽  
The Relationship

scholarly journals A Review of Dengue’s Historical and Future Health Risk from a Changing Climate

2021 ◽  
Author(s):  
Sutyajeet Soneja ◽  
Gina Tsarouchi ◽  
Darren Lumbroso ◽  
Dao Khanh Tung
Keyword(s):  
Climate Change ◽  
Health Risk ◽  
Dengue Infection ◽  
Future Health ◽  
Adaptation Measures ◽  
Lag Effects ◽  
Risk Estimates ◽  
The World ◽  
The Relationship ◽  
Research And Policy

Abstract Purpose of review The purpose of this review is to summarize research articles that provide risk estimates for the historical and future impact that climate change has had upon dengue published from 2007 through 2019. Recent findings Findings from 30 studies on historical health estimates, with the majority of the studies conducted in Asia, emphasized the importance of temperature, precipitation, and relative humidity, as well as lag effects, when trying to understand how climate change can impact the risk of contracting dengue. Furthermore, 35 studies presented findings on future health risk based upon climate projection scenarios, with a third of them showcasing global level estimates and findings across the articles emphasizing the need to understand risk at a localized level as the impacts from climate change will be experienced inequitably across different geographies in the future. Summary Dengue is one of the most rapidly spreading viral diseases in the world, with ~390 million people infected worldwide annually. Several factors have contributed towards its proliferation, including climate change. Multiple studies have previously been conducted examining the relationship between dengue and climate change, both from a historical and a future risk perspective. We searched the U.S. National Institute of Environmental Health (NIEHS) Climate Change and Health Portal for literature (spanning January 2007 to September 2019) providing historical and future health risk estimates of contracting dengue infection in relation to climate variables worldwide. With an overview of the evidence of the historical and future health risk posed by dengue from climate change across different regions of the world, this review article enables the research and policy community to understand where the knowledge gaps are and what areas need to be addressed in order to implement localized adaptation measures to mitigate the health risks posed by future dengue infection.

Effects of light, temperature and population variability on the germination of seven Spanish pines

2002 ◽  
Vol 12 (4) ◽  
pp. 261-271 ◽  
Author(s):  
A. Escudero ◽  
F. Pérez-García ◽  
A. L. Luzuriaga
Keyword(s):  
Habitat Preferences ◽  
Population Variability ◽  
Nested Models ◽  
Germination Response ◽  
Germination Characteristics ◽  
Different Populations ◽  
Effects Of Temperature ◽  
Germination Traits ◽  
The Relationship ◽  
Pine Species

AbstractMost Pinus species are obligate seeders. Thus, knowledge of germination characteristics can help in the understanding, prediction and manipulation of the regeneration and dynamics of pine forests. Seven pine species with contrasting habitat preferences and different genetic pairwise distances are present in the Iberian Peninsula and the Canary Islands: P. halepensis, P. nigra, P. pinaster, P. pinea, P. sylvestris, P. uncinata and P. canariensis. These seven pine species comprise an exceptional experimental set to test some questions related to germination traits, such as: (1) What are the effects of light and temperature on germination, taking into account interpopulation variability? (2) Is there any association of germination traits with habitat (montane versus lowland) preferences? and (3) What is the relationship between germination traits and the genetic distance between pine species? P. nigra, P. sylvestris and P. uncinata seeds showed faster germination rates. Seeds of P. nigra and P. sylvestris reached high total germination percentages in every temperature and light treatment, suggesting an opportunistic germination strategy. Unlike montane pines, lowland pines did show significant effects of temperature on germination response: final germination was higher between 15°C and 20°C than at warmer and alternating temperatures. Relatively low temperatures associated with the winter rainy season would favour germination of most of these species. Nested models showed that population variability was the main source of variation in germination response. Thus, there is no phylogenetic control of the germination response and, surprisingly, germination traits were not related to habitat preferences. As a consequence, we believe that studies of the germination characteristics of a pine species should consider different populations.

Production of quicklime from Ashaka limestone through calcination process

2021 ◽  
Vol 1 (2) ◽  
pp. 041-048
Author(s):  
Benson Chinweuba Udeh
Keyword(s):  
Particle Size ◽  
Critical Value ◽  
Operating Conditions ◽  
Quadratic Model ◽  
Particle Sizes ◽  
Calcination Process ◽  
Process Effects ◽  
Effects Of Temperature ◽  
The Difference ◽  
The Relationship

This study is on the production of quicklime from Ashaka limestone through calcination process. Effects of temperature, particle size and time on quicklime yield were determined. The experiment was carried out at temperatures of 800, 900, 1000, 1100 and 1200 0C, particle sizes of 80mm, 90mm, 100mm, 300mm and 425mm and times of 0.5hr, 1hr, 2hrs, 3hrs and 4hrs. Analyses of the results showed that quicklime was successfully produced from Ashaka limestone through the calcination process. Quadratic model adequately described the relationship between quicklime yield and calcination factors of temperature, particle size and time. Recorded model F-value of 134.35 implies that the model is significant. The predicted R² of 0.9597 is in reasonable agreement with the adjusted R² of 0.9844; the difference is less than the critical value of 0.2. Optimum yield of 73.48% was obtained at optima operating conditions; temperature of 1000 0C, particle size of 90 µm and time of 3 hrs.

scholarly journals Specimen-based analysis of morphology and the environment in ecologically dominant grasses: the power of the herbarium

2018 ◽  
Vol 374 (1763) ◽  
pp. 20170403 ◽  
Author(s):  
Christine A. McAllister ◽  
Michael R. McKain ◽  
Mao Li ◽  
Bess Bookout ◽  
Elizabeth A. Kellogg
Keyword(s):  
Morphological Characters ◽  
Automated Image Analysis ◽  
Climate Variables ◽  
Theme Issue ◽  
Analysis Techniques ◽  
Temperature And Precipitation ◽  
Sessile Spikelet ◽  
Effects Of Temperature ◽  
The Relationship ◽  
Image Analysis Techniques

Herbaria contain a cumulative sample of the world's flora, assembled by thousands of people over centuries. To capitalize on this resource, we conducted a specimen-based analysis of a major clade in the grass tribe Andropogoneae, including the dominant species of the world's grasslands in the genera Andropogon , Schizachyrium , Hyparrhenia and several others. We imaged 186 of the 250 named species of the clade, georeferenced the specimens and extracted climatic variables for each. Using semi- and fully automated image analysis techniques, we extracted spikelet morphological characters and correlated these with environmental variables. We generated chloroplast genome sequences to correct for phylogenetic covariance and here present a new phylogeny for 81 of the species. We confirm and extend earlier studies to show that Andropogon and Schizachyrium are not monophyletic. In addition, we find all morphological and ecological characters are homoplasious but variable among clades. For example, sessile spikelet length is positively correlated with awn length when all accessions are considered, but when separated by clade, the relationship is positive for three sub-clades and negative for three others. Climate variables showed no correlation with morphological variation in the spikelet pair; only very weak effects of temperature and precipitation were detected on macrohair density. This article is part of the theme issue ‘Biological collections for understanding biodiversity in the Anthropocene'.

scholarly journals The Effect of Temperature and Humidity May Reduce the Growth Rate of the Coronavirus Disease 2019 Epidemic

2020 ◽  
Author(s):  
Lei Qin ◽  
Qiang Sun ◽  
Jiani Shao ◽  
Yang Chen ◽  
Xiaomei Zhang ◽  
...  
Keyword(s):  
Growth Rate ◽  
Relative Humidity ◽  
Effect Of Temperature ◽  
Average Temperature ◽  
Temperature And Humidity ◽  
Scatter Plots ◽  
Low Humidity ◽  
Average Relative Humidity ◽  
Effects Of Temperature ◽  
The Relationship

Abstract Background: The effects of temperature and humidity on the epidemic growth of coronavirus disease 2019 (COVID-19)remains unclear.Methods: Daily scatter plots between the epidemic growth rate (GR) and average temperature (AT) or average relative humidity (ARH) were presented with curve fitting through the “loess” method. The heterogeneity across days and provinces were calculated to assess the necessity of using a longitudinal model. Fixed effect models with polynomial terms were developed to quantify the relationship between variations in the GR and AT or ARH.Results: An increased AT dramatically reduced the GR when the AT was lower than −5°C, the GR was moderately reduced when the AT ranged from −5°C to 15°C, and the GR increased when the AT exceeded 15°C. An increasedARH increased theGR when the ARH was lower than 72% and reduced theGR when the ARH exceeded 72%.Conclusions: High temperatures and low humidity may reduce the GR of the COVID-19 epidemic. The temperature and humidity curves were not linearly associated with the COVID-19 GR.

scholarly journals The relationship between net GHG emissions and radiative forcing with an application to Article 4.1 of the Paris Agreement.

2021 ◽  
Author(s):  
Tom M. L. Wigley
Keyword(s):  
Global Warming ◽  
Radiative Forcing ◽  
Ghg Emissions ◽  
Zero Point ◽  
Paris Agreement ◽  
Test Case ◽  
Net Zero ◽  
Global Warming Potentials ◽  
The Relationship

Abstract This paper provides an assessment of Article 4.1 of the Paris Agreement on climate; the main goal of which is to provide guidance on how “to achieve the long-term temperature goal set out in Article 2”. Paraphrasing, Article 4.1 says that, to achieve this end, we should decrease greenhouse gas (GHG) emissions so that net anthropogenic GHG emissions fall to zero in the second half of this century. To aggregate net GHG emissions, 100-year Global Warming Potentials (GWP-100) are commonly used to convert non-CO2 emissions to equivalent CO2 emissions. As a test case using methane, temperature projections using GWP-100 scaling are shown to be seriously in error. This throws doubt on the use of GWP-100 scaling to estimate net GHG emissions. An alternative method to determine the net-zero point for GHG emissions based on radiative forcing is derived. This shows that the net-zero point needs to be reached as early as 2036, much sooner than in the Article 4.1 window. Other scientific flaws in Article 4.1 that further undermine its purpose to guide efforts to achieve the Article 2 temperature targets are discussed.

Ecocritical Approaches to Literary Form and Genre

2013 ◽  
Author(s):  
Richard Kerridge
Keyword(s):  
Global Warming ◽  
Environmental Concern ◽  
Literary Form ◽  
Environmental Criteria ◽  
The Many ◽  
The Relationship

This article examines the relationship among the issues of urgency, depth, provisionality, and temporality in ecocritical approaches to evaluating literary form and genre. It analyzes the criteria by which ecocritical judgments about texts are reached and suggests that ecocritics should evaluate texts from the viewpoint of environmental concern and be able to introduce environmental criteria into general cultural debate. It highlights the fact the many ecocritics feel that their work has an activist mission and cites the global warming issue as an example.

On the idea of the planetary

Soundings ◽  
2021 ◽  
Vol 78 (78) ◽  
pp. 50-63
Author(s):  
Dipesh Chakrabarty ◽  
Ashish Ghadiali
Keyword(s):  
Global Warming ◽  
Physical World ◽  
Human Consumption ◽  
Rabindranath Tagore ◽  
Atmospheric Sciences ◽  
The Earth ◽  
The World ◽  
The Cold War ◽  
Agent Of Change ◽  
The Relationship

The notion of the planetary allows us to distinguish between the global of globalisation and the global of global warming. Globalisation is the process through which humans created the world we live in, how we converted the planet into a spherical human domain, at the centre of which are the human stories of technology, empires, capitalism and inequality. Global warming is what has resulted at the planetary level as intensified human consumption of the globe's resources has turned humanity into a geological agent of change. The global is 500 years old, while the planetary is as old as the age of the earth. The physical world has its own deep history: over time it has experienced profound changes. If climate change is to be addressed this mutability must be recognised – the unchanging nature of the world can no longer be taken for granted. The interview covers the rise of atmospheric sciences during the Cold War, when the Earth became, effectively, part of a comparative study of planets; the relationship between Marxism and the idea of 'deep history'; the human-made ecological disaster of bush-fires in Australia; the influence of Rohith Vemula and Rabindranath Tagore on planetary thinking and ideas about connectivity; biopower, zoe and the pandemic; and the difficulty of thinking politically about deep history.

Extinguishing Ability: How We Became Postextinction Persons

2018 ◽  
Author(s):  
Claire Colebrook
Keyword(s):  
Global Warming ◽  
Resource Depletion ◽  
Prima Facie ◽  
System Collapse ◽  
The Future ◽  
Forms Of Life ◽  
The Relationship

What is the relationship between extinction and disability? As “we” face a future of resource-depletion, eco-system collapse, and runaway global warming, it might seem more urgent than ever to develop new forms of rationality and technology to allow us to survive. The conception of survival, or living-on, is at the heart of Derrida’s deconstruction, as is an inherently promissory account of time and experience. In the spirit of deconstruction, this chapter looks at the ways in which ability, capacity, and radically future promising are intertwined with an inflated and unsustainable mode of existence. Just as extinction threats pose necessary questions to the present regarding what life or lives will survive into the future, so the legacy of philosophy’s past and conditions pose questions as to the forms of life that have been granted a prima facie right to survival.

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