Dengue is a mosquito-borne viral disease that occurs mainly in the tropics and subtropics but has a high potential to spread to new areas. Dengue infections are climate sensitive, so it is important to better understand how changing climate factors affect the potential for geographic spread and futu...re dengue epidemics. Vectorial capacity (VC) describes a vector's propensity to transmit dengue taking into account human, virus, and vector interactions. VC is highly temperature dependent, but most dengue models only take mean temperature values into account. Recent evidence shows that diurnal temperature range (DTR) plays an important role in influencing the behavior of the primary dengue vector Aedes aegypti. In this study, we used relative VC to estimate dengue epidemic potential (DEP) based on the temperature and DTR dependence of the parameters of A. aegypti. We found a strong temperature dependence of DEP; it peaked at a mean temperature of 29.3°C when DTR was 0°C and at 20°C when DTR was 20°C. Increasing average temperatures up to 29°C led to an increased DEP, but temperatures above 29°C reduced DEP. In tropical areas where the mean temperatures are close to 29°C, a small DTR increased DEP while a large DTR reduced it. In cold to temperate or extremely hot climates where the mean temperatures are far from 29°C, increasing DTR was associated with increasing DEP. Incorporating these findings using historical and predicted temperature and DTR over a two hundred year period (1901-2099), we found an increasing trend of global DEP in temperate regions. Small increases in DEP were observed over the last 100 years and large increases are expected by the end of this century in temperate Northern Hemisphere regions using climate change projections. These findings illustrate the importance of including DTR when mapping DEP based on VC.
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The World’s Leading Resource for Climate Solutions
Our mission is to help the world reach “drawdown”—the point in the future when levels of greenhouse gases in the atmosphere stop climbing and start to steadily decline, thereby stopping catastrophic climate change—as quickly, safely, and ...equitably as possible.
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Climate change, conflict, COVID-19, and gender inequality impacts food security globally. Together with the Ukraine conflict, the food crisis across the world is worsening. UN Women’s Zero Hunger Sustainable Development Goal Map shows that 49.7% of people are facing moderate or severe food insecur...ity in Guatemala, 45.6% in Honduras, and 32.7% in Ecuador. Increasing prices of energy, fertilizer, and agriculture inputs are also raising the prices of food and food production.
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Climate change creates and exacerbates circumstances conducive to gender-based violence. Climate action must tackle gender-based violence.
Global Knowledge for Climate and Public Health. Informing action to protect populations from the health risks of climate change. It is in response to growing calls for actionable information to protect people from the health risks of climate change and other environmental hazards.
Climate and hea...lth are inextricably linked. Climate change, extreme weather events and environmental degradation have fundamental impact on human health and well-being. More people than ever before are exposed to increased climate-related health risks, from poor water and air quality to infectious diseases and heat stress.
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Climate-induced water insecurity poses one of the biggest threats to humanity and will lead to more hunger, disease and displacement
Oxfam water engineers are having to drill deeper, more expensive and harder-to-maintain water boreholes used by some of the poorest communities around the world, mo...re often now only to find dry, depleted or polluted reservoirs.
Today, during World Water Week, Oxfam publishes the first of its series of reports, “Water Dilemmas”, about the growing water crisis, in large part driven by global heating from greenhouse gas emissions. The report describes how climate change will impact water security in different regions, leading to more hunger, disease and displacement.
Carlos Calderon, Humanitarian Advocacy and Partnerships Lead for Oxfam Aotearoa said, “This new Oxfam research is focused on the global Water, Sanitation and Hygiene (WaSH) situation, but it paints a picture that illustrates the complexity of elements that, combined, will continue to increasingly affect women, girls, boys and men in the decades to come. Changing weather, poverty, inequality, gender-based violence, political instability and conflicts are impacting the availability and quality of adequate water systems. All governments, particularly those from rich countries, should responsively take action at a global scale. The clock is ticking. Our children will judge us for our actions today, or for the lack of them.”
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In line with the Climate and Environment Charter for Humanitarian Organisations which IFRC, ICRC and various Red Cross Red Crescent National Societies have endorsed, this short Guide aims to help practitioners integrate environmental and climate change considerations into their work. It has been dev...eloped primarily for logistics staff, administrative staff, and management. It is not necessary to be an environmental expert to use this Guide.
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In Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change
Surge in climate change-related disasters poses growing threat to food security
Adresssing climate change impacts on infrastructure: preparing for change. Fact sheet
A Guide to Disaster Risk Reduction and Climate Change Adaptation
Reporting on Climate Change and Sustainable Development in Asia and the Pacific: A Handbook for Journalists.
UNESCO Series on Journalism education.
It explores the essential aspects of climate change, including its injustices to vulnerable communities, especially women and girls and least develope...d countries, and provides examples of best practices and stories of hope unique to the region. It can be used as a resource for journalists to understand the science of climate change, as well as helping journalists to improve their reporting of the environmental, social, economic, political, technological and other angles of the story
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The devastating impacts of the 2015–16 El Niño will be felt well into 2017. This crisis was predicted, yet overall, the response has been too little too late. The looming La Niña event may further hit communities that are already deeply vulnerable. To end this cycle of failure, there is an urgen...t need for humanitarian action where the situation is already dire, to prepare for La Niña later this year, to commit to comprehensive new measures to build communities’ resilience, and to mobilize global action to address climate change which is creating a ‘new normal’ of higher temperatures, drought and unpredictable growing seasons.
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The discourse on climate change and migration has shifted from labelling migration merely as a consequence of climate impacts, to describing it as a form of human adaptation. This article explores the adaptation framing of the climate change and migration nexus and highlights its shortcomings and ad...vantages. While for some groups, under certain circumstances migration can be an effective form of adaptation, for others it leads to increased vulnerabilities and a poverty spiral, reducing their adaptive apacities. Non-economic losses connected to a change of place further challenge the notion of successful adaptation. Even when migration improves the situation of a household, it may conceal the lack of action on climate change adaptation from national governments or the international community. Given the growing body of evidence on the diverse circumstances and outcomes of migration
in the context of climate change, we distinguish between reactive and proactive migration and argue for a precise differentiation in the academic debate
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The threats posed by climate change to agriculture are now well known. Climate change has already resulted in a negative trend in mean crop yield per decade, and this is likely to continue as the century unfolds. In Africa, 650 million people are currently dependent on rain- fed agriculture and, des...pite progress in the Millennium Development Goals, food and nutrition insecurity remainunacceptably high.
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WHO's Health in the Green Economy sector briefings examine the health impacts of climate change mitigation strategies considered by the Intergovernmental Panel on Climate Change in their Fourth Assessment Report (Climate Change, 2007). Large, immediate health benefits from some climate change strate...gies are to be expected.
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Mosquito-borne diseases are expanding their range, and re-emerging in areas where they had subsided for decades. The extent to which climate change influences the transmission suitability and population at risk of mosquito-borne diseases across different altitudes and population densities has not be...en investigated. The aim of this study was to quantify the extent to which climate change will influence the length of the transmission season and estimate the population at risk of mosquito-borne diseases in the future, given different population densities across an altitudinal gradient.
The Lancet Planetary Health Volume 5, ISSUE 7, e404-e414, July 01, 2021
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The framework responds to the demand from Member States and partners for guidance on how the health sector and its operational basis in health systems can systematically and effectively address the challenges increasingly presented by climate variability and change. This framework has been designed ...in light of the increasing evidence of climate change and its associated health risks (1); global, regional and national policy mandates to protect population health (2); and a rapidly emerging body of practical experience in building health resilience to climate change (3).
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English Analysis on World about Climate Change and Environment, Recovery and Reconstruction and Epidemic; published on 26 Oct 2021 by UNEP
English Analysis on World about Climate Change and Environment, Food and Nutrition and more; published on 07 Oct 2021 by IEP