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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La tendencia al calentamiento en América Latina y el Caribe continuó en 2021. La tasa media de aumento de las temperaturas fue de aproximadamente 0,2 °C por década entre 1991 y 2021, en comparación con los 0,1 °C por década registrados entre 1961 y 1990.En 2021, la temperatura se situó por e...ncima de la media de 1981-2010 en todas las subregiones, habiéndose registrado la anomalía máxima de +0,59 (±0,1 °C) en la región de México y América Central, lo que corresponde a +0,97 (±0,1 °C) por encima del período de referencia de 1961-1990 de la OMM para el cambio climático.
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Billions of people are at risk of preventable death and illness from extreme heat. The Global Heat Health Information Network is helping to increase awareness and capacity to better manage and adapt to the health risks of dangerously hot weather in a changing climate.
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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The platform mapping climate risks and finding solutions
Climate change creates and exacerbates circumstances conducive to gender-based violence. Climate action must tackle gender-based violence.
As climate impacts intensify across the globe, nations must dramatically increase funding and implementation of actions designed to help vulnerable nations and communities adapt to the climate storm
As climate impacts intensify across the globe, nations must dramatically increase funding and implementation of actions designed to help vulnerable nations and communities adapt to the climate storm
Selon un nouveau rapport du Programme des Nations Unies pour l'environnement (PNUE), alors que les conséquences du réchauffement climatiques s'intensifient dans le monde entier, les nations doivent accroître considérablement le financement et la mise en œuvre des actions destinées à aider les... nations et les communautés vulnérables à s'adapter à la tempête climatique.
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Considerando las repercusiones del cambio climático cada vez más intensas en todo el mundo, las naciones deben aumentar drásticamente la financiación y la implementación de medidas diseñadas para ayudar a las naciones y comunidades vulnerables a adaptarse a la tormenta de fenómenos climático...s extremos, señala un reciente informe del Programa de las Naciones Unidas para el Medio Ambiente (PNUMA).
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Climate information is critical towards strengthening the decision making among different users interested in mitigating impacts of climate related disasters. However, there is need for the climate users to have basic knowledge on weather and climate concepts and to a larger extend, early warning ea...rly action (EWEA) system and approach. This manual presents an opportunity for the climate users including communities to acquire basic knowledge on Early Warning Early Action and this entails; understanding risk areas, existing early warning systems, communication of early warning information and enhancing disaster preparedness through translating early warning into early actions. The EWEA manual largely target the users in different sectors and communities. The execution of the EWEA manual is planned for 3 days and this does incorporate different methods such as; PowerPoint presentation, group work discussions as well as practical exercises.
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Climate changes lead to disasters and all of us must be prepared to support others as well as ourselves during such difficult times. Extreme weather events such as floods, wildfires, storms, or heat waves are stressful and the advice offered in the new one-pager reminds the general public of what th...ey can do to support their families, friends, neighbors, and community.
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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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The climate crisis and accelerating environmental changes caused by human activity are posing bigger and bigger threats to health worldwide, so it’s more vital than ever before that we turn our ingenuity to making our planet a healthier place to live
Adresssing climate change impacts on infrastructure: preparing for change. Fact sheet
Using an ensemble of climate models and socioeconomic scenarios, WRI scored and ranked future water stress—a measure of competition and depletion of surface water—in 167 countries by 2020, 2030, and 2040. We found that 33 countries face extremely high water stress in 2040 (see the full list). We... also found that Chile, Estonia, Namibia, and Botswana could face an especially significant increase in water stress by 2040. This means that businesses, farms, and communities in these countries in particular may be more vulnerable to scarcity than they are today.
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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 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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