Erin Coughlan de Perez, Tufts University

These days, it’s hard to escape news stories discussing how climate change is contributing to extreme weather disasters, including the recent U.S. hurricanes. Aid agencies are increasingly worried about the widespread damage.

A growing question as these disasters worsen in a warming world is how to pay for recoveries, particularly in poorer countries that have contributed the least to climate change.

I am a climate scientist who researches disasters, and I work with disaster managers on solutions to deal with the increasing risk of extreme events. The usual sources of disaster aid funding haven’t come close to meeting the need in hard-hit countries in recent years. So, groups are developing new ways to meet the need more effectively. In some cases, they are getting aid to countries before the damage occurs.

Disaster aid funds aren’t meeting growing need

Countries have a few ways that they typically send money and aid to other countries that need help when disasters hit. They can send direct government-to-government aid, contribute to aid coordinated by the United Nations, or support disaster response efforts by groups like the International Red Cross and Red Crescent Movement.

However, the support from these systems is almost never enough.

In 2023, the amount of humanitarian funding through the U.N. was about US$22 billion. The U.N. Office for the Coordination of Humanitarian Affairs estimated that countries hit hard by disasters actually needed about $57 billion in U.N. humanitarian aid. This does not even include the costs borne directly by disaster-affected people and their governments.

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To help address damages specifically from climate change, the global community agreed at the U.N. climate conference in 2022 to create a new method – a Loss and Damage Fund. Loss and damage is generally defined as consequences of climate change that go beyond what people are able to adapt to.

The goal of the fund is for countries that historically have done the most to cause climate change to provide funding to other countries that did little to cause it yet are experiencing increasing climate-related disasters.

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So far, however, the Loss and Damage Fund is tiny compared to the cost of climate-related disasters. As of late September 2024, total pledges to the Loss and Damage Fund were about US$700 million. According to one estimate, the costs directly attributable to climate change, including loss of life, are over $100 billion per year.

One goal of the 2024 U.N. climate conference, underway Nov. 11-22 in Azerbaijan, is to increase those contributions.

Sending aid before the disasters hit

In response to these growing needs, the disaster management community is getting creative about how it helps countries finance disaster risk reduction and response.

Traditionally, humanitarian funding arrives after a disaster happens, when photos and videos of the horrible event encourage governments to contribute financial support and a needs assessment has been completed.

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However, with today’s technology, it’s possible to forecast many climate-related disasters before they happen, and there is no reason for the humanitarian system to wait to respond until after the disaster happens.

A global network of aid groups and researchers I work with has been developing anticipatory action systems designed to make funding available to countries when an extreme event is forecast but before the disaster hits.

This can allow countries to provide cash for people to use for evacuation when a flood is forecast, open extra medical services when a heat wave is expected, or distribute drought-tolerant seeds when a drought is forecast, for example.

Insurance that pays out early to avoid harm

Groups are also developing novel forms of insurance that can provide predictable finance for these changing catastrophes.

Traditional insurance can be expensive and slow to assess individual claims. One solution is “index insurance” that pays out based on drought information without needing to wait to assess the actual losses.

African nations created an anticipatory drought insurance product that can pay out when the drought starts happening, without waiting for the end of the season to come and the crops to fail. This could, in theory, allow farmers to replant with a drought-resilient crop in time to avoid a failed harvest.

Without insurance, disaster-affected people usually bear the costs of disaster. Therefore, experts recommend insurance as a critical part of an overall strategy for climate change adaptation.

Boosting social protection systems

Another promising area of innovation is the design of social services that can scale up when needed for extreme weather events.

These are called climate-smart social protection systems. For example, existing programs that provide food for low-income families can be scaled up during and after a drought to ensure that people have sufficient and nutritious food during the climate shock.

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This requires government coordination among the variety of social services offered, and it offers promise to support vulnerable communities in the face of the rising number of extreme weather events.

Future of the Loss and Damage Fund

To complement these innovative disaster risk finance mechanisms, aid from other countries is crucial, and the Loss and Damage Fund is a key part of that.

There are still many areas of debate around the U.N.’s Loss and Damage Fund and what counts as true financial support. There have been discussions over whether investing in a country’s resilience to future disasters counts, whether existing financial systems should be used to channel finance to countries in need, and what damages are truly beyond the limits to adaptation and qualify.

The new Loss and Damage Fund is only of a part of a mosaic of initiatives that is seeking to address climate disasters.

These novel mechanisms to finance disaster risk are exciting, but they ultimately need to be created in conjunction with investments in adaptation and resilience so that extreme weather events cause less damage when they happen. Communities will need to plant different crops, build flood drainage systems and live in adaptive buildings. Managing climate risk requires a variety of innovative solutions before, during and after disaster events.

Erin Coughlan de Perez, Professor of Climate Risk Management, Tufts University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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A bottom-up approach quantifies the contributions of human-caused heating from building energy use during extreme heat events.

The Science

Previous research has found that heat waves and urban heat island effects reinforce each other’s effects. These heat islands are concentrations of buildings, paved areas, and other surfaces that absorb and retain heat. Emissions of heat from buildings are an important part of this heat island effect. Researchers therefore need to understand the interplay of urban microclimates and these building heat emissions. New research developed a method for modeling urban building energy and associated human-caused heat during city-wide heat waves. The researchers used the method to examine the variation over time and space in emissions of waste heat from buildings in Los Angeles. The study incorporated building type, urban microclimate, and large-scale climate conditions.

The Impact

The method provides a high-resolution representation of how buildings contribute to heat islands during heat waves. It details both the magnitude and distribution of these heating effects. The simulation indicates that heat dispersing from buildings to the urban environment increases by as much as 20 percent during a heat wave. Most of this heat is waste heat from air conditioning. The study’s results will serve as a fundamental step in continued investigations of the feedback between changes in building waste heat and urban microclimates during extreme heat events.

Summary

The world is experiencing more frequent and longer-duration heat waves. These heat waves are a serious threat to human health and the stability of electrical grids. Previous studies have identified positive feedbacks between heat waves and urban heat island effects. Heat discharges from buildings and associated energy use have significant effect on the urban environment, and researchers therefore need to understand the interactive effects of urban microclimate and building heat emissions on the urban energy balance. In this study, scientists developed a coupled-simulation approach to quantify these effects, mapping urban environmental data generated by the mesoscale Weather Research and Forecasting (WRF) model, coupled to the Urban Canopy Model (UCM), to simulate urban building energy flows. The scientists conducted a case study in Los Angeles, California, during a five-day heat wave event in September 2009.

Urban Heating

The researchers analyzed the surge in city-scale building heat emission and energy use during the extreme heat event. They first simulated the urban microclimate at high resolution (500 by 500 meters) using WRF-UCM. Next, they generated grid-level building heat emission profiles and aggregated them using prototype building energy models informed by spatially disaggregated urban land use and urban building density data. They analyzed the spatial patterns of anthropogenic heat discharge from the building sector. They also assessed the quantitative relationship with weather conditions and urban land-use dynamics at the grid level. The simulation results indicate that during a heat wave, a rise in building energy use follows, and the associated discharge of anthropogenic waste heat from the buildings to the environment increases by as much as 20 percent on average, varying significantly, both in time and space. Notably, air-conditioning use within buildings intensifies, and resulting waste heat discharges outside of the buildings contribute most (86.5 percent) of the total waste heat transferred to the surrounding urban environment. The study also found that the waste heat discharge in inland, dense urban districts is more sensitive to extreme events than it is in coastal or suburban areas. The generated anthropogenic heat profiles can be used in urban microclimate models to provide a more accurate estimation of urban air temperature rises during heat waves.

Funding

This research was supported by the Department of Energy Office of Science as part of research in the MultiSector Dynamics, Earth, and Environmental System Modeling Program.

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How to make every day recycling day

(Family Features) With so many mixed messages, recycling can feel confusing, but the truth is simpler than you might think. Recycling isn’t just for today – it’s a year-round commitment to a healthier planet.

In honor of National Recycling Day, consider these facts about recycling from the experts and tips to make a difference.

Recycling Is Real
Americans recycle more than 6 billion pounds of plastic every year. Among the plastics recycled, polyethylene terephthalate (PET) remains a responsible material choice. PET is the world’s most recycled plastic, with more than 1.8 billion pounds of PET bottles and containers recovered in the U.S. annually. Since PET bottles can be made from 100% post-consumer recycled content, each recycled bottle contributes to a circular economy where materials are continuously reused instead of wasted.

Recycling PET Plastic is Better for the Environment
Countless others from academics, researchers and industry experts show plastics, such as PET specifically, often have a lower environmental impact. In fact, glass bottles produce three times the greenhouse gas emissions compared to PET bottles, and making an aluminum can produces twice the emissions, according to Life Cycle Assessment studies. Producing PET also uses less energy and water and lowers acid rain and smog potential. Using and recycling PET is a more responsible, more eco-friendly choice than banning plastic outright.

Recycling Saves Energy
Recycling PET bottles requires less energy than producing new glass bottles or aluminum cans. Every PET bottle you recycle helps conserve resources and supports a more responsible production cycle.

Not All Plastics are Created Equal
PET is a superstar among plastics because it can be recycled repeatedly without losing strength or quality. It’s also an inexpensive, lightweight and shatter-resistant package that preserves and protects the food and medicine people place in their bodies.

Recycling Can be Easy
Recycling services can be accessible, with many communities across the U.S. offering easy ways to recycle. Today more than 73% of all U.S. households have access to recycling, according to The Recycling Partnership.

By staying informed, choosing packaging that’s easily recyclable and recycling consistently, you can help build a more sustainable future every day. Visit recyclecheck.org to find out where you can recycle in your community.

5 Recycling Tips

1. Know your plastics. Look for the No. 1 recycling symbol – inside three arrows forming a triangular shape – to identify polyethylene terephthalate (PET), helping ensure your recycling efforts are impactful.
2. Recycle PET plastic packaging over bans. Choose products packaged in PET bottles where possible, as recycling PET reduces reliance on resource-heavy materials and greenhouse gas emissions.
3. See recycling as energy conservation. PET bottle recycling uses significantly less energy compared to producing new glass bottles or aluminum cans.
4. Think of recycling as an investment. Every PET container you recycle contributes to a circular economy and more sustainable world.
5. Get involved within your community. Connect with local recycling programs and stay updated on your area’s recycling guidelines by visiting recyclecheck.org.

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