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The US experienced its worst recorded drought in decades this summer. At its height, the unprecedented aridity extended across more than two-thirds of the continental area of the United States, with its most severe manifestations in the Southwest, but also extending to Oregon, Washington and North Dakota.
US record ‘megadrought’, a menace to food security
This historic drought is the consequence not only of a major heatwave, but also of less rain and snowfall in the winter and spring. In addition to dangerous and devastating fires, this longstanding dry spell produced disruptive effects on the US food supply, as California – the primary producer of fruits, nuts and vegetables in the US – experienced severe drought across 93% of the state.
Even though California and other states have started to implement countermeasures, large-scale investment is still required to improve both urban and agricultural water use, in order to ensure adequate water supply and sanitation across the nation.
Once again, we see how water scarcity continues to threaten life as we know it, compelling us to take action, and to start doing more with less water supply.
This is all the more true given that ongoing climate change is likely to make this type of severe weather even more frequent, rendering the need for action that much more pressing.
Cyclical weather patterns vs extreme weather events
Droughts are produced by years of dry conditions, and while California and other southwestern states are predisposed to cyclical weather patterns, with periods of dry years and periods of wet years, climate change and rising temperatures are turning cyclical shifts into prolonged periods of drought and severe water crises.
Persistent Drought Affects More Than Half of US
Percentage share of the continental United States’ area under different levels of drought (2018-2021)
Source: Statista/US Drought Monitor by USDA/NOAA/University of Nebraska
According to scientific analysis,1 similar extreme and prolonged weather phenomena, resulting from climate change and rising temperature, are likely to become the “new normal”, and will occur with higher frequency, causing even more disastrous consequences.
Echoing these estimations, a recent study found that we are on track to experience the worst drought in 1,200 years.
As of August 2021, Lake Mead, the largest reservoir in the U.S., was filled to only about one-third of its designed capacity – the lowest water level since it was formed in 1935. Next year, at the latest, this decline will lead to substantial water delivery cutbacks for Arizona, Nevada and Mexico, and will directly affect the water supply to adjacent farmlands.²
Consequences of drought: fuelling fires and disrupting food supply
The megadrought comes with both environmental and social consequences. The drier conditions fuel a more severe fire season. By the end of June 2021, more than 30,000 wildfires had affected over 1.4 million acres, the highest level recorded for this time of year since 2011.
In addition to life-threatening fires, the drought has the potential to disrupt agricultural production. California is responsible for two-thirds of U.S. fruit and nut production, and about one-third of vegetable production. Given the water-intensive nature of agriculture, it will be impossible to support the usual production levels. Many farmers have already left large areas of cropland unplanted, especially those farmers producing water-intensive crops such as almonds. In rural areas wells are running dry, jeopardising access to fresh water and sanitation. Today more than one million residents still don’t have access to fresh drinking water in California. All of this points to a huge need for water investment to improve urban and agricultural use of water.
The cost side of climate-change-related disasters
Extreme weather events and prolonged droughts directly and indirectly impact livelihoods and economic sectors, as both are strongly dependent on water.
Droughts and mega heatwaves:
put at risk public water supplies
negatively impact biodiversity
harm human health
reduce energy production.
This type of weather also typically results in increased electricity demand, given the need for air conditioning. This can have cascading effects on economic systems.
Looking at the economic losses caused by climate-change-related disasters, from 1980 to 2021 the U.S. had to contend with average annual costs of USD 45.4 billion.3
From 2020 to 2021, the National Centers for Environmental Information counted thirty separate USD 1 billion disasters, that cost the lives of nearly 600 people, and triggered expenditures amounting to over USD 128 billion.4
Billion-dollar events to affect the United States from 2020 to 2021 (CPI-Adjusted)
Source: NOAA National Centers for Environmental Information (NCEI) U.S. Billion-Dollar Weather and Climate Disasters (2021).
On a global level, between 1970 and 2019 climate and water hazards accounted for 74% of all reported economic losses.5
Allianz Global Investors: helping to address growing water scarcity risks
We look at companies helping society do more with less water supply. While climate-change related drought conditions require significant long-term environmental action, companies producing technologies that help increase the water efficiency of farming can have a big impact. Centre pivot and drip irrigation can result in significant water improvements – with centre pivot irrigation technology enhancing water efficiency by up to 95%.
AllianzGI continues to identify and invest in these innovators that help to increase the efficiency and sustainability of water irrigation systems and to conserve valuable resources, and agricultural players, which can help farmers continue to produce fruits, nuts and vegetables with a much smaller water footprint. Outside of agriculture, improved wastewater management and recycling can also have an impact, with many of companies offering industry- leading solutions to facilitate improvements. We continue to seek out solution providers, helping to direct capital to the most pressing water-related environmental and social challenges.
Find out more about sustainable investment at Allianz Global Investors here:
Land-based Aquaculture: The Answer to Fish- Farming’s Existential Crisis?
Rising demand for healthy, high-end protein is fuelling a surge in fish consumption. While farmed fish can meet this demand and one day potentially offset the need to catch wild fish from the oceans, salmon farming, still has a number of major sustainability challenges like parasites and organic waste that threaten entire ecosystems. Find out how land-based aquaculture can present an opportunity to meet rising demand, and resolve environmental problems.
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Alexandra Russo is a Thematic Equity Product Specialist on the on the Thematic Equity team. Alexandra has 9 years of industry experience and joined Allianz Global Investors in 2012 in marketing. She has held various roles in marketing, operations and investments.
The race is on for companies to declare their commitment to achieving net-zero emissions, as outlined in the Paris Agreement. But given the various inconsistencies in how the phrase is understood, what does “net zero” really mean – and how should progress towards this goal be measured?
Net zero, where there is no net accumulation of greenhouse gases in the atmosphere, will require companies to account for emissions generated by all business activities
Investors can influence the climate transition pathway by investing in companies that commit to net zero through compelling plans and a proven ability to execute on them
Engagement with investee companies is key to understanding sometimes complex decarbonisation strategies, reinforcing transparency, and promoting real progress to net zero
Allianz Global Investors is adopting an innovative engagement approach with its investee companies to help tackle the climate emergency
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