by Laurie Foulon | 31 Oct 2023 | Insights
We continue our series on guiding you through Environmental Indicators relevant to a Life Cycle Assessment (LCA) methodology, this time diving into factors with a direct effect on the environment & human health (find part one of our series here: Climate Change indicators).
These indicators help assess the impact from three different aspects: the reaction of sunlight with emissions from fossil fuel combustion, the retreat of oxygen in freshwater systems and the consequential suffocation of its fauna and flora, and the reduction in the pH of the ocean. Let’s take a closer look:
Photochemical Oxidation Potential (POP)
On Earth, pollution mixed with heat and sunlight creates a concentration of Ozone (O3 gaz) in the atmosphere (stratosphere + troposphere). This gaseous element, when released in the stratosphere, acts like sunscreen for all living organisms, shielding the Earth’s surface from most of the sun’s UV light (unless it creates depletion in the atmospheric layer, see here for Ozone Depletion Potential).
However, when this concentration remains at ground level in the troposphere, it affects the air that we breathe as humans and therefore starts becoming a health hazard. When inhaled, ozone reacts chemically with many biological molecules in the respiratory tract, leading to a number of adverse health effects.
We call this secondary air pollution Photochemical oxidation, also known as Summer Smog. Chemically speaking, photo-oxidant formation is a photochemical creation of reactive substances: it is formed in the atmosphere by nitrogen oxides and volatile organic compounds in the presence of sunlight, often the consequence of emissions from fossil fuel combustion. POP calculates the destructive effects of ozone in the troposphere over a time horizon of 100 years.
Eutrophication Potential (EP)
Eutrophication calculates the destructive effects of ammonia, nitrates, nitrogen oxides and phosphorus (emitted in air and waters) on freshwater systems. In inland waters, it is one of the major factors that determine the ecological quality of an aquatic environment.
This process of pollution occurs when a lake or stream becomes over-rich in plant nutrient – as a consequence, phytoplankton increases, and the water becomes overgrown in algae and other aquatic plants. The plants die and decompose, robbing the water of oxygen so that ultimately the lake, river, or stream becomes lifeless.
While eutrophication occurs naturally in freshwater systems, man-made eutrophication occurs over millions of years and is caused by organic pollutants from man’s activities, like effluents from industries and homes.
Acidification Potential (AP)
Acidification is an environmental problem caused by acidified rivers/streams and soil due to anthropogenic air pollutants such as ammonia, nitrogen oxides and sulphur dioxide. When acids are emitted, the pH factor falls and acidity increases, which for example can involve the widespread decline of coniferous forests and dead fishes in lakes in Scandinavia.
In the ocean, we define acidification as a reduction of the pH over an extended period of time, and it is caused primarily by an uptake of carbon dioxide (CO2) from the atmosphere: the ocean absorbs the extra amount of CO2 emitted in our atmosphere. We are already observing this change in the deep ocean, especially at high latitudes.
It affects marine organisms, with a consequence on the ecosystems they belong to in and above water: disrupting the food chain (increase of the mobilisation and the leaching behaviour of heavy metals in soil), altered prey availability (for example, krill for whales), impact on habitats (lower pH destroys coral reefs), but also the amplification of noise pollution by a modification of the underwater acoustics.
As an indicator, Acidification Potential calculates the impact of the potential change in acidity in the soil due to the atmospheric deposition of sulfates, nitrates, phosphates, and other compounds.
Learn more
Get in touch with us at info@waterrevolutionfoundation.org to find out more about the scientific methodology used within our programmes and how you can get involved. Stay tuned to hear about the remaining indicators!
by Water Revolution Foundation | 12 Sep 2023 | Insights
Within the Life Cycle Assessment (LCA) methodology, 10 environmental indicators are used to evaluate the impact of superyachts, beginning with those related to climate change.
These indicators measure the effect on the climate, specifically the Greenhouse effect, from two different perspectives: one considers the emission of greenhouse gases such as methane, CO2, and nitrous oxide, while the other examines chemical compounds relevant for Ozone layer depletion.
Global Warming Potential
The Earth receives energy from the sun through solar radiation, with about half of this energy being absorbed by the earth’s surface. The other half is reflected back into the atmosphere as infrared radiation or heat. Greenhouse gases (GHGs) trap this radiation in the atmosphere, thereby heating the Earth. Consequently, the more GHGs that are present in the atmosphere, the warmer the Earth’s temperature becomes. This process is known as the greenhouse effect.
In order to make meaningful comparisons between GHGs, scientists have adopted CO2 as the benchmark for measuring their heat-trapping abilities. CO2 is a clear, odourless gas produced during carbon combustion and in the respiration of living organisms. The heat-trapping potential of a gas, measured against CO2 over a fixed period, is known as Global Warming Potential (GWP). CO2 is used as a benchmark to measure the GWP of substances, which is expressed in kg of CO2eq.
Ultimately, GWP evaluates the potential impact of different gaseous emissions on climate change by calculating the radiative force over a 100-year time horizon.
Ozone Depletion Potential
In the stratosphere, an ozone-rich layer called the Ozone layer exists. The formation of the ozone hole is directly linked to the stratosphere’s temperature. Once temperatures drop below -78°C, polar stratospheric clouds tend to form, exacerbating ozone depletion over both of the Earth’s hemispheres.
The Ozone layer acts like sunscreen for all living organisms, shielding the Earth’s surface from most of the sun’s UV light. Its depletion could cause serious damage for humans, animals, plants and materials. Ozone Depletion Potential (ODP) calculates these destructive effectives over a time horizon of 100 years.
Learn more
Get in touch with us at info@waterrevolutionfoundation.org to find out more about the scientific methodology used within our programmes and how you can get involved. Stay tuned to hear about the remaining indicators!
by Water Revolution Foundation | 5 Aug 2021 | Insights
Our commitment is to launch a YETI 1.0 in November this year. Next week we kick-off the internal fleet review, testing the calculation method that we have been working on since March 2019. Simultaneously, the YETI group wishes to wholeheartedly invite shipyards, naval architects, management companies and class societies to register for being in our peer-review group. This group will be invited to review the work done so far and to test the YETI 1.0 calculator. Being in the peer-review group means making data available to test the calculator with. This data can remain anonymous and will be handled confidentially by the Water Revolution Foundation team and is not shared with the group. The goal is to test the robustness and scope of the calculator and look at the spread of results. Contact us to express your interest for being in this peer-review group.
by Water Revolution Foundation | 28 Jun 2021 | Insights
Our united passion for the water is the very reason our industry exists. We are intrinsically connected to the oceans and our future relies on their health.
But the very environment we treasure is in danger. The oceans are ailing. Overfishing, pollution and negligence is putting immense pressure on the marine world. Without urgent help, it will be too late to turn the tide. To continue enjoying the oceans, we need to work together to safeguard them. Our industry, with its innate connection to the water, is in a unique strategic position to take action and help shape a better future.
Alongside our efforts to reduce the footprint of the superyacht industry, we recognise that for a well-rounded approach and a sustainable future, we must also directly invest in conservation efforts. We see a vital role for ourselves as connectors, directing support to the most relevant and effective projects. Our first endorsed project, the Important Marine Mammal Areas (IMMA) programme, exemplifies this approach.
The IMMA programme aims to support the restoration of the balance of life in the ocean by identifying the most important marine habitats for marine mammals and prioritising them for conservation actions. We view it as an opportunity for the superyacht community to take on a stewardship role of the oceans with companies, professionals, owners and charterers alike coming together to collectively support the programme’s important work and help protect our precious oceans.
Learn more about the IMMA programme and how you can contribute to our crowdfunding campaign
by Water Revolution Foundation | 22 Jun 2021 | Insights
You’ve probably heard about carbon offsetting – a way to compensate for your environmental footprint. But this is an outdated model that facilitates carbon credit trading and, as such, offers no incentive to improve. And if we want to become truly sustainable, we need to make real changes by both reducing our environmental impact and restoring nature’s capacity to cope with negative impacts. This two-direction improvement should be viewed as an investment that delivers a return, rather than simple offsetting.
Online tools can be used to calculate your impact, but rather than offsetting that figure with the equivalent carbon credits, we encourage you to instead contribute to the most effective ocean conservation projects. It’s time we made the ocean a key stakeholder of our industry. After all, a healthy ocean is critical for the sustainability of the yachting sector.
The Important Marine Mammal Areas (IMMA) programme is our first endorsed project. It aims to support the restoration of the balance of life in the ocean by identifying the most important marine habitats for marine mammals and prioritising them for conservation actions. We view it as an opportunity for the superyacht community to take on a stewardship role of the oceans with companies, professionals, owners and charterers alike coming together to collectively support the programme’s important work and help protect our precious oceans.
Learn more about the IMMA programme and how you can contribute to our crowdfunding campaign
by Water Revolution Foundation | 18 Jun 2021 | Insights
The Important Marine Mammal Areas (IMMA) programme aims to support the restoration of the balance of life in the ocean by identifying the most important marine habitats for marine mammals which can then be prioritised for conservation actions. It’s widely supported by the scientific community – and for good reason. It’s a transformative programme that ticks all the right boxes:
- It is of the highest scientific level.
- It meets the most stringent transparency and governance requirements.
- It works with the most renowned ocean scientists and marine biologists – both non-political and independent.
- It is endorsed by leading scientific and conservation institutions.
- It has the highest visibility amongst scientists, governments, NGOs, industries and media.
- It includes possibilities for ‘citizen science’, where interested people can participate in research and conservation actions.
- It focuses on the recovery of the ocean ecosystem by tackling the problem at its source – with accelerating effects too.
- It can feed into superyacht-specific operational programmes.
- It is preparation for a future that better protects the ocean’s ability to remove carbon from the atmosphere.
- In short, it’s the role model ocean conservation programme with a multiplier effect to boot.
The IMMA approach is based solely on the best available science, with no influence from politics or other stakeholders. This scientific legitimacy is part of the reason why the programme has such widespread support from both the ocean conservation community and regulatory bodies.
Our crowdfunding campaign is an opportunity for the superyacht community – companies, professionals, owners and charterers alike – to take on a stewardship role of the oceans. Collectively, we can support the important work of the IMMA programme and help protect our oceans.
Learn more about the IMMA programme and how you can contribute to our crowdfunding campaign
