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This is an article of notable issues relating to the terrestrial environment of Earth in 2022. They relate to environmental events such as natural disasters, environmental sciences such as ecology and geoscience with a known relevance to contemporary influence of humanity on Earth, environmental law, conservation, environmentalism with major worldwide impact and environmental issues.

Events

Environmental policies approved

Environmental disasters

Pollution events

Environmental science

Date / period	Type	Description	Topics	Image
January 10	Analysis, Assessment	Researchers build upon previous studies documenting biodiversity loss to confirm that a sixth mass extinction event, entirely caused by anthropogenic activity, is currently underway.
January 10	Analysis, Proposal	A study quantifies climate change mitigation potentials of 'high-income' nations shifting diets – away from meat-consumption – and restoration of the spared land.
January 18	Analysis, Assessment	A study suggests and defines a 'planetary boundary' for novel entities such as plastic- and chemical pollution and finds that it has been crossed.
January 18	Analysis, Assessment	A study for the first time attempts to assess and quantify complete societal costs of cars (i.e. car-use, etc).
February 1	Analysis, Assessment, Observation	The American Geophysical Union reports, based on a study by Chinese scientists published in November, that climate change has likely begun to suffocate the world's fisheries, passing a critical threshold of oxygen loss in 2021.
February 3	Observation, Development	The first comprehensive global map of oil and gas "ultra-emitters" of the potent greenhouse gas methane based on satellite data is published.
February 9	Development	Researchers report the development of a viable flash JH-based process to recover rare-earth elements used in modern electronics from industrial wastes with practical potential to reduce environmental/health impacts from mining, waste-generation and imports if it can be scaled up.
February 14	Observation, Assessment	The most comprehensive study of pharmaceutical pollution of the world's rivers finds that it threatens "environmental and/or human health in more than a quarter of the studied locations".
February 15	Analysis, Projections	NASA publishes its latest Sea Level Rise Technical Report, an update of the 2017 edition, which includes projections for sea-level rise through to the year 2150. The agency warns that sea levels may rise as much over the next 30 years as during the previous 100.
February 16	Analysis	A study models the system of coupled feedback processes (including potential mitigation tipping points) that may shape the trajectory of global greenhouse gas emissions over the century in the contemporary socioeconomic system if it both persists as is and its components remain largely unreformed. Broad factor-domains include public perceptions of climate change, future mitigation technologies' characteristics, and the responsiveness of political institutions.
February 17	Development	Bionanotechnologists report the development of a viable biosensor, ROSALIND 2.0, that can detect levels of diverse water pollutants.
February 23	Development	Researchers report the development of a quantum gradiometer – an atom interferometer quantum sensor – which could be used to map and investigate subterraneans.
February 23	Analysis, Review, Projections	UN researchers publish a comprehensive study about climate change impacted wildfires with projections (e.g. a 31–57% increase of extreme wildfires by 2100) and information about impacts and countermeasures.
February 28	Analysis, Assessment	A study shows annual carbon emissions (or carbon loss) from tropical deforestation have doubled during the last two decades and continue to increase.
February 28	Review	The IPCC releases the second part of its Sixth Assessment Report on climate change. It shows that any further delay in concerted global action would mean missing the rapidly closing window to secure human wellbeing and the planet's health against cascading impacts.
March 1	Analysis, Observation	Atmospheric scientists report that the 2022 volcano eruption in Tonga, Pacific Ocean – the largest recorded volcanic eruption since 1991 which reportedly cooled global climate by ~0.6 °C during 15 months – did not have a cooling effect (volcanic winter) of significance to global climate change (i.e. a cooling of ~0.004 °C during the first year).
March 7	Analysis, Observation	Researchers report that more than three-quarters of the Amazon rainforest has been losing resilience due to deforestation and climate change since the early 2000s as measured by recovery-time from short-term perturbations ("critical slowing down" (CSD)), reinforcing the theory that it is approaching a critical transition. On March 11, INPE reports satellite data that show record-high levels of Amazon deforestation in Brazil for a February (199 km²).
March 7	Analysis, Observation	A study suggests that half of the US population has been exposed to substantially detrimental lead levels in early childhood – mainly from car exhaust whose lead pollution peaked in the 1970s.
March 9	Analysis	Researchers report that, on average, the elderly played "a leading role in driving up GHG emissions in the past decade and are on the way to becoming the largest contributor" due to factors such as demographic transition, low informed concern about climate change and high expenditures on carbon-intensive products like energy which is used i.a. for heating rooms and private transport.
March 10	Analysis, Assessment, Proposal	A study estimates that "relocating current croplands to optimal locations, whilst allowing ecosystems in then-abandoned areas to regenerate, could simultaneously decrease the current carbon, biodiversity, and irrigation water footprint of global crop production by 71%, 87%, and 100%", with relocation only within national borders also having substantial potential.
March 16	Analysis, Observation	Researchers report that over 80% of the growth of methane emissions during 2010–2019 was caused by tropical terrestrial emissions.
March 21	Observation, Analysis	Before formal publication of the 'Global Carbon Budget 2021' preprint, scientists report, based on Carbon Monitor data, that after COVID-19-pandemic-caused record-level declines in 2020, global CO2 emissions rebounded sharply by 4.8% in 2021, indicating that at the current trajectory, the 1.5 °C carbon budget would be used up within 9.5 years with a two-thirds likelihood.
March 24	Review	Scientists review the biophysical mechanisms by which forests influence climate, showing that beyond 50°N large scale deforestation leads to a net global cooling, that tropical deforestation leads to substantial warming from non-CO2-impacts, and that as well as how standing tropical forests help cool the average global temperature by more than 1 °C.
March 31	Analysis	Depletion of ozone in the stratosphere and, more importantly (60%), ozone increase in the troposphere is shown to be responsible for ~30% of upper Southern Ocean interior warming between 1955 and 2000.

See also

General

• 2020s in environmental history
• 2022 in climate change
• Green recovery
• 2022 in space
• List of environmental issues
• Outline of environmental studies

Natural environment

• List of large volcanic eruptions in the 21st century
• Lists of extinct animals § Recent extinction
• Category:Species described in 2022
• Category:Protected areas established in 2022

Artificial development

• Timeline of sustainable energy research 2020–present
• 2022 in rail transport
• Human impact on the environment

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Applications	Energy conservation Environmental technology Natural resource management Pollution control Public transport encouragement Recycling Remediation Renewable energy Road ecology Sewage treatment Urban metabolism Water purification Waste management
Lists	Degrees Journals Research institutes Glossary Environment by year
See also	Human impact on the environment Sustainability Technogaianism
Category scientists Commons Environment portal WikiProject

References

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• 2022 in the environment
• 2022 in science