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RESEARCH | ANALYSIS | SOLUTIONS

Understanding the impact of stratospheric water vapor

An independent analysis of the role of air traffic in climate change, and potential solutions for a safer future.

A MAJOR CLIMATE CHALLENGE

Stratospheric Water Vapor, an Often-Overlooked Impact

Regarding its origin and accumulation, as we have seen, water vapor emitted by aircraft can influence the climate by altering the composition of the stratosphere. But in the Northern Hemisphere, this water vapor can also come from hurricanes and the thawing of permafrost in Siberia, which releases methane and hydrogen and, upon reaching the ozone layer, also produces water vapor.

This accumulation of water vapor strongly accelerates the greenhouse effect.

This phenomenon remains poorly understood, but it deserves independent scientific analysis.

Analysis

An approach based on scientific and independent data.

Understanding

Clear explanations of the mechanisms and their impacts.

Solutions

Concrete approaches for a more sustainable future for air travel.

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UNDERSTANDING THE PHENOMENON

Water vapor
in the stratosphere

At high altitudes, the presence of water vapor alters the physical and chemical balances of the atmosphere. Understanding these mechanisms makes it possible to better assess their climatic consequences.

ALTITUDE

8–50 km

WATER VAPOR

A natural greenhouse gas

CLIMATE

A complex atmospheric balance

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AN URGENCY THAT TRANSCENDS BORDERS

Understanding the Phenomenon Is Already the First Step Toward Taking Action.

The increase in water vapor in the stratosphere accelerates global warming. The decisions we make today will have lasting consequences for our planet.

2005

The beginning of the observed acceleration of global warming.

Today

An atmosphere that is changing rapidly.

2050

Decisive choices for climate stability.

2100

The long-term impact of our decisions.

OUR SOLUTION

Three Approaches to Address Climate Change

Concrete solutions to reduce the climate impact of air traffic
and help preserve the balance of our atmosphere.

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01

POLAR ICE SHEETS

Reduce the melting of glaciers and sea ice in the Arctic and Antarctic.

To Stop the Runaway Climate Warming of the Arctic Ocean.

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02

AIR TRAFFIC

Reduce Flight Altitude to Below 8,000 Meters.

Reduce Flight Altitude to Below 8,000 Meters, Returning to the Cruising Altitudes of Propeller-Driven Aircraft That Are Climate-Neutral.

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03

TROPICAL OCEANS

Addressing Ocean Warming

Explore approaches aimed at limiting the increase in ocean temperatures in order to combat the increasing intensity of cyclones that deposit water vapor into the stratosphere.

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PIUFORTAVI

RESEARCH | ANALYSIS | SOLUTIONS

A reflection and resources dedicated to climate challenges and the solutions being considered for the future.

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