Frequently Asked Questions (FAQs)


Calculating flight emissions

How are emissions from aviation calculated?

How precise are the calculations?

Which factors influence the emissions of a specific flight?

Which climate relevant emissions are taken into account?

How are non-CO2 emissions accounted for?

Does it make a difference if I fly economy, business or first?

How is the price per ton calculated?

Why do different offset calculators, calculate different emissions for the same route?

Can I also offset other emissions?


BOKU climate proection projects

What makes the BOKU offset projects different?

Why are BOKU projects not externally certified (i.e. through CDM)?

How is the scientific quality of the projects guaranteed?

Why are BOKU climate protection projects implemented in ‘developing’ countries?


Standards and methodologies which deal with the certification fo carbon offset projects

What kind of different standards and methodologies exist?


My donation to BOKU climate protection projects

Who guarantees the correct use of my offset donation?

Is my donation paid directly to the projects?

How much of my donation goes toward the BOKU climate protection projects?

Is my donation tax deductible?


Carbon offsetting

What is carbon offsetting / Principle of carbon offsetting?

If I offset my emissions, can I fly as much as I want?

Will carbon offsetting still be necessary now that aviation has been integrated into the EU-ETS?


Climate change and climate protection

Is anthropogenic climate change proven?

What is the IPCC?

What is the Framework Convention on Climate Change (UNFCCC)?

What is the Kyoto Protocol?

What are the so-called flexible mechanisms?

How high is the climate-compatible annual emissions-budget of a person?


General questions

Can I book BOKU carbon offsetting with my travel agent?