The Sixth Assessment Report (AR6) of the United Nations Intergovernmental Panel on Climate Change assesses the physical science of climate change. It finds that weather and climate events like extreme heat, heavy rainfall, fires and droughts are becoming more severe and frequent due to climate change. Carbon dioxide is the dominant cause of global warming under all emissions scenarios. The report highlights that the climate is rapidly changing due to human influence, with Arctic sea ice at its lowest level in over 150 years, rising sea levels, and declining glaciers. It concludes that halving emissions by 2030 and reaching net zero by 2050 can stop global warming.

1. AR6 Climate
Change
2021:
The Physical
Science Basis
An Overview
Released on 9 August 2021
Dr N Sai Bhaskar Reddy

3. What is Sixth
Assessment
Report (AR6)?
The Sixth Assessment Report (AR6)
of the United Nations
Intergovernmental Panel on
Climate Change (IPCC) is the sixth
in a series of reports intended to
assess scientific, technical,
and socio-economic information
concerning climate change.
This report evaluates the
physical science of climate
change – looking at the past,
present, and future climate.
It reveals how human-caused
emissions are altering our
planet and what that means for our
collective future.

4. Highlights of
Sixth
Assessment
Report (AR6)
Weather and climate events – such as
extreme heat, heavy rainfall, fire conditions,
and droughts – are becoming more severe
and frequent because of climate change.
The report finds we are already edging closer
to a 1.5 degrees Celsius warmer world, and
every day emissions rise the prospects for
averting the worst impacts of climate change
become dimmer.
Carbon dioxide has been and will continue
to be the dominant cause of global
warming under all greenhouse gas
emissions scenarios.
It says, if greenhouse gas emissions are
halved by 2030 and net zero by 2050,
global warming can be stopped.
Also, IPCC report vindicates India’s position
that historical cumulative emissions are the
source of the climate crisis that the World
faces today.

5. Major Concerns
The report highlights that our
climate is rapidly changing due
to human influence and is
already altering our planet in
drastic ways –
Arctic Sea ice is at its lowest
level in more than 150 years;
Sea levels are rising faster than
at any time in at least the last
3,000 years; and
Glaciers are declining at a rate
unprecedented in at least 2,000
years.

6. The Current State of the Climate

7. The Current State of the Climate

8. Possible Climate Futures

9. Possible Climate Futures

10. Climate Information for Risk Assessment
and Regional Adaptation

11. Limiting Future Climate Change

12. Need of the hour
26th UN Climate Change
Conference (COP26)

13. Thank you