Where in the world: A regional exploration of the IPCC report

9 August 2021

The sixth Intergovernmental Panel on Climate Change report painted a global picture of climate change. But for the first time, it also filled in the details by outlining the effects regionally.

Although
there are some common themes globally (generally warmer temperatures and
changes in precipitation),  how this
crisis manifests and continues to manifest will look different the worldover.

“Climate
change is already affecting every region on Earth, in multiple ways,” said IPCC
Working Group Co-Chair, Panmao Zhai. “The changes we experience will increase
with additional warming.”

Within each region, the IPCC breaks down these changes we will experience even further. While we can’t cover every detail here, we can take a virtual trip around the world to broaden regional understanding.

Europe

Here in Europe
we can expect warmer temperatures, increased flooding and sea level rise.
Though there is variability, the trends observed here “cannot be explained
without accounting for anthropogenic factors,” the report reads.

There will be fewer cold spells and frost
days. So, we can also expect heatwaves to occur more often and more intensely. The
continent can also expect to see increased precipitation and flooding, in all
the regions besides the Mediterranean.

Sea level is projected to rise in all areas
(except the Baltic Sea) regardless of how much temperatures continue to
increase due to ice melting that has already been set into motion.. Extreme sea
level events will become ‘more frequent’ and ‘more intense.’

Ireland is included in the Northern Europe
region, which can expect to see increases in severe windstorms and increases in
flooding.

Africa

Travelling south, Africa
has seen heat extremes beyond the natural variability. These increases in
temperature have been more rapid than the global averages, with human-caused
climate change being the “dominant driver.”

The continent will largely see decreases in
precipitation, resulting in drought and more arid conditions for agriculture.
Though the projections also anticipate several regions to experience heavy
rainfall and flooding that could overwhelm infrastructure.

Marine heatwaves have become more intense. Sea
level rise will also occur  and the West
African Monsoon is projected to see increased precipitation and a delayed
season.

Asia

In Asia, the climate varies from glaciers in the North, to the tropics in the Southwest. Thus, although this is one region, there are dramatically different expected effects.

In North Asia, permafrost is melting. Glaciers
are declining in both the Himalayan Mountains and near the Artic. Run-off from
the glaciers will increase, and seasonal snow duration will decline. Fire
seasons are expected to increase and intensify.

While in the south, heatwaves and humid
heat stress will be ‘more intense and frequent.’ The observed rainfall trends
in the Southeast of the continent are not ‘spatially coherent or consistent.’ Similarly,
the Monsoon in this region has weakened, changing the precipitation levels.

Across the region, “heat extremes have
increased while cold extremes have decreased, and those trends will continue” reads
the report. Lastly, the relative sea level as increased faster than the global
average.

Australasia

In the land
down under
, land areas have already increased by 1.1°C  to 1.4°C. The annual temperature changes are
above ‘natural variability in all land regions.’

Most of this region’s population lives near
the ocean,  so relative sea level rising
at a rate higher than the global average and a retreating of sandy shorelines
may have drastic impacts.

An increase in marine heatwaves and ocean
acidity has already been observed and is likely to increase. Inland, heavy
rainfall and river floods are also expected to increase.

Fire season has intensified, is more
frequent and lasts longer in more extreme weather. Sand and dust storms are
also projected to increase. All these changes in “climatic impact-drivers”
would be more widespread the higher the warming levels.

South America

Across the Pacific ocean, South
America
has already seen average temperatures increase, and this will
continue at rates higher than the global average. Relative sea level in this
region has also increased more than the global average.

Similar to other regions, this area will
see increased temperatures and complicated precipitation projections. There
will be more intense and frequent extreme rainfall, leading to overwhelming
floods. In parts of the Amazon, the number of days with a temperature above 35°C
could increase by more than 150 days.

The area is projected to see increased agricultural
and ecological drought’ which can affect several different sectors, like
health, agriculture, and ecosystems. These effects are in part due to an
expected delay in the South American Monsoon.

North America

All regions in North
America
are expected to experience a change in their climate. Some areas
will see common changes while others are more distinct, that could require “unique
combinations of adaptation and risk-management challenges.”

Storms are expected to become more extreme.
The South of this region will see heavier precipitation in hurricanes, while
other areas would see severe storms or dust storms.

The West can expect increases in drought
and fire weather. On the other extreme, this area and the entire region can also
expect increases in extreme precipitation and flooding.

The report also reads that, “temperate
change (mean and extremes) in observations in most regions is larger than the
global mean and is attributed to human influence.”

Small Islands

Lastly, for islands
in the Pacific Ocean, Indian Ocean and Caribbean sea, the biggest threat is sea
level rise. Other changes include ocean acidification and changes in rainfall which
lead to more aridity and severe droughts.

These islands
will face more intense hurricanes. Storm surges can overwhelm the local
infrastructure, endangering their population.  

As an Island in the North Atlantic, Ireland
faces different challenges than these small islands, but is also vulnerable to sea
level rise and warming temperatures.

The IPCC report makes it clear that
regardless of where you are in the world, climate change has already had or
will impose some effect.  

For more global exploration, check out the
IPCC’s interactive
atlas
.

By Sam Starkey

The post Where in the world: A regional exploration of the IPCC report appeared first on Green News Ireland.