The scientific evidence that the world’s climate is changing is extensive and clear. Understanding the role of the Polar Regions in climate change is not only a huge scientific challenge but also an urgent priority for society.

The Antarctic is a pivotal part of the Earth’s climate system and a sensitive barometer of environmental change. Although remote and inhospitable, Antarctica is Earth’s most powerful natural laboratory. Understanding how the Antarctic is responding to current climate change – and what the continent was like in the past – is essential if scientists are to be able to more accurately predict future climate change and provide accurate information to politicians and policy makers.

British Antarctic Survey (BAS) has for the past 60 years been responsible for most of the UK’s scientific research in Antarctica and its current five-year research strategy is focussed on deepening our understanding of climate change.

Antarctic ice cores reveal the clearest link between levels of greenhouse gases in the atmosphere and the Earth’s temperature. They show that the temperature of the climate and the levels of greenhouse gases are intimately linked. In 2004, ice core scientists at BAS working together with colleagues from other European nations successfully extracted a three-kilometre ice core from the Antarctic. This core contains a record of the Earth’s climate stretching back 800,000 years – giving us by far the oldest continuous climate record yet obtained from ice cores.

BAS geologists can look back even further in time. By studying Antarctic rocks and sediments from the sea and lake beds, they are able to get a picture of what the Antarctic was like millions of years ago when the continent was warm and supported plants and animals such as dinosaurs. Understanding how the ice sheets that currently cover the continent developed and how they have receded in the past is essential if we are to be able to predict how those ice sheets will behave in a warmer world.

Much of BAS science is done on the Antarctic Peninsula – one of the fastest warming parts of the planet. BAS glaciologists are also studying the West Antarctic Ice Sheet, parts of which are thinning rapidly. Their work is crucial to understanding whether this thinning could signal the start of the ice sheet’s collapse, an event that would cause sea levels to rise much more than currently predicted.

On sea as well as on land, BAS scientists are investigating climate change. As the waters warm around Antarctica, ecologists at BAS are looking at how penguins, seals and the other species that make up one of the world’s largest marine ecosystems are responding.

Because the causes and effects of climate change are extraordinarily complex, assembling all the pieces of the climate change jigsaw is a huge challenge. By conducting world-class science in the Antarctic, BAS is making a significant contribution to meeting this challenge.

SEANA

Global shipping is undergoing significant changes. In January 2020 the maximum sulphur emission by ships in international waters will reduce from 3.5% to 0.5% by mass, as a result of …

North Sea Methane

Offshore gas fields worldwide are major sources of methane emissions. Developing reliable methods to locate emissions and pinpoint sources is critical for quantifying the volume of methane emissions from gas …

Schematic of atmospheric waves and the large-scale circulations they drive.

Whole Atmosphere Climate Change

The near-Earth space environment is host to an increasing amount of advanced, satellite-based technology, used for both commercial and scientific purposes. To safeguard this technology and ensure that we can …

Percussive Rapid Access Isotope Drill

The ice sheets of Antarctica can be several kilometres thick, and contain precious information about the past climate. However, the bottoms of the ice sheets are melting, erasing this information. …

Larsen-C Benthos

On 12 July 2017, the Larsen-C Ice Shelf calved one of the largest iceberg originating from the Antarctic Peninsula ever recorded. As iceberg A68 moves north, it  leaves behind an …

Artificial Intelligence Lab

The BAS Artificial Intelligence Lab (or ‘BAS AI Lab‘) aims to foster the application of various machine learning (and adjacent) techniques to the rapidly growing, complex, and heterogeneous body of …

Southern Ocean Carbon

The Southern Ocean is one of the most important and poorly understood components of the global carbon cycle that profoundly shapes Earth’s climate. It is the primary hot spot for …

SubICE – Sub-Antarctic Ice Coring Expedition

The Sub-Antarctic – ice coring expedition (SubICE), part of the international Antarctic Circumnavigation Expedition (ACE), successfully drilled several shallow ice cores, from five of the remote and globally significant sub-Antarctic …

Methane Observations and Yearly Assessments

Methane is one of the most important greenhouse gases in the atmosphere, and changes in its concentration could have major influences on the Earth’s climate. Measurements made around the world …

Beyond Epica

A decade ago, the European EPICA project completed drilling a deep ice core at Dome C, revealing the close link between climate and atmospheric greenhouse gases over the past 800,000 …

UKESM logo

UKESM-BAS

Reliable projections of the Earth’s climate are at the heart of scientific support for international efforts to address global change. There is increasing recognition that reliable projections require that physical …

Meteorology and Ozone Monitoring

Long-term meteorological and ozone observations and data help determine the causes of climate change in the polar regions. Meteorology Meteorological observations are made regularly throughout the day at Halley and …

Boaty McBoatface (Autosub Long Range) during its first Antarctic deployment into the Weddell Sea off RRS James Clark Ross

Dynamics of the Orkney Passage Outflow (DynOPO)

Dynamics of the Orkney Passage Outflow (DynOPO) is a collaboration between BAS, the University of Southampton and the National Oceanography Centre (NOC). The project aims to investigate the flow of …

Weddell Sea ice sheet and climate

In the south of the Weddell Sea lies the Ronne and Filchner Ice Shelves. During the coldest part of the last glacial period about 25,000 years ago, the ice in …

The role of Antarctic sea-ice in global climate

Sea-ice is frequently cited as a likely driver and propagator of abrupt climate change because of the rapid and far-reaching impact of its feedbacks. However, numerical climate models are still …

Climate and Ice during the Last Interglacial

During the Last Interglacial (129-116 thousand years ago, ka) CO2 and global temperature were both higher than they were before human industrialisation. By examining Last Interglacial climate, we thus gain …

Antarctic Climate over the last millennia

The Antarctic Peninsula and West Antarctica have warmed dramatically in recent decades, with some climate records indicating that these are among the most rapidly warming regions on Earth. The Antarctic …

Impacts of Ocean Acidification on Sea-Surface

  In order to assess the impact of anthropogenic carbon dioxide (CO2) on the oceans today we are investigating the effect of decreasing upper ocean pH on calcifying zooplankton. Pteropods, …

Arctic marine geophysics

This research focuses on investigating the glacial histories of Arctic ice sheets and ice caps using the marine geological record preserved on continental margins. By reconstructing past ice sheets, their …

Filchner Ice Shelf System, Antarctica

Understanding the contribution that polar ice sheets make to global sea-level rise is recognised internationally as urgent.  The mission of this five-year project is to capture new observations and data …

ICE-ARC

physicists, chemists, biologists, economists, and sociologists from 21 institutes in 11 countries across Europe assess the rapid retreat and collapse of Arctic sea-ice cover

ISOL-ICE

PI: Markus M. Frey Co-I’s: X. Yang, R. Mulvaney NERC Grant: NE/N011813/1 The ozone layer shields all land-based life forms from harmful ultraviolet radiation; and indirectly influences the climate at …

EU-PolarNet

A strategic framework to connect science and society

Sea-level rise science briefing

Sea-level rise

21 May, 2019

Why is sea-level rise important? Sea-level rise increases the frequency and severity of storm surges and coastal flooding, causing serious damage to critical infrastructure and leading to the displacement of …

Antarctica and climate change

1 April, 2017

According to the IPCC fifth assessment report, it is extremely likely (95-100% confidence) that human activities have been the dominant driver of global climate change since the mid-20th century. Antarctica, …

Ozone Hole briefing thumbnail

The Ozone Hole

1 April, 2017

It’s over 30 years since the discovery of the Ozone Hole drew world attention to the impact of human activity on the global environment. Why is the ozone layer important? …

Sea ice at both poles

17 March, 2017

What’s new about sea-ice data? Record low monthly sea-ice extents were observed in the Arctic in January, February, April, May, June, October, and November 2016, and then further records were …

Ice cores and climate change

1 March, 2014

Slices of ice core, drilled from the depths of the Earth’s ice sheets, reveal details of the planet’s past climate. Introduction Ice cores are cylinders of ice drilled out of …

Record warming at the South Pole

29 June, 2020

The South Pole has warmed at over three times the global rate since 1989, according to a paper published in Nature Climate Change today (29 June 2020). This warming period was …

New briefing paper on Arctic change

25 June, 2020

BAS researchers have contributed to a new briefing paper about the Arctic published this week (25 June 2020). Working with a team at the Grantham Institute at Imperial College London, …

Antarctic sea ice loss explained in new study

17 June, 2020

Scientists have discovered that summer sea ice in the Weddell Sea area of Antarctica has decreased by one million square kilometres – an area twice the size of Spain – …

Migratory secrets of recovering whale species

20 May, 2020

Scientists have discovered where a whale species that feeds around the sub-Antarctic island of South Georgia breeds during the winter months. This understanding of where the animals migrate from will …

Drilling projects set to break new ground

29 April, 2020

Two new research projects – in partnership with British Antarctic Survey engineers –  will drill deeper than ever before in Antarctica and in space. The first project, called INCISED, is …

Traces of rainforests found in West Antarctica

1 April, 2020

An international team of researchers has provided a new and unprecedented perspective on the climate history of Antarctica. From a sediment core collected from the seafloor in West Antarctica, they …

Photo of a Sei Whale in the ocean

Stranded whales detected from space

17 October, 2019

A new technique for analysing satellite images may help scientists detect and count stranded whales from space. Researchers tested a new detection method using Very High Resolution (VHR) satellite images …

New mission for 1.5 million year climate record

9 April, 2019

This week a team of European researchers announces its plans for an ambitious mission to find the oldest ice on Earth (9 April 2019).  Antarctica’s ice has the potential to …

Study shows melting ice sheets will disrupt climate

7 February, 2019

Water entering the oceans from melting ice sheets could cause extreme weather and a change in ocean circulation not currently accounted for in global climate policies, a new study published …

Discovery of high geothermal heat at South Pole

14 November, 2018

Scientists have discovered an area near the South Pole where the base of the Antarctic Ice Sheet is melting unexpectedly quickly. Using radar to look through three km of ice, …

Prestigious award for BAS early career scientist

6 November, 2018

Congratulations to Dr Emilie Capron who has been awarded the prestigious Early Career Scientist Award of the International Union of Geodesy and Geophysics (IUGG). Dr Capron is a palaeoclimatologist at British …

Giant West Antarctic iceberg disintegrates

29 November, 2017

An animation of the giant iceberg that calved off the Pine Island Glacier in West Antarctica just over two months ago shows an unexpected break up. Satellite images revealed a …

Study sheds new light on krill larvae survival

14 November, 2017

An international study involving British Antarctic Survey (BAS) scientists has shed light on how the larvae of Antarctic krill – small shrimp-like crustaceans – use sea ice to ensure their …

Sun Pillar and Halo

FEATURED PAPER: Temperature change in Sichuan

13 November, 2017

The Sichuan basin is one of the most densely populated regions of China. Along with insufficient arable land and economic underdevelopments, this region is particularly vulnerable to climate-related stresses. Improving …

Meltwater pools on Larsen C ice shelf in Antarctica

New Antarctic heat map reveals sub-ice hotspots

13 November, 2017

An international team of scientists, led by British Antarctic Survey (BAS), has produced a new map showing how much heat from the Earth’s interior is reaching the base of the …

BAS scientists at 2017 COP23 climate event in Bonn

8 November, 2017

This week (10-11 November) leading scientists and experts from EU-funded research programmes engage with political leaders from the Pacific Ocean and the Arctic to examine the economic and social consequences …

Large iceberg breaks off Pine Island Glacier

27 September, 2017

Latest satellite images reveal a new 100-square-mile iceberg emerging from Antarctica’s Pine Island Glacier. The calving event did not come as a complete surprise, but is a troubling sign with …

Arctic sea ice at minimum extent for 2017

25 September, 2017

Arctic sea ice extent has likely reached its minimum extent for the year, at 4.64 million square kilometers (1.79 million square miles) on September 13, 2017, according to a team …

Huge Antarctic iceberg finally breaks free

12 July, 2017

After months of ‘hanging by a thread’ a vast iceberg the size of Norfolk has finally broken off Antarctica’s Larsen C Ice Shelf.  Around 30 metres of this 190m thick …

UK scientists to explore Changing Arctic Ocean

3 July, 2017

A new £10 million research programme to investigate how the Arctic Ocean is changing kicked off last week (Friday 30 June) with its first research expedition to the Barents Sea. …

Signy research station

Signy Island is hottest place in the Antarctic

1 March, 2017

A World Meteorological Organization (WMO) committee of experts announces this week (Wed 1 March) new records for the highest temperatures recorded in the Antarctic Region. The results are part of …

Rifting in Larsen B Ice Shelf before its breakup in 2001

New footage shows crack in Larsen C Ice Shelf

21 February, 2017

British Antarctic Survey (BAS) recently captured this video footage of a huge crack in the Larsen C Ice Shelf, on the Antarctic Peninsula. Currently a huge iceberg, roughly the size …

Antarctic sea ice extent lowest on record

16 February, 2017

This year the extent of summer sea ice in the Antarctic is the lowest on record. The Antarctic sea ice minimum marks the day – typically towards end of February …

Scientists gather for urgent meeting on Arctic change

18 January, 2017

Leading scientists gather at Davos today (18 January), with Al Gore and Christiana Figueres, for an urgent meeting on Arctic change. Growing concern prompts ‘Arctic Basecamp’ at World Economic Forum …

ANTARCTIC BLOG: Working on the Polar Plateau

15 January, 2017

A new blog post from a team comprising polar atmosphere and ice chemist Holly Winton, analytical chemist Rebecca Tuckwell and atmospheric and glaciochemist Markus Frey who are working on the …

Arctic Basecamp will move to Davos

21 December, 2016

Science Summit will call on global leaders for immediate action on the Arctic A group of leading scientists have announced an Arctic Science Summit that will take place in Davos, …

Quest begins for oldest ice on Earth

14 November, 2016

First phase of project to collect 1.5 million years of climate data in Antarctica A team of European scientists heads to East Antarctica this month to locate the oldest ice …

Sea smoke early morning off the Ronne Ice Shelf

FEATURED PAPER: Sea-ice reduction

18 October, 2016

A team of British climate scientists comparing today’s environment with the warm period before the last ice age has discovered a 65% reduction of Antarctic sea ice around 128,000 years …

A recent pause in Antarctic Peninsula warming

20 July, 2016

The rapid warming of the Antarctic Peninsula, which occurred from the early-1950s to the late 1990s, has paused. Stabilisation of the ozone hole along with natural climate variability were significant in bringing about the change. Together these influences have now caused the northern part of the peninsula to enter a temporary cooling phase. Temperatures remain higher than measured during the middle of the 20th Century and glacial retreat is still taking place. However, scientists predict that if greenhouse gas concentrations continue to rise at the current rate, temperatures will increase across the Antarctic Peninsula by several degrees Centigrade by the end of this century.

Ocean warming primary cause of glacier retreat

14 July, 2016

A new study has found for the first time that ocean warming is the primary cause of retreat of glaciers on the Antarctic Peninsula. The Peninsula is one of the largest current contributors to sea-level rise and this new finding will enable researchers to make better predictions of ice loss from this region.

Sea ice breaking up in the summer. Taken from an aircraft en-route from Halley to George von Neumayer Station, close to the coastline north west of Halley.

Wind-blown Antarctic sea ice helps drive ocean circulation

27 June, 2016

Antarctic sea ice is constantly on the move as powerful winds blow it away from the coast and out toward the open ocean. A new study published today in the journal Nature Geoscience (Monday 27 June) shows how that ice migration may be more important for the global ocean circulation than anyone realized.

Carbon dioxide level breached at Halley VI

16 June, 2016

Levels of the greenhouse gas carbon dioxide (CO2) in the atmosphere – which is the leading driver of recent climate change – have reached a milestone at British Antarctic Survey’s …

NEWS STORY: Lake drainage affected climate

17 February, 2016

The catastrophic release of fresh water from a vast South American lake at the end of the last Ice Age was significant enough to change circulation in the Pacific Ocean …

Rafted sea ice and pressure ridges in the Weddell Sea Sea, Antarctica

FEATURED PAPER: Improving climate predictions

19 November, 2015

The Earth’s climate was warmer than today by at least 1°C during the Last Interglacial (between 129,000 and 116,000 years ago). Thus, the Last Interglacial represents an invaluable case study …

PRESS RELEASE: West Antarctica snow accumulation

4 November, 2015

West Antarctic coastal snow accumulation rose 30 percent during 20th century Annual snow accumulation on West Antarctica’s coastal ice sheet increased dramatically during the 20th century, according to a new …

ship

NEWS STORY: New polar ship bidder selected

12 October, 2015

Government announces preferred bidder to build new polar ship Minister of State for Universities and Science, Jo Johnson announced today that the preferred bidder to build a new polar research …

Tabular iceberg in the Weddell Sea

NEWS STORY: Arctic sea ice 2015

17 September, 2015

Arctic sea ice 2015 On September 11, the National Snow and Ice Data Centre (NSIDC) reported that Arctic sea ice reached its likely minimum extent for 2015. The minimum ice …

NEWS STORY: Polar ice cores reveal volcanic eruptions

8 July, 2015

Polar ice cores reveal volcanic eruptions that changed human history Researchers find new evidence that large eruptions were responsible for cold temperature extremes recorded since early Roman times A freshly …

NEWS STORY: Frozen in to the Arctic winter

10 March, 2015

Extreme science in extreme conditions: frozen in to the Arctic winter Dr Markus Frey, a British Antarctic Survey (BAS) ice and atmospheric scientist, is living and working aboard the Norwegian …

Ice-spy in the Antarctic

NEWS STORY: Events in Cambridge and Manchester

6 February, 2015

‘Ice-Spy in the Antarctic’ Thursday 19 February 11.00 – 11:25 14:00 – 14:25 Cambridge Science Centre, Jesus Lane, Cambridge How do you track the ice that floats in the polar …

The AUV 'seabed' being deployed from RRS James Clark Ross

PRESS RELEASE: Mapping the ice from below

24 November, 2014

Underwater robot sheds new light on Antarctic sea ice The first detailed, high-resolution 3-D maps of Antarctic sea ice have been developed using an underwater robot. Scientists from the UK, …

Rafted sea ice and pressure ridges in the Weddell Sea Sea, Antarctica

NEWS STORY: Sea ice minimum explained

18 September, 2014

Arctic sea ice summer minimum 2014: A scientific perspective The Arctic sea ice minimum marks the day – typically in September – when sea ice reaches its smallest extent at …

NEWS STORY: Changes in winds in south

12 May, 2014

Ocean winds keep Australia dry and Antarctica cold New research explains why Antarctica is not warming as much as other continents, and why southern Australia is recording more droughts. Analysis …

NEWS STORY: Unlocking clues to past climate

1 May, 2014

Earth’s last warm phase exposed Analysis of data collected from ice cores and marine sediment cores in both polar regions has given scientists a clearer picture of how the Earth’s …

NEWS STORY: Arctic sea ice trends

13 February, 2014

British Antarctic Survey coordinates Arctic sea-ice investigation Arctic sea-ice cover is retreating at an unprecedented rate. Scientists fear we may see the complete loss of sea ice during the summer …

PRESS RELEASE: Antarctic emperor penguins

8 January, 2014

Antarctic emperor penguins may be adapting to warmer temperatures A new study of four Antarctic emperor penguin colonies suggest that unexpected breeding behaviour may be a sign that the birds …

NEWS STORY: World’s coldest place identified

12 December, 2013

Scientists working at the United States National Snow and Ice Data Center (NSIDC) said this week they have identified the coldest place on Earth using satellite observations of surface temperature. …

NEWS STORY: Climate records from ice cores

5 December, 2013

New ice core record shows climate variability in West Antarctica A 308-year ice core record provides new data on climate variability in coastal West Antarctica and shows that a clear …

Icebergs calving from the edge of the Brunt Ice shelf, Weddell Sea.

NEWS STORY: IPCC climate report published today

27 September, 2013

The Fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC) is published today. The report entitled Climate Change 2013: The Physical Science Basis, presents a synthesis of …

NEWS STORY: Storm events link identified

17 April, 2013

Jet stream influences extreme storms A new study of Europe’s extreme storm events reveals that they often occur near  the jet stream – the fast flowing air currents that flow …

PRESS RELEASE: Summer melt season extending

28 March, 2013

Summer melt season is getting longer on the Antarctic Peninsula, new data show New research from the Antarctic Peninsula shows that the summer melt season has been getting longer over …

NEWS STORY: Greenland ice shows past trends

23 January, 2013

Greenland ice core reveals warm past temperatures British Antarctic Survey scientists have contributed to a new study published in Nature (Thursday 24 January) that provides surprising details on changes in …

PRESS RELEASE: Antarctica’s climate timeline

22 August, 2012

New climate history adds to understanding of recent Antarctic Peninsula warming Results published this week by a team of polar scientists from Britain, Australia and France adds a new dimension …

PRESS RELEASE: Air flows explain record low

11 January, 2010

New research sheds light on Earth”s coldest temperatures Results from the first detailed analysis of the lowest ever temperature recorded on the Earth’s surface can explain why it got so …

PRESS RELEASE: Warmer spells detected in ice cores

18 November, 2009

Mysteriously warm times in Antarctica A new study of Antarctica’s past climate reveals that temperatures during the warm periods between ice ages (interglacials) may have been higher than previously thought. …