BIOPOLE ARC0011
BIOPOLE is funded by the Natural Environment Research Council with a remit to examine the sensitivity of polar ecosystems to rapid environmental change, specifically in terms of their ability to sequester carbon and to deliver the polar nutrients that keeps the rest of the World’s oceans healthy and productive. The programme involves over 50 UK scientists from 5 research institutes with a large number of international project partners and stakeholders. Further details on the project can be found at https://biopole.ac.uk/
Below, we address questions outlined in Terms of Reference where we have specific expertise within our team. For sections where we have provided a detailed response, we have first provided a summary of the evidence.
1. The Arctic environment
What are the consequences for the UK of the observed climatic and environmental changes in the Arctic?
Summary: There is still no consensus on how rapid changes occurring in the Arctic may affect atmosphere and ocean in the North Atlantic and impact UK extreme weather, however potential disruptive changes arising from these rapid changes in the Arctic can be severe. Decline of ocean-to-European shelf exchange and increased ocean stratification in the shelf areas driven by changes in Arctic-North Atlantic oceanic connections can impact ocean productivity with effect on UK fisheries and sustainable marine management.
Changes in the large-scale ocean circulation influence the transport of biogeochemical tracers in the North Sea and on the North-Western European shelf. The North Sea receives the Atlantic waters brought by the Fair Isle Current, the East Shetland Current, and the Western Norwegian Trench Current, whereas the sea exports shelf waters, mixed with the Baltic outflow through the Norwegian Trench. Climate change could affect the circulation, with slowdown of all currents contributing to the exchange with the North Atlantic (Holt et al., 2018), although the projected changes vary between models (Tinker et al., 2016). The main driver for this change is thought to be an ongoing freshening and increase in stratification in the Faeroe-Shetland channel and within the North Atlantic current, linked to sea ice loss. The North Atlantic waters are the major source of nutrients for the Northern North Sea (Vermaat et al., 2008), and decline of marine productivity is predicted by the models in the eastern part of the Northern North Sea, but partly compensated by the productivity increase in the Western North Sea, fed by fresher and nutrient-rich inflow from the Southern North Sea and the Baltic Sea (Holt et al., 2018). These changes impact oxygen and the carbonate chemistry in the North Sea.
What are the observable realities of ice decline for biodiversity, air quality, sea level changes, permafrost melt and levels of methane?
Summary: The changes in the Arctic have been dramatic during the last and current centuries and are the fastest presently occurring worldwide. Recently, the environmental trajectories of the many components of the Arctic system show potential tipping points and may become irreversible. More of the previously dormant or unconsidered processes are kicking in and are now contributing to the acceleration of global climate change. Their impact on Arctic and global climates are likely to be from moderate to strong. Some examples of these new-emerging feedbacks are given below.
Example 1 - Contribution of the Arctic to global warming: Most of the global warming arises from the greenhouse gases such as CO2 (carbon dioxide), CH4 (methane) and N2O (nitrous oxide) (COMFORT, 2023). Anthropogenic CO2 emissions primarily come from fossil fuel burning, deforestation and cement manufacturing (Friedlingstein et al., 2022). Methane is the second most potent greenhouse gas (GHG) after CO2 with >28 times larger warming potential. CH4 emissions are due to permafrost-thaw, livestock farming, rice cultivation, waste management, as well as biomass burning. In 2020, atmospheric CH4 concentration increased at rate not seen in the past four decades (Saunois et al., 2020), almost twice as fast as that of CO2. Anthropogenic and natural CO2 emissions and anthropogenic CH4 emissions are reasonably constrained (e.g., Fox-Kemper et al., 2021), however, the magnitude, areal extent, causes and timing of natural CH4 emissions (terrestrial and marine permafrost, wetlands, freshwater, and marine gas hydrates and mega-seeps) have large uncertainties with conflicting estimates from different methods (Saunois et al., 2020). In addition, studies on methane release from laboratory soil incubations and actual methane release from the Siberian Arctic shelves have widened rather than narrowed the uncertainty when determining emissions pathways (Shakhova et al., 2013; Thornton et al., 2016; IPCC 2019). The East Siberian Arctic shelves are experiencing among the highest rates of climate warming and have vast yet poorly quantified storage of carbon, which can be mobilised by the changing climate. The East Siberian Arctic shelves are estimated to host 60-80% of the world’s marine permafrost carbon and 75% of the shallow shelf hydrates. This frozen sediment complex caps the “Siberian-Arctic Petroleum Megapool”, a huge reservoir of natural gas and there is potential for emission of this carbon pool to the atmosphere. Studies in the Laptev Sea mega-seeps has found that this mobilization has already started (Steinbach et al., 2021). Marine permafrost has reached thawing temperatures in recent decades with the thaw horizon in marine permafrost deepening more than ten times faster than for land permafrost (Shakhova et al., 2017). In summary, the IPCC reports stress the massive importance of different Arctic CH4 pools, yet there is huge uncertainty regarding their composition, inventories and functioning. Improving knowledge of these systems and transferring this knowledge into models, so that we can make evidence-based predictions of future behaviour, is required to understand the present system and to reach a point where we can make high confidence predictions of future CH4 emissions to the atmosphere from these key natural sources and quantify their future role in the global carbon system.
Example 2 - Arctic coastal erosion: Erosion of the Arctic coastline poses a threat to infrastructure, coastal settlements and the wider marine environment. Arctic coastal erosion rates are an order of magnitude higher than those in the rest of the world and have been increasing for the last few decades, reaching 25-50 m per year for the hotspots in Siberia and Alaska (Terhaar et al., 2021; Nielsen et al., 2022). The reduction of the compact sea ice in the Arctic shelf seas allows higher waves to propagate towards the shore (Irrgang et al., 2022), causing coastal collapse. The Siberian coastline is presently transitioning from a lower to a higher coastal erosion regime because of the regional sea ice decline. The observed coastal retreat already has reached 400-1100 m over the last six decades in hot spots in the Beaufort and Laptev seas (Grigoriev et al., 2019). The currently observed erosion and corresponding build-up coastal sediments are increasing in hotspots such as Alaska and Siberia, with erosion dominating over build-up (Philipp et al., 2022). The kilometre-scale coastal retreat, observed since the 1960s near several settlements in Alaska, Canadian Northern Territories, and Siberia, is projected to continue (Grigoriev et al., 2019; AMAP, 2021). This, along with the averaged projected pan-Arctic coastal collapse of ~200 m by 2100 (Nielsen et al., 2022), poses a serious socio-economic problem for local populations, but also more widely raising safety and communication concerns (Clare et al., 2022; State of the Cryosphere Report, 2022).
Example 3 - Influx of nutrients from land to sea: Terrigenous fluxes of nutrients can support about one third of the Arctic Net Primary Production (NPP) (e.g., Terhaar et al., 2021), with the main increase in the NPP being in the coastal areas and on the Arctic shelves. The current trend in the riverine nitrates is positive in the American rivers and negative in the Siberia (ArcticGro database, https://arcticgreatrivers.org/; Zolkos et al., 2022). The Arctic Ocean is particularly vulnerable to deoxygenation due to the continuous increase in primary production (e.g., Lewis et al., 2020) caused by the increased terrigenous inputs of both organic and inorganic carbon and nutrients from rivers (Holmes et al., 2012) and permafrost thaw (inland and coastal erosion) (Fritz et al., 2017; Mann et al., 2022).
Example 4 - Ocean acidification: Coupled Earth system models predict that global accumulation of anthropogenic CO2 in the ocean will reduce mean sea surface pH (Bopp et al., 2013; Kwiatkowski et al., 2020, COMFORT, 2023). Effects of ocean acidification tends to increase in the Arctic Ocean where the combined impact of sea ice loss and low temperatures enhance acidification. Already there have been ecosystems impacts with corrosion reported on the shells of calcifying organisms (Niemi et al 2021) and over 20% of the western Arctic Ocean is now corrosive to certain types of calcifying organisms (Qi et al 2017). It is predicted that all mesopelagic layers in the Arctic Ocean will be corrosive to these organisms by the end of this century (Terhaar et al. 2020).
Example 5: Deoxygenation: The Arctic Ocean is a disproportional contributor to global ocean deoxygenation, driving approximately 8% of the variability in global ocean O2 content while occupying just 1% of total ocean volume (Schmidtko et al., 2017; COMFORT, 2023). The deep Arctic Ocean may experience deoxygenation within the current century (Bindoff et al., 2019) even though coastal areas and continental shelf seas in the Arctic may become more oxygenated (Gong et al., 2021). Factors contributing to deoxygenation in the deep ocean are (i) enhanced stratification due to surface freshening in the Pacific-influenced Amerasian basin (Solomon et al., 2021); (ii) increased heating from advective Atlantic-influenced sources (Polyakov et al., 2017); (iii) increased primary production (e.g., Lewis et al., 2020); (iv) terrigenous inputs of both organic and inorganic carbon and nutrients from rivers (Holmes et al., 2012); and (v) permafrost thaw and erosion (Fritz et al., 2017; Mann et al., 2022).
Example 6: Changing ocean carbon storage via [and climate mitigation potential of] the ‘lipid pump’: Unicellular primary producers (phytoplankton) in the Arctic Ocean convert atmospheric CO2 and H2O into living biomass through photosynthesis. Small Arctic animals called zooplankton consume this biomass and use it to produce and store massive fat (lipid) deposits during the productive spring and summer months. The key species of lipid-storing Arctic zooplankton migrate into the deep ocean as soon as they have acquired enough fat to survive the harsh, unproductive winter months. At depths greater than 1000 m, these animals survive for 6-9 months without feeding by slowly burning off their fat reserves, and in doing so, produce and release dissolved CO2. The scale of the populations of these animals is so vast that the amount of CO2 they release at depth, where it is trapped away from the atmosphere for decades or even centuries, is so large that it plays an important role in the global carbon cycle and climate regulation (Jonasdottir et al., 2015; Boyd et al., 2019). This so-called ‘lipid pump’ is dependent upon 1) the active populations of zooplankton in surface waters coinciding with massive blooms of phytoplankton, and 2) conditions at depth being sufficiently cold to supress zooplankton metabolic rates for long enough to allow them to survive winter without feeding. On-going warming in the Arctic Ocean, and the concomitant melting of sea ice, is changing the physical, chemical and biological conditions of the Arctic Ocean, influencing the spatial and temporal distribution and magnitude of primary production. The consequences of these changes for the scale of the ‘lipid pump’ and its role in regulating global climate, are currently unknown. On-going warming is also increasing the thermal energy that penetrates the ocean’s interior, increasing the metabolic rates of zooplankton and reducing the time that lipid-storing animals are able to survive. This adds further uncertainty to our knowledge of how biologically-mediated carbon storage in the Arctic Ocean will be affected by climate change.
Example 7: 'Atlantification’ of the Arctic: Warming of the Arctic Ocean is not uniform, but amplified in certain regions, such as where there is enhanced inflow of warm Atlantic water into the Eurasian sector of the Arctic Ocean, termed ‘‘Atlantification’’ (Arthun et al. 2012). As these warmer waters further encroach, they bring with them boreal Atlantic species that alter Arctic community structure and affect how food-webs function (Kortsch et al. 2015; Polyakov et al. 2020). The high-latitude impacts of these inflows have strengthened in recent decades owing to climate change (Ingvaldsen et al 2021). Over that time, strong salinification and potentially altered vertical fluxes have reduced stratification in the upper Barents Sea and Eurasian Basin. These observed changes represent a shift towards conditions that resemble those observed in lower latitude regions — that is, warmer water with weaker vertical stratification. This Atlantification closely relates progression of anomalies from the Atlantic sector of the sub-Arctic seas into polar latitudes. One of the consequences is greater heat exchange between ocean and atmosphere in the Arctic.
Atlantification has substantial impacts on Arctic ecosystems. Arctic biota is characterized by adaptations to ice cover, low temperatures and strong seasonality, precluding colonization by species from lower latitudes. A change towards more-Atlantic conditions has promoted invasion by the lower-latitude (termed ‘boreal’) species, as documented for plankton, pelagic and demersal fish, sea mammals and seabirds. This modifies Arctic biodiversity, community structure, food web organization and ecosystem functioning with implications for ecosystem vulnerability to increasing human activities in the Arctic.
According to Ingvaldsen et al. (2021), the impacts of Atlantification on the Arctic climate and ecosystems have primarily been exhibited since ~2000. Rapid and unforeseen environmental changes that can occur if Atlantification accelerates challenge abilities to predict which populations will be able to cope. Predictability of the rate and direction of ecological change is further challenged by the pulsed character of Atlantification, triggering sudden bursts of ecological responses, and by the complex nature of the higher order effects mediated by ecological interactions, hence the urgent need for greater scientific understanding of the consequences of the Atlantification of the Arctic.
2. The UK’s Arctic interests
What use do UK businesses (oil, minerals, fisheries, tourism, shipping) make of the Arctic as a whole, and how may that use develop in coming years, especially as the ice recedes?
Summary: At present UK businesses do not have a substantial involvement in the Arctic areas, although this may change with shifting the industrial foci towards the more technology-driven, advanced green and nature-based industries where the UK could show leadership. Strategic planning in support of high-tech investments requires co-design between the applied technological and environmental research and industry, supported by a dedicated long-term funding commitment.
Shipping: The prospects of UK being a leading actor in the Arctic shipping are not strong due to competition from the existing well-developed Arctic maritime industries in Canada, Finland, Norway, USA, and Russia. The cargo flow through the Arctic seas is still small compared to the global cargo volume turnaround and experiences large fluctuations due to economic and political factors. Even with sea ice retreat, the harsh and dangerous sailing conditions in the Arctic will remain. This will increase the need for real time environmental information for both the shipping and the insurance industries. This may present opportunities in developing telecommunication, satellite data streams, and in sea rescue/clean up technologies, where the UK industries can play a leading role.
Reduced sea ice cover changes shipping routes and affects maritime operations, as well as fisheries. (Protection of the Arctic Marine Environment (PAME) Arctic Shipping Status Report (ASSR) #1, 2020; Todorov, 2021), and raises the possibility of previously sea-ice-covered regions providing shorter accessible routes for shipping. However, the shipping intensity will vary with economic conditions (with environmental conditions acting as a moderating factor), and shipping transits and cargo volumes can fluctuate substantially from year to year as a result (e.g., Aksenov et al., 2017). Emerging hazards from changing environmental and navigational conditions in the Arctic (for the Polar Code Area (PCA) definition – see International Maritime Organisation (IMO) Resolution MEPC.265(68), 2022) are multi-faceted and often create compound risks. Awareness of the new emerging combined hazards, such as sea ice and wave impacts, spray deposition/icing and bergy-bit collisions should all be considered as they have wide relevance to many maritime industries (e.g., Aksenov et al., 2022). Numbers of ships entering the PCA are increasing, and more ships are present in the PCA. Larger vessels (>1000 GT) with larger drafts, and an expansion in regional routes and a 75% increase in distances may lead to more grounding and accidents, more work on harbours and dragging of navigational channels. However, the main increase in the PCA voyages is due to fishing vessels, specifically in the Barents Sea, but also along the Siberian and Alaskan coasts (41% of all ships sailing are fishing vessels), therefore more accidents from maritime code violation, such as grounding, ship-to-ship and ship-to-offshore/shore structures collisions are expected, with potential pollution of the ocean with debris and oil.
Telecommunication networks: The global economy relies on uninterrupted use of a seafloor network of >400 fibre-optic cable systems that extend 1.8 million km across the global ocean. Today, more than 95% of all digital data traffic worldwide and $trillions/day in financial transactions are transferred via this vital network. Consequently, subsea cables are considered critical infrastructure. The Arctic is not presently a well-developed region for telecommunication cable routes. To date, only two regional subsea cables operate inside the Arctic Circle, latitude 66°34’N – the link between Svalbard and mainland Norway and a recently completed system along the north Alaskan continental margin. However, the loss of sea ice cover driven by climate change may open new opportunities and major trans-Arctic Ocean subsea cables are planned and range from preliminary proposals to fully funded projects scheduled for completion in 2022–2023, including the Far North Fibre project, aimed at the first pan-Arctic subsea cable system connecting Europe and Asia via North America to be operational by the 2026 (https://www.capacitymedia.com/article/2bj7k752flnoa8hi3rf28/news/far-north-fiber-commences-cable-route-study). At the same time, new hazards for telecommunications are likely to be complex in high latitude regions, including the direct impacts of sea ice and icebergs, as well as combined impacts from waves, ocean currents and land-coastal processes, including inundation of cable landing stations by storm tides (e.g., Muis et al., 2016; Stephenson et al., 2011). The coastal zone is liable to become more vulnerable due to increased exposure to open-ocean storms, which may become more frequent and intense (Parkinson and Comiso, 2013; Simmonds and Keay, 2009). It is unclear if cables on the continental shelf and slope will be exposed to more seabed scouring by icebergs, although the number of observed icebergs in the polar oceans appears to have been increasing since the 1990s. A century of observations of icebergs from west Greenland reveal strong interannual and decadal variability but with a period of pronounced increased discharge in 1990–1999, two to three times more than in previous decades back to 1900 (Bigg et al., 2014). Other industrial activities may change in that region (e.g., fishing, shipping, resource exploitation, construction of shore terminals and other structures), which should be considered at the earliest stages of planning for new communications and cable systems (Wopschall and Michels, 2013).
Tourism: “Nature adventure” tourism can provide a moderate niche for the UK touring industry. This will require access to the Arctic EEZs and co-operation with the Arctic Circle States.
What are the risks to the climate and the environment of current business trends, especially extractive industries, in the Arctic?
Summary: Contaminants are prevalent in the Arctic, transported from temperate regions by atmosphere and ocean, but also from the land by rivers flowing into the Arctic Ocean. Changes in the Arctic marine, atmospheric and hydrological terrestrial environment alter pathways of the contaminants through ecosystems and human populations. The full-scale impact is unknown, although recent data show that it is potentially large and increasing: for example, the Arctic Monitoring & Assessment Programme (AMAP) has added marine plastics and mercury to the list of threats to the Arctic.
The Arctic is a region of great natural and cultural value; however, it is under stress from human drivers, including climate change and anthropogenic contaminants. Many contaminants have been present at elevated levels in human and wildlife populations in the far north, primarily transported via long-range atmospheric transport, ocean currents, and rivers (Ma et al. 2018). Pollutants have been detected throughout the Arctic marine ecosystem but the extent of exposure to microplastic particles and subsequent bioaccumulation in marine systems is largely unknown (PAME, 2019).
Example 1 - Plastic pollution: Based on surveys of plastic macro-debris, more than 70% of plastics come from regional Arctic fishing activities (Bergman et al., 2017), although microplastic particles observed in surface and deeper waters of the Arctic Ocean are of a wide mix of polymers, likely from long range transport by ocean currents through Arctic ‘gateways’ from the Atlantic and North Pacific and from the discharge of Arctic rivers. Microplastics are an emerging contaminant in polar regions (Peeken et al. 2018; Botterell et al, 2022) and their presence in the Arctic has been identified as higher than in temperate marine locations (Barrows et al. 2018). The Arctic is in danger of becoming the “sixth world ocean garbage patch” (Tekman et al.2017; van Sebille et al. 2012). With rapid increases in contamination, the Arctic Ocean already contains higher microplastics concentrations than other world oceans (Barrows et al., 2018). Microplastics, frozen into the sea ice and fragmented by fluctuating temperatures and mechanical abrasion, can be transported across the Arctic Ocean and beyond. The Arctic Monitoring & Assessment Programme (AMAP) has added marine plastics and microplastics to their list of chemicals of emerging concern, declaring plastics as a threat to the Arctic, as they are persistent and are transported long distances with growing evidence that they can accumulate in lower trophic level marine organisms in the Arctic (Botterell et al., 2022).
Example 2 – Mercury pollution: Most mercury pollution is brought to the Arctic via long-range transport from lower latitudes by air and ocean pathways. Mercury is cycled in the environment, builds up in food chain, exposing wildlife and humans, especially Arctic Indigenous populations and local communities that rely on marine animals as part of a traditional diet. AMAP’s assessment (AMAP, 2021) shows that mercury from human activity continues to travel to the Arctic, with the global emissions of mercury from human activities having risen in recent years. Atmospheric levels of mercury appear to be decreasing in the Arctic, linked to lower emissions in regions closest to the Arctic.
3. The UK’s contribution to the Arctic through scientific research
What are the benefits for the UK of support for Arctic research activity?
The rapid and unprecedented environmental change in the Arctic will impact the UK. Now is the right time to support Arctic research to 1) understand the mechanisms of change, 2) monitor and the chemical, physical and biological consequences of these changes, and 3) develop tools to help mitigate the effects of these changes. All of these activities will underpin the legislation changes needed to minimise the impact on the UK.
Benefits to supporting Arctic research activity include:
What more could the UK do to improve or increase its contribution to Arctic science?
At present UK has little leadership in marine Arctic science, with the major programmes and infrastructure led by other (not always Arctic-bordering) countries. The UK must invest more in Arctic research if it is to increase its strategic influence in this region.
We propose the following:
How can future Arctic research in UK institutions be supported so as to maintain and enhance the UK’s leadership in Arctic science?
The UK is in a strong position to lead in policy-relevant Arctic research. Further strategic funding of existing UK assets would benefit Arctic research greatly:
We propose the following:
More immediately, we could leverage greater interest, awareness and funding through our hosting of the Arctic Science Summit Week in Edinburgh in 2024.
Has the UK’s departure from the EU had an impact on UK research in the Arctic? Has there been any impact on agreements on international cooperation, joint research projects and access to funding streams such as Horizon Europe?
There are a number of matters of concern with regards UK’s departure from the EU in terms of scientific cooperation which are affecting UK’s science capabilities in the Arctic.
April 2023
Literature cited
Arctic Monitoring and Assessment Programme (AMAP): Arctic Climate Change Update 2021: Key Trends and Impacts. Summary for Policy-makers. Arctic Monitoring and Assessment Programme (AMAP), Tromsø, Norway. 16 pp. https://www.amap.no/documents/download/6759/inline, 2021. |
Aksenov Y., and others: On the future navigability of Arctic sea routes: High-resolution projections of the Arctic Ocean and sea ice. Marine Policy, 75, 300-317. http://dx.doi.org/10.1016/j.marpol.2015.12.027, 2017. |
Aksenov, Y., and others. Safer operations in changing ice-covered seas: approaches and perspectives. In: IUTAM Symposium on Physics and Mechanics of Sea Ice. IUTAM Bookseries, vol. 39. Springer, Cham, pp. 241-260, https://doi.org/10.1007/978-3-030-80439-8_12, 2022. |
Årthun, M., T. Eldevik, L. Smedsrud, Ø. Skagseth, and R. Ingvaldsen. 2012. Quantifying the influence of Atlantic heat on Barents Sea ice variability and retreat. Journal of Climate 25: 4736–4743. https://doi.org/10.1175/JCLI-D-11-00466.1. Bacon, S., and others: Arctic Ocean boundary exchanges: A review. Oceanography, https://doi.org/10.5670/oceanog.2022.133, 2022. |
Barrows et al. (2018) Env. Pollut. 237: 275-84. |
Bergman et al. (2017) Mar. Poll. Bul. 125: 535. |
Bigg, G.R., and others: A century of variation in the dependence of Greenland. iceberg calving on ice sheet surface mass balance and regional climate change. Proc. R. Soc. A 470, 20130662. https://doi.org/10.1098/rspa.2013.0662, 2014. |
Bindoff, N. L., W.W.L. Cheung, J.G. Kairo, J. Arístegui, V.A. Guinder, R. Hallberg, N. Hilmi, N. Jiao, M.S. Karim, L. Levin, S. O’Donoghue, S.R. Purca Cuicapusa, B. Rinkevich, T. Suga, A. Tagliabue, a., and Williamson, P.: Changing Ocean, Marine Ecosystems, and Dependent Communities, in: IPCC Special Report on the Ocean and Cryosphere in a Changing Climate, edited by: H.-O. Pörtner, D. C. R., V. Masson-Delmotte, P. Zhai, M. Tignor, E. Poloczanska, K. Mintenbeck, A. Alegría, M. Nicolai, A. Okem, J. Petzold, B. Rama, N.M. Weyer, Cambridge University Press, Cambridge, UK and New York, NY, USA, 447–587, 10.1017/9781009157964.007, 2019. |
Bopp, L., Resplandy, L., Orr, J. C., Doney, S. C., Dunne, J. P., Gehlen, M., Halloran, P., Heinze, C., Ilyina, T., Séférian, R., Tjiputra, J., and Vichi, M.: Multiple stressors of ocean ecosystems in the 21st century: projections with CMIP5 models, Biogeosciences, 10, 6225-6245, 10.5194/bg-10-6225-2013, 2013. |
Boyd PW, Claustre H, Levy M, Siegel DA & Weber T. Multi-faceted particle pumps drive carbon sequestration in the ocean. Nature 568: 327–335 (2019) Botterell et al. (2022). STOTEN 831 :154886. |
Calderwood, C., & Ulmer, F. (2023). The Central Arctic Ocean fisheries moratorium: A rare example of the precautionary principle in fisheries management. Polar Record, 59, E1. doi:10.1017/S0032247422000389 |
Clare, M. A., and others: Climate change hotspots and implications for the global subsea telecommunications network, Earth-Science Reviews, 104296, https://doi.org/10.1016/j.earscirev.2022.104296, 2022. COMFORT Project: Our common future ocean in the Earth system – quantifying coupled cycles of carbon, oxygen, and nutrients for determining and achieving safe operating spaces with respect to tipping points, European Commission’s Horizon 2020 Research and Innovation Framework Programme Grant Agreement No: 820989. Project results updated 2023, https://cordis.europa.eu/project/id/820989, 2023. |
Fox-Kemper, B., and others: Ocean, Cryosphere and Sea Level Change. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 1211–1362, doi:10.1017/9781009157896.011, 2021. |
Friedlingstein, P., and others: Global Carbon Budget 2021, Earth Syst Sci Data, 14, 1917-2005, 10.5194/essd-14-1917-2022, 2022. |
Fritz, M., Vonk, J. E., and Lantuit, H.: Collapsing Arctic coastlines, Nature Climate Change, 7, 6-7, 10.1038/nclimate3188, 2017. |
Gong, H., Li, C., and Zhou, Y.: Emerging Global Ocean Deoxygenation Across the 21st Century, Geophysical Research Letters, 48, e2021GL095370, https://doi.org/10.1029/2021GL095370, 2021. |
Grigoriev, M. N.: Coastal retreat rates at the Laptev Sea key monitoring sites. PANGAEA, https://doi.org/10.1594/PANGAEA.905519, 2019. |
Holmes, R. M., an others: Seasonal and Annual Fluxes of Nutrients and Organic Matter from Large Rivers to the Arctic Ocean and Surrounding Seas, Estuaries and Coasts, 35, 369-382, 10.1007/s12237-011-9386-6, 2012. |
Holt, J., Polton, J., Huthnance, J., Wakelin, S., O'Dea, E., Harle, J., Yool, A., Artioli, Y., Blackford, J., Siddorn, J., and Inall, M.: Climate-Driven Change in the North Atlantic and Arctic Oceans Can Greatly Reduce the Circulation of the North Sea, Geophysical Research Letters, 45, 11827-11836, 10.1029/2018gl078878, 2018. |
IPCC, 2019: IPCC Special Report on the Ocean and Cryosphere in a Changing Climate [H.-O. Pörtner, D.C. Roberts, V. Masson-Delmotte, P. Zhai, M. Tignor, E. Poloczanska, K. Mintenbeck, A. Alegría, M. Nicolai, A. Okem, J. Petzold, B. Rama, N.M. Weyer (eds.)]. Cambridge University Press, Cambridge, UK and New York, NY, USA, 755 pp. https://doi.org/10.1017/9781009157964, 2019. |
Ingvaldsen, R. B., Assmann, K. M., Primicerio, R., Fossheim, M., Polyakov, I. V., & Dolgov, A. V. (2021). Physical manifestations and ecological implications of Arctic Atlantification. Nature Reviews Earth & Environment, 2(12), 874-889. Irrgang, A. M., and others: Drivers, dynamics and impacts of changing Arctic coasts. Nature Reviews Earth & Environment, 3(1), pp.39-1248 54. https://doi.org/10.1038/s43017-021-00232-1, 2022. |
Jónasdóttir SH, Visser AW, Richardson K and Heath MR (2015). Seasonal copepod lipid pump promotes carbon sequestration in the deep North Atlantic. PNAS 112 (39) 12122-12126. Kortsch, S., R. Primicerio, M. Fossheim, A.V. Dolgov, and M. Aschan. 2015. Climate change alters the structure of Arctic marine food webs due to poleward shifts of boreal generalists. Proceedings of the Royal Society B: Biological Sciences 282: 20151546. https://doi.org/10.1098/rspb.2015.1546. Kwiatkowski, L., Torres, O., Bopp, L., Aumont, O., Chamberlain, M., Christian, J. R., Dunne, J. P., Gehlen, M., Ilyina, T., John, J. G., Lenton, A., Li, H. M., Lovenduski, N. S., Orr, J. C., Palmieri, J., Santana-Falcon, Y., Schwinger, J., Seferian, R., Stock, C. A., Tagliabue, A., Takano, Y., Tjiputra, J., Toyama, K., Tsujino, H., Watanabe, M., Yamamoto, A., Yool, A., and Ziehn, T.: Twenty-first century ocean warming, acidification, deoxygenation, and upper-ocean nutrient and primary production decline from CMIP6 model projections, Biogeosciences, 17, 3439-3470, 10.5194/bg-17-3439-2020, 2020. Lewis, K. M., van Dijken, G. L., and Arrigo, K. R.: Changes in phytoplankton concentration now drive increased Arctic Ocean primary production, Science, 369, 198-202, doi:10.1126/science.aay8380, 2020. |
Ma et al (2018) Geophys. Res. Lett. 45: 12972. |
Mann, P. J., and others: Degrading permafrost river catchments and their impact on Arctic Ocean nearshore processes, Ambio, 51, 439-455, 10.1007/s13280-021-01666-z, 2022. |
Muis, S., and others: A global reanalysis of storm surges and extreme sea-levels. Nat. Commun. 7, 11969. https://doi.org/10.1038/ncomms11969, 2016. |
Nielsen, D. M., and others: Increase in Arctic coastal erosion and its sensitivity to warming in the twenty-first century, Nature Climate Change, 12, 263-+, 10.1038/s41558-022-01281-0, 2022. |
Niemi, A., Bednaršek, N., Michel, C., Feely, R. A., Williams, W., Azetsu-Scott, K., ... & Reist, J. D. (2021). Biological impact of ocean acidification in the Canadian Arctic: widespread severe pteropod shell dissolution in Amundsen Gulf. Frontiers in Marine Science, 8, 600184. |
PAME, Desktop Study on Marine Litter including Microplastics in the Arctic (May 2019). |
Parkinson, C.L., Comiso, J.C., 2013. On the 2012 record low Arctic sea ice cover: combined impact of preconditioning and an August storm. Geophys. Res. Lett. 40, 1356-1361. https://doi.org/10.1002/grl.50349. |
Peeken et al. (2018a) Nat. Comm. 9:1505. |
Philipp, M., and others: Automated Extraction of Annual Erosion Rates for Arctic Permafrost Coasts Using Sentinel-1, Deep Learning, and Change Vector Analysis. Remote Sens. 2022, 14, 3656. https://doi.org/10.3390/rs14153656, 2022. |
Polyakov, I.V., M.B. Alkire, B.A. Bluhm, K.A. Brown, E.C. Carmack, M. Chierici, S.L. Danielson, I. Ellingsen, et al. 2020. Borealization of the Arctic Ocean in response to anomalous advection from sub-Arctic seas. Frontiers in Marine Science 7:491. Protection of the Arctic Marine Environment (PAME) Arctic Shipping Status Report (ASSR) #1, 2020. The Increase in Arctic Shipping 2013-2019, March 31. |
Qi, D., Chen, L., Chen, B. et al. Increase in acidifying water in the western Arctic Ocean. Nature Clim Change 7, 195–199 (2017). https://doi.org/10.1038/nclimate3228 |
Saunois, M., and others: The Global Methane Budget 2000-2017, Earth Syst Sci Data, 12, 1561-1623, 10.5194/essd-12-1561-2020, 2020. |
Schmidtko, S., Stramma, L., and Visbeck, M.: Decline in global oceanic oxygen content during the past five decades, Nature, 542, 335-339, 10.1038/nature21399, 2017. |
Shakhova, N., and others: Current rates and mechanisms of subsea permafrost degradation in the East Siberian Arctic Shelf. Nat Commun 8, 15872. https://doi.org/10.1038/ncomms15872, 2017. |
Shakhova, N., and others: Ebullition and storm-induced methane release from the East Siberian Arctic Shelf. Nat. Geosci., 7, 64–70, doi:10.1038/ngeo2007, 2013. |
Simmonds, I., Keay, K., 2009. Extraordinary September Arctic sea ice reductions and their relationships with storm behavior over 1979 - 2008. Geophys. Res. Lett. 36, L19715. https://doi.org/10.1029/2009GL039810. |
Solomon, A., Heuzé, C., Rabe, B., Bacon, S., Bertino, L., Heimbach, P., Inoue, J., Iovino, D., Mottram, R., Zhang, X., Aksenov, Y., McAdam, R., Nguyen, A., Raj, R. P., and Tang, H.: Freshwater in the Arctic Ocean 2010–2019, Ocean Sci., 17, 1081–1102, https://doi.org/10.5194/os-17-1081-2021, 2021. |
State of the Cryosphere 2021: A Needed Decade of Urgent Action, November 2021 (released 7 Nov 2022) www.iccinet.org/statecryo21. International Cryosphere Climate Initiative. |
Steinbach, J., and others: Source apportionment of methane escaping the subsea permafrost system in the outer Eurasian Arctic Shelf. Proceedings of the National Academy of Sciences, 118(10), p.e2019672118, https://doi.org/10.1073/pnas.2019672118, 2021. |
Stephenson, S.R., and others: Divergent long-term trajectories of human access to the Arctic. Nat. Clim. Chang. 1, 156-160, 10.10-38/NCLIMATE1120, 2011. |
Tekman et al. (2017) Deep-Sea Res.I 120: 88. |
Terhaar, J., and others: Around one third of current Arctic Ocean primary production sustained by rivers and coastal erosion. Nat Commun 12, 169, https://doi.org/10.1038/s41467-020-20470-z, 2021. |
Terhaar, Jens, Lester Kwiatkowski, and Laurent Bopp. "Emergent constraint on Arctic Ocean acidification in the twenty-first century." Nature 582.7812 (2020): 379-383. |
Thornton, B.F., and others: Methane fluxes from the sea to the atmosphere across the Siberian shelf seas. Geophys. Res. Letters, 43(11), 5869–5877, doi:10.1002/2016GL068977, 2016. |
Tinker, J., Lowe, J., Pardaens, A., Holt, J., and Barciela, R.: Uncertainty in climate projections for the 21st century northwest European shelf seas, Progress in Oceanography, 148, 56-73, 10.1016/j.pocean.2016.09.003, 2016. |
Todorov, A.,: Russia's implementation of the Polar Code on the Northern Sea Route. Polar J. 11 (1), 30-42. https://doi.org/10.1080/2154896X.2021.1911044, 2021. |
Van Sebille et al. (2012) Env. Res. Lett. 7: 044040. |
Vermaat, J. E., McQuatters-Gollop, A., Eleveld, M. A., and Gilbert, A. J.: Past, present and future nutrient loads of the North Sea: Causes and consequences, Estuar Coast Shelf S, 80, 53-59, 10.1016/j.ecss.2008.07.005, 2008. |
Wilson, C., Aksenov, Y., Rynders, S., Kelly, S. J., Krumpen, T., and Coward, A. C.: Significant variability of structure and predictability of Arctic Ocean surface pathways affects basin-wide connectivity, Commun Earth Environ, 2, ARTN 164, 10.1038/s43247-021-00237-0, 2021. |
Wopschall, R., Michels, K.: Cable protection methods and applications in an arctic environment. SubOptic 2013, Paris. https://suboptic.org/resources/suboptic-2013, 2013. |
Zolkos, S., and others: Multidecadal declines in particulate mercury and sediment export from Russian rivers in the pan-Arctic basin. In Proceedings of the National Academy of Sciences (Vol. 119, Issue 14). Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2119857119, 2022. |