Arctic

State of the climate in 2022: special supplement to the Bulletin of the American Meteorological Society

This is the 33rd issuance of the annual assessment now known as State of the Climate, published in the Bulletin since 1996. As a supplement to the Bulletin, its foremost function is to document the status and trajectory of many components of the climate system. However, as a series, the …

President Obama Stops Oil Drilling in the Arctic Ocean

A five-year offshore drilling plan has been set out by the Obama administration to block off any possible oil drilling activities in the Arctic Ocean, specifically in the Chukchi and Beaufort seas north of Alaska. Set out for 2017 to 2022, the new offshore plan may save the deteriorating conditions …

Genetic profiling links changing sea-ice to shifting beluga whale migration patterns

There is increasing concern over how Arctic fauna will adapt to climate related changes in sea-ice. We used long-term sighting and genetic data on beluga whales (Delphinapterus leucas) in conjunction with multi-decadal patterns of sea-ice in the Pacific Arctic to investigate the influence of sea-ice on spring migration and summer …

Persistent shift of the Arctic polar vortex towards the Eurasian continent in recent decades

The wintertime Arctic stratospheric polar vortex has weakened over the past three decades, and consequently cold surface air from high latitudes is now more likely to move into the middle latitudes. However, it is not known if the location of the polar vortex has also experienced a persistent change in …

Consequences of Climate Change: Polar Bear Population Shrinking Due to Arctic Sea Ice Melt

Polar bears have taken the most drastic hit from the melting Arctic sea ice due to climate change as they find it hard to catch food for survival. According to a report from Earth Sky, polar bears have taken the most drastic hit from the melting Arctic sea ice due …

Canadian Arctic sea ice reconstructed from bromine in the Greenland NEEM ice core

Reconstructing the past variability of Arctic sea ice provides an essential context for recent multi-year sea ice decline, although few quantitative reconstructions cover the Holocene period prior to the earliest historical records 1,200 years ago. Photochemical recycling of bromine is observed over first-year, or seasonal, sea ice in so-called “bromine …

Sea ice decline and 21st century trans-Arctic shipping routes

The observed decline in Arctic sea ice is projected to continue, opening shorter trade routes across the Arctic Ocean, with potentially global economic implications. Here we quantify, using Coupled Model Intercomparison Project Phase 5 global climate model simulations calibrated to remove spatial biases, how projected sea ice loss might increase …

2016 ties with 2007 for second lowest Arctic sea ice minimum

The Arctic's ice cover appears to have reached its minimum extent on September 10, 2016, according to scientists at the National Snow and Ice Data Center (NSIDC). Arctic sea ice extent on that day stood at 4.14 million square kilometers (1.60 million square miles), statistically tied at second lowest in …

Arctic sea ice cover set to be second lowest ever recorded, data suggests

Arctic sea ice cover could be confirmed within days as the second lowest ever recorded, the latest data suggests. According to the US national snow and ice data centre (NSIDC) the ice which forms and disperses annually has been close to its minimum extent for the year for several days …

Sea-ice indicators of polar bear habitat

Nineteen subpopulations of polar bears (Ursus maritimus) are found throughout the circumpolar Arctic, and in all regions they depend on sea ice as a platform for traveling, hunting, and breeding. Therefore polar bear phenology – the cycle of biological events – is linked to the timing of sea-ice retreat in …

Ocean warming to impact food production in India, elsewhere

Food security of India and several other major key food producing countries are threatened by changing weather patterns due to warming of the oceans, which may well be the “greatest” hidden challenge for the present generation, according to a study. Changes in ocean-focused atmospheric patterns have direct implications on food …

Arctic sea ice will miss record low despite major melt, experts say

Though Arctic sea ice started the summer at record lows, it is unlikely to set a new record annual minimum, reports Climate Central As the sun begins its seasonal descent in the Arctic sky and temperatures drop, the summer melt of sea ice is slowing down. In the next few …

Monte Carlo modelling projects the loss of most land-terminating glaciers on Svalbard in the 21st century under RCP 8.5 forcing

The high Arctic archipelagos around the globe are among the most strongly glacierized landscapes on Earth apart from the Greenland and Antarctic ice sheets. Over the past decades, the mass losses from land ice in the high Arctic regions have contributed substantially to global sea level rise. Among these regions, …

Early onset of industrial-era warming across the oceans and continents

The evolution of industrial-era warming across the continents and oceans provides a context for future climate change and is important for determining climate sensitivity and the processes that control regional warming. Here we use post-AD 1500 palaeoclimate records to show that sustained industrial-era warming of the tropical oceans first developed …

Historical documents reveal Arctic sea ice is disappearing at record speed

Scientists have pieced together historical records to reconstruct Arctic sea ice extent over the past 125 years. The results are shown in the figure below. The red line, showing the extent at the end of the summer melt season, is the most critical: Arctic sea ice extent in recent years …

State of the Climate in 2015

The State of the Climate report series is the authoritative annual summary of the global climate. Published in the Bulletin of the American Meteorological Society, the report is edited by scientists at NOAA’s National Centers for Environmental Information. The 2015 report is based on contributions from more than 450 scientists …

Scientists caught off-guard by record temperatures linked to climate change

Record temperatures in the first half of 2016 have taken scientists by surprise despite widespread recognition that extreme weather events are becoming more frequent and intense, the director of the World Climate Research Program said. The earth is on track for its hottest year on record with June marking the …

Scientists caught off-guard by record temperatures linked to climate change

LONDON (Thomson Reuters Foundation) - Record temperatures in the first half of 2016 have taken scientists by surprise despite widespread recognition that extreme weather events are becoming more frequent and intense, the director of the World Climate Research Program said. The earth is on track for its hottest year on …

Earth on track for hottest year ever as warming speeds up

The earth is on track for its hottest year on record and warming at a faster rate than expected, the World Meteorological Organization (WMO) said on Thursday. Temperatures recorded mainly in the northern hemisphere in the first six months of the year, coupled with an early and fast Arctic sea …

Historical records miss a fifth of global warming: NASA

A new NASA-led study finds that almost one-fifth of the global warming that has occurred in the past 150 years has been missed by historical records due to quirks in how global temperatures were recorded. The study explains why projections of future climate based solely on historical records estimate lower …

Density and climate influence seasonal population dynamics in an Arctic ungulate

The locally migratory behavior of the high arctic muskox (Ovibos muschatus) is a central component of the breeding and winter survival strategies applied to cope with the highly seasonal arctic climate. However, altered climate regimes affecting plant growth are likely to affect local migration dynamics of the muskox. In this …

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