The National Snow and Ice Data Center (NSIDC) is a United States information and referral center in support of polar and cryospheric research. NSIDC archives and distributes digital and analog snow and ice data and also maintains information about snow cover, avalanches, glaciers, ice sheets, freshwater ice, sea ice, ground ice, permafrost, atmospheric ice, paleoglaciology, and ice cores.
The Byrd Polar and Climate Research Center (BPCRC) is a polar, alpine, and climate research center at The Ohio State University founded in 1960.
A polar ice cap or polar cap is a high-latitude region of a planet, dwarf planet, or natural satellite that is covered in ice.
A circumpolar vortex, or simply polar vortex, is a large region of cold, rotating air that encircles both of Earth's polar regions. Polar vortices also exist on other rotating, low-obliquity planetary bodies. The term polar vortex can be used to describe two distinct phenomena; the stratospheric polar vortex, and the tropospheric polar vortex. The stratospheric and tropospheric polar vortices both rotate in the direction of the Earth's spin, but they are distinct phenomena that have different sizes, structures, seasonal cycles, and impacts on weather.
Major environmental issues caused by contemporary climate change in the Arctic region range from the well-known, such as the loss of sea ice or melting of the Greenland ice sheet, to more obscure, but deeply significant issues, such as permafrost thaw, as well as related social consequences for locals and the geopolitical ramifications of these changes. The Arctic is likely to be especially affected by climate change because of the high projected rate of regional warming and associated impacts. Temperature projections for the Arctic region were assessed in 2007: These suggested already averaged warming of about 2 °C to 9 °C by the year 2100. The range reflects different projections made by different climate models, run with different forcing scenarios. Radiative forcing is a measure of the effect of natural and human activities on the climate. Different forcing scenarios reflect things such as different projections of future human greenhouse gas emissions.
Polar amplification is the phenomenon that any change in the net radiation balance tends to produce a larger change in temperature near the poles than in the planetary average. This is commonly referred to as the ratio of polar warming to tropical warming. On a planet with an atmosphere that can restrict emission of longwave radiation to space, surface temperatures will be warmer than a simple planetary equilibrium temperature calculation would predict. Where the atmosphere or an extensive ocean is able to transport heat polewards, the poles will be warmer and equatorial regions cooler than their local net radiation balances would predict. The poles will experience the most cooling when the global-mean temperature is lower relative to a reference climate; alternatively, the poles will experience the greatest warming when the global-mean temperature is higher.
Measurement of sea ice is important for safety of navigation and for monitoring the environment, particularly the climate. Sea ice extent interacts with large climate patterns such as the North Atlantic oscillation and Atlantic Multidecadal Oscillation, to name just two, and influences climate in the rest of the globe.
Elizabeth Mary Morris,, also known as Liz Morris, is a glaciologist and Senior Associate at the Scott Polar Research Institute, University of Cambridge. She has been a visiting professor at the University of Reading since 1995. She was head of the ice and climate division at the British Antarctic Survey, from 1986 to 1999, and president of the International Glaciological Society, from 2002 to 2005.
Sea ice in the Arctic has declined in recent decades in area and volume due to climate change. It has been melting more in summer than it refreezes in winter. Global warming, caused by greenhouse gas forcing is responsible for the decline in Arctic sea ice. The decline of sea ice in the Arctic has been accelerating during the early twenty‐first century, with a decline rate of 4.7% per decade. It is also thought that summertime sea ice will cease to exist sometime during the 21st century.
The Arctic ice pack is the sea ice cover of the Arctic Ocean and its vicinity. The Arctic ice pack undergoes a regular seasonal cycle in which ice melts in spring and summer, reaches a minimum around mid-September, then increases during fall and winter. Summer ice cover in the Arctic is about 50% of winter cover. Some of the ice survives from one year to the next. Currently, 28% of Arctic basin sea ice is multi-year ice, thicker than seasonal ice: up to 3–4 m (9.8–13.1 ft) thick over large areas, with ridges up to 20 m (65.6 ft) thick. Besides the regular seasonal cycle there has been an underlying trend of declining sea ice in the Arctic in recent decades as well.
Katharine Anne Giles was a British climate scientist. Her research considered sea ice cover, ocean circulation and wind patterns. She was a passionate science communicator, and since 2015, the Association of British Science Writers has held a science communication award in her honour.
Claire Lucille Parkinson is an American Earth scientist and climatologist at NASA's Goddard Space Flight Center.
The Multidisciplinary drifting Observatory for the Study of Arctic Climate expedition was a one-year-long expedition into the Central Arctic. For the first time a modern research icebreaker was able to operate in the direct vicinity of the North Pole year round, including the nearly half year long polar night during winter. In terms of the logistical challenges involved, the total number of participants, the number of participating countries, and the available budget, MOSAiC represents the largest Arctic expedition in history.
Julie Brigham-Grette is a glacial geologist and a professor in the Department of Geosciences at the University of Massachusetts Amherst where she co-directs the Joseph Hartshorn Quaternary Laboratory. Her research expertise is in glacial geology and paleoclimatology; she has made important contributions to Arctic marine and terrestrial paleoclimate records of late Cenozoic to recent, the evolution of the Arctic climate, especially in the Beringia/Bering Strait region, and was a leader of the international Lake El’gygytgyn Drilling Project in northeastern Russia.
Jonathan Louis Bamber is a British physicist known for his work on satellite remote sensing of the polar regions and especially the Antarctic and Greenland ice sheets. He has authored more than 180 refereed scientific publications about the cryosphere and its interaction with the rest of the Earth System, and is recognised by the Institute for Scientific Information as a "highly cited researcher”. In 2019 he was elected a fellow of the American Geophysical Union "For pioneering satellite remote sensing in glaciology and building bridges to other disciplines of the geoscience community." He is the first non-US scientist in the Cryosphere division to receive this honour.
Isabella Velicogna is a geoscientist known for her work using gravity measurements from space to study changes in the polar ice sheets and water storage on Earth.
Marika Holland is a scientist at the National Center for Atmospheric Research known for her work on modeling sea ice and its role in the global climate.
Arctic Basecamp is a not-for-profit science outreach organisation. It was founded in 2017. It works to promote awareness of the global risks of climate change in the Arctic to world leaders from business, policy and civil society.
Sinéad Louise Farrell is a British-American space scientist who is Professor of Geographic Sciences at the University of Maryland, College Park. Her research considers remote sensing and climate monitoring. She was science lead for the ICESat-2 Mission, which used laser altimetry to make height maps of Earth.
Stephanie Louise Pfirman is a professor at Arizona State University known for her work on sea ice, pollutants in sea ice, and how sea ice is changing over time. She is a fellow of the American Association for the Advancement of Science.
