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March 1, 2017 by Gary Price

Reference: Fast Facts: World Meteorological Organization (WMO) Verifies Highest Temperatures for Antarctic Region

March 1, 2017 by Gary Price

From the WMO:

A World Meteorological Organization committee of experts has announced new records for the highest temperatures recorded in the Antarctic Region as part of continuing efforts to expand a database of extreme weather and climate conditions throughout the world.
Knowledge and verification of such extremes is important in the study of weather patterns, naturally occurring climate variability and human-induced climate change at global and regional scales.
The highest temperature for the “Antarctica Region” (defined by the WMO and United Nations as all land and ice south of 60°S) of 19.8 degrees Celsius (67.6 degrees Fahrenheit) was observed on 30 January 1982 at Signy Research Station, Borge Bay on Signy Island.
The highest temperature for the “Antarctic continent” defined as the main continental landmass and adjoining islands is the temperature extreme of 17.5°C (63.5°F) recorded on 24 March 2015 at the Argentine Research Base Esperanza located near the northern tip of the Antarctic Peninsula.
Thirdly, the highest temperature for the Antarctic Plateau [at or above 2500 meters (8202 feet)] was the observation of -7.0°C (19.4°F) made on 28 December 1980 at an Automatic Weather Station (AWS) site D-80 located inland of the Adélie Coast.
The lowest temperature yet recorded by ground measurements for the Antarctic Region, and for the whole world, was −89.2°C (-128.6°F) at Vostok station on 21 July 1983.
[Clip]
WMO’s Commission for Climatology maintains an Archive of Weather and Climate Extremes. This includes the world’s highest and lowest temperatures, rainfall, heaviest hailstone, longest dry period, maximum gust of wind, longest lightning flash and highest significant wave height.
Spanning 14 million km2 (roughly twice the size of Australia), the Antarctic is cold, windy and dry. The average annual temperature ranges from about −10°C on the Antarctic coast to −60°C at the highest parts of the interior. Its immense ice sheet is up to 4.8km thick and contains 90% of the world’s fresh water, enough to raise sea level by around 60 metres were it all to melt. The Antarctic Peninsula (the northwest tip near to South America) is among the fastest warming regions of the planet, almost 3°C over the last 50 years. Some 87% of glaciers along the west coast of the Antarctic Peninsula have retreated in the last 50 years with most of these showing an accelerated retreat in the last 12 years.
The verification of these three Antarctic extremes helps increase understanding about the Antarctic’s distinct climatic regimes, specifically maritime versus plateau environments. The WMO’s Commission for Climatology international evaluation committee noted that the records at all three stations occurred during an influx of warm air. At Signy and Esperanza, there was a warming “föhn” wind. At D-80, solar heating under clear skies at high elevation was a major contributory factor.
[Clip]
Full details of the assessment can be found in an article published on 1 March 2017 in Eos.org, the American Geophysical Union’s Earth and space science news website.

Read the Complete WMO Post
Direct to Full Text Article: Evaluating Highest Temperature Extremes in the Antarctic (via EOS News)

Filed under: News, Reports

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About Gary Price

Gary Price (gprice@gmail.com) is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. He earned his MLIS degree from Wayne State University in Detroit. Price has won several awards including the SLA Innovations in Technology Award and Alumnus of the Year from the Wayne St. University Library and Information Science Program. From 2006-2009 he was Director of Online Information Services at Ask.com. Gary is also the co-founder of infoDJ an innovation research consultancy supporting corporate product and business model teams with just-in-time fact and insight finding.

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