What Is The Warmest Temperature In Antarctica - The new record, which follows the previous record of 17.5 degrees in March 2015, is a sign that Antarctica is warming much faster than the global average.
Argentina's Esperanza Station in Antarctica, seen in March 2014, recorded its hottest day on Thursday. Photo: Wanderlei Almeida/AFP via Getty Images
What Is The Warmest Temperature In Antarctica
Antarctica recorded its hottest temperature on record, with the thermometer at the research station in Argentina showing 18.3 degrees, beating the previous record by 0.8 degrees.
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The reading, taken in Esperanza on the northern tip of the continent, beats the previous Antarctic record of 17.5 degrees, set in March 2015.
Argentina's meteorological agency tweeted on Friday that the record had been set. The station's data dates back to 1961.
#Antartida Regardless of the temperatures 🌡️ This afternoon the Base #Esperanza recorded a new historical record (in 1961) temperature of 18.3°C. With this value surpasses the previous record of 17, 5°C from 24 in March 2015. Y no fue el único registro... pic.twitter.com/rhKsPFytCb— SMN Argentina (@SMN_Argentina) February 6, 2020
According to the World Meteorological Organization, the Antarctic Peninsula - the region facing South America - is one of the hottest places on Earth, warming by around 3 degrees Celsius over the last 50 years. Almost all the glaciers in the region are melting.
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Esperanza's reading broke the record of the Antarctic continent. The record for the Antarctic region, that is, anywhere south of 60 degrees latitude, is 19.8C, which was taken on Signy Island in January 1982.
Professor James Renwick, a climate scientist at the Victoria University of Wellington, was a member of the special committee of the World Meteorological Organization, which confirmed the previous records in Antarctica.
He told Guardian Australia it was likely the commission would reconvene to investigate Esperanza's new record.
He said: "Obviously the record needs to be checked, but pending those tests it's a perfectly valid record and that [temperature] station is holding up well."
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"The reading is impressive because it's only been five years since the previous record was set, and it's about one degree higher. It's a sign of warming there, faster than the global average.
"Getting a new record out soon is amazing, but who knows how long that will last? Probably not that long."
Argentina's Esperanza research base, at the northern tip of the Antarctic Peninsula, today saw a new record temperature of 18.3°C (the previous one was 17.5°C on March 24, 2015), according to @SMN_Argentina. Previous record details at https://t.co/19Un83mmHn#ClimateChange pic.twitter.com/ZKvzr765Am— WMO | WMO (@WMO) February 6, 2020
Higher temperatures in the region tend to be driven by strong northwesterly winds across the mountain slopes — a feature of the weather around Esperanza in recent days, Renwick said.
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He said there are complex weather patterns in the area, but Esperanza's reading is likely a combination of natural variability and background warming caused by rising levels of greenhouse gases in the atmosphere.
"The reason the peninsula is warming faster than elsewhere is a combination of natural changes and warming signals," he said.
Professor Nerily Abram, a climate scientist at the Australian National University, conducted research on James Ross Island at the northern tip of the peninsula.
"It's an area that gets very hot very quickly," he said, adding that sometimes it can be hot enough to wear a T-shirt.
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An earlier study in 2012 found that the current rate of warming in the region is almost unprecedented for the past 2,000 years.
"Even a small increase in warming can lead to a large increase in your energy to melt ice," Abrams said. The result is the collapse of the ice shelves on the peninsula."
He said water can seep through cracks in the ice shelves. Because the ice shelves are already floating in the ocean, their collapse does not directly contribute to sea level rise.
But Abrams said the shelves acted like shims, helping to stabilize the refrigerators behind them. Melting ice caps contribute to sea level rise because they are connected to land.
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Dr Steve Rintoul, oceanographer and Antarctic expert at CSIRO, said: "This is a record for just one station, but it's in the context of what's happening elsewhere and there's more evidence that as the planet warms we're getting warmer records . and less great records."
The lowest temperature ever recorded in Antarctica and anywhere on Earth was recorded at Russia's Vostok station when the temperature dropped to -89.2 degrees Celsius on July 21, 1983. Glaciers in the South Shetland Islands, Antarctica . In recent years, the temperature in the region has become very hot. Photo: Johan Ordonez/AFP via Getty Images
Temperatures of more than 20C (68F) have been recorded in Antarctica for the first time, prompting fears of climate instability in the world's largest ice cap.
The temperature of 20.75C, recorded by Brazilian scientists on Seymour Island on February 9 this year, was almost one degree higher than the previous record of 19.8C, which was recorded on Signi Island in January 1982.
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Here is another recent temperature record: on February 6, an Argentine research station in Esperanza measured 18.3 degrees Celsius, which was the highest temperature in the Antarctic Peninsula.
The records need to be confirmed by the World Meteorological Organization, but they are in line with a wider trend across the peninsula and nearby islands, which have warmed by around 3C since pre-industrial times - one of the fastest rates on the planet.
Scientists, who collect data from remote monitoring stations every three days, described the new record as "amazing and unusual".
Carlos Schäfer, who works at Terrantar, a Brazilian government project that monitors the effects of climate change on permafrost and biology: "We see a warming trend in many of the sites we monitor, but we have never seen anything like this. Carlos Schäfer. said. in 23 places in Antarctica.
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Temperatures on the peninsula, the South Shetland Islands and the James Ross Archipelago, of which Seymour is a part, have been erratic over the past 20 years, Schaefer said. After cooling in the first decade of this century, it warmed rapidly.
Scientists from the Brazilian Antarctic Program say that this seems to be influenced by changes in ocean currents and El Nino events: “We have climate changes in the atmosphere that are closely related to changes in permafrost and oceans. Everything is connected. "
The effects vary across Antarctica, which covers land, islands and the Southern Ocean at 60 degrees latitude. This region contains about 70% of the world's fresh water in the form of snow and ice. If everything were to melt, the sea level would rise 50 to 60 meters, but that would take many generations. UN scientists predict that the oceans will rise between 30 and 110 centimeters by the end of this century, depending on human efforts to reduce emissions and the sensitivity of the ice sheet.
While temperatures are relatively stable in East and Central Antarctica, concerns are growing in West Antarctica, where warming oceans are destroying the massive Thwaite and Pine Island glaciers. So far, this has resulted in relatively little sea level rise, but that could change quickly if there is a sustained jump in temperature.
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The Antarctic Peninsula - the long finger of land that stretches to Argentina - was the hardest hit. During a recent trip with Greenpeace, The Guardian saw glaciers recede more than 100 meters in Discovery Bay and large swathes of land on King George Island, where snow melted in just over a week, leaving dark rocks connected. While some degree of melting occurs every summer, scientists said it has been more pronounced in recent years, with temperatures rising faster in winter. This is thought to be after an alarming decline of more than 50% in chinstrap penguin colonies, which rely on sea ice.
Schaefer said monitoring data from these areas can provide an indication of what to expect for other parts of the region. "Having watch zones like the South Shetlands and the Antarctic Peninsula is important because they can predict developments that will happen in the future and the near future," he said. Live Science is supported by its audience. We may earn an affiliate commission when you make a purchase through links on our site. This is why you can trust us.
A team of Argentine researchers reported that on February 9, Antarctica experienced its hottest single day, reaching 69.35 degrees Fahrenheit (20.75 degrees Celsius).
Researchers told news site AFP.com that this is the first time the continent has seen temperatures rise above 20 degrees Celsius, but not the first time the continent has set a new record this month. On February 6, a research station on the Antarctic Peninsula (the northwestern tip of the continent, closest to South America) reported a high temperature of 64.9 F (18.3 C), beating the previous record of 63.5 F ( 17.5 C), which was installed in March 2015, is higher. .
Breaking* An Incredible Temperature High Of 18.3°c (65°f) Has Been Measured In Antarctica! This Is Possibly The Highest Temperature On The Continent Since The Last Interglacial Period! » Severe Weather Europe
A new high of 69 degrees was recorded at Argentina's Marambio Research Base, located on Seymour Island, part of a chain of islands off the coast of the Antarctic Peninsula. According to them, the peninsula is one of the fastest warming regions on earth
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