'Unprecedented' Wildfires in Arctic Have Scientists
Concerned
Jordan Davidson
Jul. 25, 2019 11:53AM EST CLIMATE
So many wildfires
are burning in the Arctic, they're visible from space, new images from NASA's
Earth Observatory show. The satellite images reveal huge plumes of smoke
wafting across uninhabited lands in Siberia, Greenland and Alaska, as CNN
reported.
Summer fires are common in the Arctic, but not at this
scale.
"I think it's fair to say July Arctic Circle #wildfires
are now at unprecedented levels," said Mark Parrington, a senior scientist
at Europe's Copernicus Atmosphere Monitoring Service, on Twitter earlier this
week.
Copernicus' scientists have been tracking more than 100
wildfires raging above the Arctic Circle since the start of June, which was the
hottest June on record. July is on pace to break records too as Europe bakes
under another heat wave this week.
"The magnitude is unprecedented in the 16-year
satellite record," said Thomas Smith, an assistant professor in
environmental geography at the London School of Economics, to USA Today. "The fires appear to be further north
than usual, and some appear to have ignited peat soils."
Peat fires burn deeper in the ground and can last for weeks
or even months instead of a few hours or days like most forest fires, according
to the UPI.
The researchers at Copernicus track how much greenhouse gas
the wildfires emit into the atmosphere as well. So far, the Arctic's fires have
released approximately 100 megatons, 100 million metric tons, of CO2 between
June 1 and July 21, which Parrington said on Twitter "is getting close to
2017 fossil fuel CO2 emissions of Belgium" for the entire year, as USA
Today reported.
Smith added another comparison to the amount of carbon
released in the past two months.
"These are some of the biggest fires on the planet,
with a few appearing to be larger than 100,000 hectares (380 square
miles)," he told USA Today. "The amount of CO2 (carbon dioxide)
emitted from Arctic Circle fires in June 2019 is larger than all of the CO2
released from Arctic Circle fires in the same month from 2010 through to 2018
put together."
That number is likely to jump as the fires burn through the
peat, which acts as a carbon reservoir.
"The fires are burning through long-term carbon stores
(peat soil) emitting greenhouse gases, which will further exacerbate greenhouse
warming, leading to more fires," said Smith.
Parrington said that the Arctic is seeing temperatures rise
twice as fast as the global average.
"What this means is that, following ignition, the
environmental conditions have been ideal for the fires to grow and
continue," he told USA Today.
The fires were likely ignited by lightning strikes and are
now enormous. The largest fires are located in Siberia, in the regions of
Irkutsk, Krasnoyarsk and Buryatia, according to the Earth Observatory, as Live
Science reported. They have
conflagrations have burned 320 square miles, 150 square miles, and 41 square
miles, respectively.
Atmospheric scientist Santiago Gasso said on Twitter the
Siberian fires have "now created a smoke lid extending over 4 and half
million (square km) over central northern Asia. This is staggering."
Krasnoyarsk, the Russian city near the second largest fire,
is blanketed in haze, according to the Earth Observatory. Siberia's largest
city, Novosibirsk, doesn't have any fires as now, but smoke carried there by
the winds caused the city's air quality to drop, as Live Science reported.
Right now, the city's Air Quality Index is hazardous.
Since the fires in the Siberian arctic are raging in
uninhabited areas, firefighters are not able to access them. Only rain will put
them out.
Firefighters are working to put out the fires in Alaska
since they are farther south, according to USA Today.
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