Siberian Fires Are Another Climate Change Worry

Forests in Siberia are burning at unprecedented rates this summer,
causing all kinds of ecological havoc. Photo from Tass via Getty Images

Yesterday, I talked about the big meltdown going on across Greenland's ice sheet, which is of course bad news.

Today, more bad news. As you might have heard in some news reports, there are huge, HUGE wildfires going on in Siberia.

Why should we care, you might ask. Hardly anybody lives there, and it's so far away. It's not impacting our lives, is it?

Well, short term it's affecting our lives a little, and long term, is contributing to bigger problems associated with climate change.

So far, according to Vox, 15,000 square miles of Siberia have gone up in flames this year. That's about the size of Maryland.

Smoke from the fires is choking nearby cities, causing health problems for many. The smoke is circling much of the Northern Hemisphere. Here in Vermont, we can all agree that Friday was a gorgeous day: Clear skies, warm sun, low humidity, a perfect beach day. But did you notice the sort of hazy quality to the sky? It wasn't exactly a robin egg blue. More of an ashy color.

Most of that haze was caused by smoke from Siberia.

That haze contains little particles of soot that are raining down everywhere. Right here in Vermont, it's not a big deal, because there's too little of it to be much of a threat to anything.

But some of the soot is coming down on what's left of the Arctic ice this year, on the Greenland ice caps and glaciers throughout places like Canada, the Arctic and Europe.  The soot darkens the ice. Pure white ice deflects sunlight. Darker ice draws in the sun's warmth, leading to faster melting.

The soot will always be there. So, if pure white snow falls on top during the winter, that's a good thing. Unless all that snow melts next summer and the sooty snow is exposed to the sun again. That means faster melting next year, and years to come, too.

The fires are contributing to likely further increases in global temperatures, too. Smithsonianmag.com reports that wildfires across the Arctic belched 50 megatons of carbon dioxide into the atmosphere in June alone. That's about the same as Sweden's total annual carbon emissions.

Some of the fires are burning in Arctic peat bogs. Normally, they are wet and help contain the spread of fires. But early snow melt and hotter summer temperatures have led the peat to start burning as well. Peat contains carbon that's been stored there for decades or centuries. The peat fires are releasing that stored carbon into the atmosphere, as Smithsonian notes. 

It's a viscious loop.  Warming contributes to more Arctic fires. Those Arctic fires warm the atmosphere more, leading to even drier, hotter conditions up there, leading to more fires, more warmth, etc. etc.

As Vox notes, there are wildfires in Siberia every year.  But the fires this year, and in recent years, have been bigger and badder than in the past.

OK, have a cheered you up yet?