For the second year running, vital ecosystems are in flames. Several major fires in the Amazon have been spotted ahead of the rainforest鈥檚 typical fire season, and it seems likely that 2020 will see worse blazes than the ones which triggered international outcry last year.
Fires are also raging across frozen tundra in the Arctic, sending smoke around the world and releasing CO2. These too could match or eclipse last year鈥檚 record-breaking blazes听迟丑别谤别.
Worldwide, this is shaping up to be an average year for forest fires, in stark contrast to these two ecosystems that are crucial to the global climate.
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Since 28 May, 10 major fires have been identified in the Amazon using that detects smoke from burning biomass. All are in Mato Grosso state, Brazil鈥檚 agricultural powerhouse.
The US group that detected them, Amazon Conservation, many of last year鈥檚 fires were in recently-deforested areas 鈥� and the same holds true for the new ones. Conservationists blamed last year鈥檚 fires and a spike in deforestation on illegal loggers emboldened by rhetoric from the Brazilian government and weak regulatory enforcement.
Burning in the Amazon this year is likely to be more severe because a drought is expected from July to September. 鈥淟ast year, the fires in August were bad but there was no widespread drought. This year, fire impacts are likely to be worse,鈥� says K谩tia Fernandes at the University of Arkansas.
Douglas Morton at NASA鈥檚 Goddard Space Flight Center in Maryland forecasts a more active fire season than usual for the southern Amazon, because of warm temperatures in the tropical part of the Atlantic. He says the fires spotted in the past few weeks are in line with the high deforestation rates seen in the past year. have been higher than the same period last year.
Fires in Siberia, which is experiencing unprecedented heat, and other Arctic regions are also contributing to climate change. Between 1 and 25 June, fires in the Arctic circle had emitted 10 megatonnes of CO2, approaching the 14Mt of CO2 seen for the whole of June 2019, according to Mark Parrington at the European Centre for Medium-Range Weather Forecasts in Reading, UK.
He says fires in the region this year聽could be more intense than those in 2019, which were the worst in 16 years of records. The smoke from the fires is expected to reach west Alaska at some point this weekend.
Fires in the snowy forests of the Arctic are normal, but some of these fires are on peatland and the frozen tundra, according to a mapping analysis by Thomas Smith at the London School of Economics. 鈥淕iven that this ground should be frozen all year round, it should not be available to burn. But it is burning, which implies that it has thawed out and has dried. I think this is very important.鈥�
Globally, one bright spot is Indonesia. It has the world鈥檚 third biggest tropical forest and regularly suffers major fires, but is expected to have a quiet year. fires there so far on the low end compared with previous years, though most usually occur in August and September. 鈥淭his year is not predicted to be exceptionally dry, which is good news for reducing smoke from fires,鈥� says Ruth DeFries at Columbia University.
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