The black carbon dispersion in the Southern Hemisphere and its transport and fate to Antarctica, an Anthropocene evidence for climate change policies

Pino-Cortés, Ernesto; Díaz-Robles, Luis A.; Cubillos, Francisco A.; Cereceda-Balic, Francisco; Santander, Roberto; Fu, Joshua S.; Carrasco, Samuel; Acosta, Jonathan

doi:10.1016/j.scitotenv.2021.146242

Cited by 20 publications

(6 citation statements)

References 55 publications

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“…The remarkably low background concentrations of BC in Antarctica are compatible with simulations of long-range BC transport from prominent sources in the Southern Hemisphere 22 , 23 and with observations of episodic intercontinental transport of aerosols. Smoke from wildfires in South America 24 and in Australia 25 , 26 has been detected over Antarctica as well as dust originating in Central Australia 27 and in southern Patagonia 28 .…”

Section: Introductionsupporting

confidence: 81%

Black carbon footprint of human presence in Antarctica

et al. 2022

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Black carbon (BC) from fossil fuel and biomass combustion darkens the snow and makes it melt sooner. The BC footprint of research activities and tourism in Antarctica has likely increased as human presence in the continent has surged in recent decades. Here, we report on measurements of the BC concentration in snow samples from 28 sites across a transect of about 2,000 km from the northern tip of Antarctica (62°S) to the southern Ellsworth Mountains (79°S). Our surveys show that BC content in snow surrounding research facilities and popular shore tourist-landing sites is considerably above background levels measured elsewhere in the continent. The resulting radiative forcing is accelerating snow melting and shrinking the snowpack on BC-impacted areas on the Antarctic Peninsula and associated archipelagos by up to 23 mm water equivalent (w.e.) every summer.

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Section: Introductionsupporting

confidence: 81%

Black carbon footprint of human presence in Antarctica

et al. 2022

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“…Fire emission data sets was extracted from http://www.globalfiredata.org. Black carbon emissions in Australia from biomass combustion were dominated by fires emissions from savanna, grassland and shrub fires (Pino‐Cortés et al., 2021). From 1997 to 2015, black carbon emissions accounted for 81.3% of total black carbon emissions from biomass combustion (Van Der Werf et al., 2017).…”

Section: Resultsmentioning

confidence: 99%

Changes in Refractory Black Carbon (rBC) Deposition to Coastal Eastern Antarctica During the Past Century

Ding

et al. 2022

Global Biogeochemical Cycles

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Refractory black carbon (rBC, soot) aerosol is formed during incomplete combustion of biomass and fossil fuels. It can effectively absorbs visible light and plays a critical role in climate system (Bond et al., 2013). As the second most important radiation forcing mass after carbon dioxide (Bond et al., 2013), rBC forces climate directly by absorbing and scattering solar radiation at the top of the atmosphere and indirectly by changing cloud formation and reducing albedo of snow and ice (

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“…In a recent paper, Pino‐Cortés et al. (2021) showed that the BC produced from biomass fires in Australia was transported to Antarctica in 17–24 days and accumulated during a period of a weak polar vortex. Fiebig et al.…”

Section: Discussionmentioning

confidence: 99%

“…A recent study by Pino‐Cortés et al. (2021) reported that PyC produced from the emissions of Australian biomass burning took 17–24 days to reach and be deposited in Antarctica, showing that PyC effectively reaches Antarctica by air transportation.…”

Section: Introductionmentioning

confidence: 99%

“…PyC and soot particles have been detected, for example, in the atmosphere, snow surface and ice cores of Antarctica (Bisiaux et al, 2012;Fiebig et al, 2009;Hansen et al, 2001;Warren & Clark, 1990). A recent study by Pino-Cortés et al (2021) reported that PyC produced from the emissions of Australian biomass burning took 17-24 days to reach and be deposited in Antarctica, showing that PyC effectively reaches Antarctica by air transportation.…”

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confidence: 99%

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Isotopic Records of Ancient Wildfires in C₄ Grasses Preserved in the Sediment of the Ross Sea, Antarctica

Ren

Luo

Zhang

et al. 2022

Geophysical Research Letters

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We report carbon isotopic values in total organic carbon (TOC) and pyrogenic carbon (PyC) preserved in two sediment cores from the Ross Sea, Antarctica. The δ13C values of PyC ranged from −10.9‰ to −17.2‰, with distinct differences from the δ13C values of TOC (−24.1‰ to −26.1‰) in the sediments. The radiocarbon ages of PyC were 9,128 and 8,410 years old on average in the two cores but were thousands of years younger than the ages of TOC at the same core depth. These isotopic records provide strong evidence indicating that the PyC was produced from ancient wildfires predominantly in C4 vegetation and transported to Antarctica in the atmosphere. We suggest that ancient wildfires in predominantly C4 grasslands likely frequently occurred on a large scale and at a high intensity in the Southern Hemisphere during the last deglaciation to mid‐Holocene period of 14,800–4,200 years ago.

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The black carbon dispersion in the Southern Hemisphere and its transport and fate to Antarctica, an Anthropocene evidence for climate change policies

Cited by 20 publications

References 55 publications

Black carbon footprint of human presence in Antarctica

Black carbon footprint of human presence in Antarctica

Changes in Refractory Black Carbon (rBC) Deposition to Coastal Eastern Antarctica During the Past Century

Isotopic Records of Ancient Wildfires in C₄ Grasses Preserved in the Sediment of the Ross Sea, Antarctica

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The black carbon dispersion in the Southern Hemisphere and its transport and fate to Antarctica, an Anthropocene evidence for climate change policies

Cited by 20 publications

References 55 publications

Black carbon footprint of human presence in Antarctica

Black carbon footprint of human presence in Antarctica

Changes in Refractory Black Carbon (rBC) Deposition to Coastal Eastern Antarctica During the Past Century

Isotopic Records of Ancient Wildfires in C4 Grasses Preserved in the Sediment of the Ross Sea, Antarctica

Contact Info

Product

Resources

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Isotopic Records of Ancient Wildfires in C₄ Grasses Preserved in the Sediment of the Ross Sea, Antarctica