11.08.2018

# Media

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Earth911: Talking Direct Air Capture of Atmospheric CO2 with Peter Fiekowsky

"Peter Fiekowsky joined Earth911’s Sustainability In Your Ear podcast recently to explain direct air capture, a technology that extracts carbon dioxide from the air. Peter also spoke with Earth911 in June about ocean iron fertilization, another approach to sequestering carbon on the ocean floor."

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10.08.2018

# Media

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teKK: Forests are crucial for limiting climate change to 1.5 degrees (German)

German article on CE.

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08.08.2018

# New Publications

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Harper, A. B.; et al. (2018): Land-use emissions play a critical role in land-based mitigation for Paris climate targets

Harper, A. B.; Powell, T.; Cox, P. M.; House, J.; Huntingford, C.; Lenton, T. M. et al. (2018): Land-use emissions play a critical role in land-based mitigation for Paris climate targets. In: Nat Comms 9 (1), S. 405. DOI: 10.1038/s41467-018-05340-z.

"Here we show that additional land-use change to meet a 1.5 °C climate change target could result in net losses of carbon from the land. The effectiveness of BECCS strongly depends on several assumptions related to the choice of biomass, the fate of initial above ground biomass, and the fossil-fuel emissions offset in the energy system. Depending on these factors, carbon removed from the atmosphere through BECCS could easily be offset by losses due to land-use change. If BECCS involves replacing high-carbon content ecosystems with crops, then forest-based mitigation could be more eficient for atmospheric CO2 removal than BECCS."

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08.08.2018

# New Publications

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Bond-Lamberty, B.; et al. (2018): Globally rising soil heterotrophic respiration over recent decades

Bond-Lamberty, B.; Bailey, V. L.; Chen, M.; Gough, C. M.; Vargas, R. (2018): Globally rising soil heterotrophic respiration over recent decades. In: Nature 560 (7716), S. 80–83. DOI: 10.1038/s41586-018-0358-x

"Here we use an updated global soil respiration database9 to show that the observed soil surface RH:RS ratio increased significantly, from 0.54 to 0.63, between 1990 and 2014 (P = 0.009). Three additional lines of evidence provide support for this finding. By analysing two separate global gross primary production datasets10,11, we find that the ratios of both RH and RS to gross primary production have increased over time."

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07.08.2018

# New Publications

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Goldberg, David; et al. (2018): Geological storage of CO 2 in sub-seafloor basalt. The CarbonSAFE pre-feasibility study offshore Washington State and British Columbia

Goldberg, David; Aston, Lara; Bonneville, Alain; Demirkanli, Inci; Evans, Curtis; Fisher, Andrew et al. (2018): Geological storage of CO 2 in sub-seafloor basalt. The CarbonSAFE pre-feasibility study offshore Washington State and British Columbia. In: Energy Procedia 146, S. 158–165. DOI: 10.1016/j.egypro.2018.07.020.

"Sub-seafloor basalts are very common on Earth and enable CO2 mineralization as a long-term storage mechanism, permanently sequestering the carbon in solid rock form. Our project goals include the evaluation of this reservoir as an industrial-scale CO2 storage complex, developing potential source/transport scenarios, conducting laboratory and modeling studies to determine the potential capacity of the reservoir, and completing an assessment of economic, regulatory and project management risks."

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06.08.2018

# Media

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Newcastle Herald: Negative emissions technology and global warming

"To avoid 2 degrees average global warming before 2100, widespread negative emissions technologies that remove CO2 from the air need to start by 2030 – in 11 years – ramping up to global net negative emissions by 2070."

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06.08.2018

# Media

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Techradar: Could geoengineering be used to manage our climate?

"This is geoengineering, a range of complex and controversial techniques that are set to one day be used to tinker with global weather systems."

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06.08.2018

# Media

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Das Parlament: Climate killer into the sea? (German)

German article on CE.

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04.08.2018

# New Publications

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Pawlok, D.; et al. (2018): Grasslands may be more reliable carbon sinks than forests in California

Pawlok, D.; Houlton, B. Z.; Wang, Y.; Warlind, D. (2018): Grasslands may be more reliable carbon sinks than forests in California. In: Environ. Res. Lett. 13 (7), S. 74027. DOI: 10.1088/1748-9326/aacb39.

"Using a set of modeling experiments, we show that California grasslands are a more resilient C sink than forests in response to 21st century changes in climate, with implications for designing climate-smart Cap and Trade offset policies. The resilience of grasslands to rising temperatures, drought and fire, coupled with the preferential banking of C to belowground sinks, helps to preserve sequestered terrestrial C and prevent it from re-entering the atmosphere."

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04.08.2018

# New Publications

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Rau, Greg H.; et al. (2018): Negative-CO 2 -emissions ocean thermal energy conversion

Rau, Greg H.; Baird, Jim R. (2018): Negative-CO 2 -emissions ocean thermal energy conversion. In: Renewable and Sustainable Energy Reviews 95, S. 265–272. DOI: 10.1016/j.rser.2018.07.027.

"Conversion of the ocean’s vertical thermal energy gradient to electricity via Ocean Thermal Energy Conversion (OTEC) has been demonstrated at small scales over the past century, and represents one of the largest (and growing) potential energy sources on the planet. Here we describe how OTEC could be modified to provide a large source of CO2-emissions-negative energy while also allowing heat removal from the surface ocean, helping to directly counter ocean/atmosphere warming."

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