通过提高耕地岩石气候变化来进行大规模的二氧化碳除去
David J Beerling1, Euripides P Kantzas2, Mark R Lomas2
1Leverhulme Centre for Climate Change Mitigation, Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK. d.j.beerling@sheffield.ac.uk.
Nature
|July 10, 2020
概括
增强的岩气候处理 (ERW) 可以去除大气中的二氧化碳 (CO2),并为粮食和土壤安全提供共同利益. 大国可以以可控的成本实现全球二氧化碳排放目标,
科学领域:
- 环境科学
- 气候科学
- 地质化学
背景情况:
- 人为气候变化需要去除大气中的二氧化碳 (CDR).
- 增强的岩气候处理 (ERW) 是一个可在耕地上部署的潜在CDR战略.
- 电带来了共同的好处,包括改善粮食和土壤安全,减少海洋酸化.
研究的目的:
- 在2050年对二氧化碳去除 (CDR) 的ERW进行初步技术经济评估.
- 量化不同国家的CDR潜力和相关成本.
- 评估不同能源政策对ERW部署的影响.
主要方法:
- 综合性能建模方法.
- 2050年的技术经济评估.
- 分析不同能源政策情景下的CDR潜力和成本 (常规业务与2°C变暖缓解).
主要成果:
- 中国,印度,美国和巴西显示出基于ERW的CDR的巨大潜力.
- 全球二氧化碳排放目标每年达到0.5-2千兆,每二氧化碳的成本约为80-180美元.
- 在未来的不同能源政策中,CDR的潜力和成本仍然很强大.
结论:
- 在耕地上部署ERW使农业和气候政策保持一致.
- 克服政治和社会障碍对于ERW的实施至关重要.
- 使用工业酸盐材料可以减少对新采矿的需求,尽管存在风化率和陆海转移的不确定性.
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