Methane, Nonmethane Hydrocarbons, Alkyl Nitrates, and Chlorinated Carbon Compounds including 3 Chlorofluorocarbons (CFC-11, CFC-12, and CFC-113) in Whole-air Samples (April 1979 — December 2012)

Whole-air samples are collected in conditioned, evacuated, 2-L stainless steel canisters; each canister is filled to ambient pressure over a period of about 1 minute (approximately 20 seconds to 2 minutes). These canisters are returned to the University of California at Irvine for chromatographic analysis. Data package updated 4/29/2020 to remove extraneous, unrelated data. Please direct any related questions to the contact listed. For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/otheratg/blake/blake.html全空气样品采集于经预处理的抽真空2升不锈钢采样罐中；每个采样罐将在约1分钟（20秒至2分钟区间）内被充至环境常压。随后将此类采样罐送往加州大学欧文分校进行色谱分析。本数据集数据包于2020年4月29日完成更新，以剔除无关冗余数据。如有相关疑问，请联系所列联系人。如需获取数据文件，请点击此链接跳转至CDIAC数据转换网站：http://cdiac.ess-dive.lbl.gov/trends/otheratg/blake/blake.html