Monthly mean atmospheric D14CO2 at Jungfraujoch and Schauinsland from 1986 to 2016
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'14CO2 observations at Jungfraujoch high altitude research station in the Swiss Alps (3450m a.s.l.) and at Schauinsland observatory (1205 m a.s.l.) in the German Black Forest are conducted to monitor the background 14CO2 level over Europe and define the reference for regional estimates of fossil fuel CO2.  The record is also used for post-bomb dating of organic material (e.g. forensic studies)' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["carbon dioxide","continental background air","post bomb dating","Radiocarbon"]} <|eot_id|>
 Here is the Description of a dataset. Description:'14CO2 observations at Jungfraujoch high altitude research station in the Swiss Alps (3450m a.s.l.) and at Schauinsland observatory (1205 m a.s.l.) in the German Black Forest are conducted to monitor the background 14CO2 level over Europe and define the reference for regional estimates of fossil fuel CO2.  The record is also used for post-bomb dating of organic material (e.g. forensic studies)' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
14CO2 observations at Jungfraujoch high altitude research station in the Swiss Alps (3450m a.s.l.) and at Schauinsland observatory (1205 m a.s.l.) in the German Black Forest are conducted to monitor the background 14CO2 level over Europe and define the reference for regional estimates of fossil fuel CO2.  The record is also used for post-bomb dating of organic material (e.g. forensic studies)
carbon dioxide; continental background air; post bomb dating; Radiocarbon