To ensure that data sets can be relied on, it is important to have a full understanding of the uncertainties. ...While historical sensors can provide critical information of the state of the planet during a period of relatively rapid climatic change, science and society need to know the degree of certainty that can be ascribed to an environmental change inferred from historical Earth Observation data. This is a problem for which metrology can provide solutions.'
NPL Training Course Introduction, Climate Data Records from Satellites: A Metrological Approach