Weather data collected by sending weather balloons up in the atmosphere
is not an example of proxy data.
Proxy data is the data which is collected by scientists known as
paleoclimatologists from people who record climatic variations. The data
collected usually helps to shed more light on the climatic history of a place.
It is also used to identify the organism and tells its origin. Examples of proxy
data include fossils including pollen and leaves,corals, ice cores, tree rings
etc.
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