He could try to use ground measurements, he said, but it would be nowhere near as sufficient for the scope of his research. (businessinsider.com)
The study is the largest of its kind and the first to use a combination of satellite temperature data and long - term ground measurements. (sciencedaily.com)
This is why on - the - ground measurements collected continuously and over a long period of time are another must - have. (carbonbrief.org)