All by using local temp agencies, with a twist that can work in any city, in any economy. (careerdigital.com)
That's what is already done to measure temperature — logging local temps when attached to a rock underwater as often as every second — to register very local changes that can have big impacts. (scientificamerican.com)
The divergent MXD tree - rings show good correlation to local temps prior to divergence. (climateaudit.org)