numerous studies into the effect of urban heat island effect and microsite influences find they have negligible effect on long-term trends, particularly when averaged over large regions.
numerous studies into the effect of urban heat island effect and microsite influences find they have negligible effect on long-term trends, particularly when averaged over large regions.
urban heat island:310
while the "heat island" warming is an important local effect, there is no evidence that it biases trends in the homogenized historical temperature record.