We can provide you with available measurements and 3 - D diagrams to give you an idea of what your room will look like after the installation. (knottyaldercabinets.com)
Even global surface temperatures (which is how Spencer is likely measuring «global warming», although they only account for about 2 % of the Earth's warming), have warmed about 0.2 °C over the past 15 years, according to the best available measurements. (skepticalscience.com)
While these methods are heavily used, there are concerns regarding the distributions of available measurements, how well these sample the globe, and such issues as the degree to which the methods have spatial and seasonal biases or apparent divergence in the relationship with recent climate change. (ipcc.ch)