You can't have a Scientific "proof" without Science..
If the data does not support the idea or hypothesis, you formulate a new hypothesis, not new data..
Inquiry Launched Into Global Temperature Data Integrity
The International Temperature Data Review Project
April 26, 2015
London, 26 April 2015 – The London-based think-tank the Global Warming Policy Foundation is today launching a major inquiry into the integrity of the official global surface temperature records.
An international team of eminent climatologists, physicists and statisticians has been assembled under the chairmanship of Professor Terence Kealey, the former vice-chancellor of the University of Buckingham. Questions have been raised about the reliability of the surface temperature data and the extent to which apparent warming trends may be artefacts of adjustments made after the data are collected. The inquiry will review the technical challenges in accurately measuring surface temperature, and will assess the extent of adjustments to the data, their integrity and whether they tend to increase or decrease the warming trend.
Climatologists have long been aware of the poor state of global surface temperature records and considerable effort has been put into adjusting the raw data to correct known errors and biases. These adjustments are not insignificant. For example it has been noted that in the temperature series prepared by NOAA for the USA, the adjusted data exhibits a much larger warming trend than the raw data.
http://www.ncdc.noaa.gov/img/climate/research/ushcn/ts.ushcn_anom25_diffs_urb-raw_pg.gif
It turns out that these methods are mainly statistical, not well justified by experiments and are rarely supported by metadata. In many of the cases studied the proposed corrections are not even statistically significant.
Steirou, E., and D. Koutsoyiannis, Investigation of methods for hydroclimatic data homogenization, European Geosciences Union General Assembly 2012, Geophysical Research Abstracts, Vol. 14, Vienna, 956-1, European Geosciences Union, 2012.
https://www.itia.ntua.gr/en/docinfo/1212/