These datasets are currently the main data sources used to construct the various weather station - based global temperature trend estimates. (oprj.net)
The NASA Goddard Institute for Space Studies (NASA GISS) is one of the five groups that currently publish global temperature trend estimates from weather station records, i.e., they produce one of the curves we showed you at the start of this essay in Figure 1. (globalwarmingsolved.com)
The government dataset, called the National Oceanic and Atmospheric Administration's Extended Reconstructed Sea Surface Temperature version 4, increased the sea surface temperature trend estimate over the last 18 years from 0.07 ° Celsius per decade to 0.12 ° Celsius per decade, partly because of adjustments for different types of measuring instruments. (aaas.org)