https://science.nasa.gov/earth/climate-change/the-raw-truth-on-global-temperature-records/
this should ease your tiny mind
So Many Climate Data Sets, So Little Disagreement
Currently, there are multiple independent climate research organizations around the world that maintain long-term data sets of global land and ocean temperatures. Among the best known are those produced by NASA, the National Oceanic and Atmospheric Administration (NOAA), the U.K. MeteoroEach organization uses different techniques to make its estimates and adjusts its input data sets to compensate for changes in observing conditions, using data processing methods described in peer-reviewed literature.
Remarkably, despite the differences in methodologies used by these independent researchers, their global temperature estimates are all in close agreement. Moreover, they also match up closely to independent data sets derived from satellites and weather forecast models.logical Office's Hadley Centre/Climatic Research Unit (CRU) of the University of East Anglia, and Berkeley Earth, a California-based non-profit.
The procedure used to calculate GISTEMP hasn’t changed significantly since the mid-1980s, except to better account for data from urban areas. While the growing availability of better data has led to adjustments in GISTEMP’s regional temperature averages, the adjustments haven’t impacted GISTEMP’s global averages significantly.
While raw data from an individual station are never adjusted, any station showing abnormal data resulting from changes in measurement method, its immediate surroundings, or apparent errors, is compared to reference data from neighboring stations that have similar climate conditions in order to identify and remove abnormal data before they are input into the GISTEMP method. While such data adjustments can substantially impact some individual stations and small regions, they barely change any global average temperature trends.
