Environmental Priorities vs. ‘Climate Change’

It is a physical measure: Scientists determine the global average temperature by combining millions of air and sea surface measurements from land weather stations, ships, and ocean buoys, converting them into “temperature anomalies” (differences from a long-term baseline average), mapping them onto a global grid, and averaging the results. Major scientific organizations like NASA and NOAA independently analyze these records to track planetary warming. 
Data Collection

• Land stations: Thermometers record air temperatures about 1.5 meters above the ground at tens of thousands of weather stations.
• Ocean coverage: Floating buoys and ships measure sea surface temperatures.
• Satellite support: Satellites help fill data gaps and monitor broader atmospheric layers. 

Calculating Anomalies Instead of Absolute Values

• The baseline concept: It is hard to average absolute temperatures because a mountain peak is naturally colder than a coastal city.

• The math: Scientists subtract the local historical baseline average (often a 30-year span like 1951–1980 or 1991–2020) from each new reading.

• The result: This difference is the anomaly showing how much warmer or cooler a specific place is compared to its normal state.

Grid Mapping and Adjustments

• Grid systems: The Earth’s surface is split into equal grid cells.

• Weighting: Data points are mathematically weighted by the area of the grid box so that polar regions and the equator balance properly.

• Bias correction: Scientists adjust data to filter out artificial warming caused by urban growth around a station (the urban heat island effect).