Letter: Global temps going up
Apparently some members of our community still do not believe that climate warming is occurring. The latest (March) issue of EOS, the monthly summary of science news published by the American Geophysical Union, summarizes three recent reports on the subject which all state that the “earth’s average surface temperature in 2017 placed second or third highest on record.”
NASA’s (National Aeronautics and Space Administration) analysis showed 2017 to be the second-hottest year compared to 1951-1980 by 1.6 degrees F. The size of the temperature increase was calculated from more than 6,000 weather stations, ship- and buoy-based observations of sea surface temperatures, and measurements across Antarctic research stations.
The National Oceanic and Atmospheric Administration (NOAA) ranked 2017 as the third-warmest year on record with an increase of 1.5 degrees F. compared to the 20th century average (1901-2000). Internationally, the World Meteorological Organization calculated the second highest ever increase of 2.2 degrees F. compared to the preindustrial era.
The NASA and NOAA studies also showed that the upper ocean layer reached its largest heat content on record in 2017. It is well known that the ocean captures the excess energy trapped in the atmosphere by greenhouse gases. Thus scientific measurements of both the earth’s land and ocean surface indicate that global warming is occurring and that this warming correlates with the atmospheric increase in greenhouse gases.
Dr. Peter Kroopnick