Poster Number 81
Insolation cycles (Milankovitch insolation intensities) and ice core concentrations of greenhouse gases offer measures of radiant energy heating to compare with the global heat balance. The remarkable differences between very slowly changing ~100,000 year insolation cycles and the saw-toothed global temperature records, replete with major and minor abrupt trend reversals within each insolation cycle, demonstrate timing and importance of two additional energy related processes, changes in equilibrium states of ocean circulation, and related impacts on global albeto. Paleoclimate characteristics (in time and space) and radiant energy states constrain major abrupt reversals in the global heat budgets to these processes. The interglacial climatic state of three prior Milankovitch insolation cycles have been terminated abruptly at plus 2° C to 3° C temperatures above the present temperatures. The lowest (plus 2° C) was associated with the strongest insolation cycle the most rapid global warming.
Greenhouse gas concentrations are ~110 ppm above the concentration required for global heat balance (stabilized temperatures). Reducing or eliminating anthropogenic greenhouse gas emissions will not prevent a continuous global temperature rise until the critical global temperature is reached! It's Just earth business as usual with too much help from us.