Once KISS has been calibrated, it can be used to predict the climate consequences of future CO2 production by humans. To avoid the most serious consequences of climate change, temperature increases should be kept below 2 ºC (i.e. the global average should stay below 16 ºC).
The scenarios investigated by KISS assume that CO2 production increases steadily from today’s value until a date specified by the user: the year of peak carbon dioxide production. The default value of 2030 is very optimistic. What happens if you replace it by a more realistic estimate of 2050?