Manmade Global Warming - New Extremes, page-14

A favorite technique used by deniers of manmade global warming is to criticize past projections of temperature by climate scientists. Typically a range of scenarios are modeled using different key inputs that naturally produce a range of outcomes.

deniers will always be able to cherrypick an outcome to suit their purpose and setting honesty aside and by relentless repetition in the denier echo chamber come to hoodwink themselves.

But NASA reported early in 2020 that an evaluation of global climate models used to project Earth’s future global average surface temperature over the past 50 years have been quite accurate.

worse yet for the denier cohort, trend temperature increases can now be simply confirmed by checking temperature records.

an increase in Earth’s average surface temperature sharply increases the likelihood of more days of extreme temperatures, as a BBC global analysis confirmed earlier this month.

many outlets reported the BBC analysis, under a headline that usually talked of the number of days over 50C degrees doubling since the 1980s. What follows is the start of yahoo.com’s coverage a few days ago.

”The number of extremely hot days every year when the temperature reaches 50C has doubled since the 1980s, a global BBC analysis has found. They also now happen in more areas of the world than before, presenting unprecedented challenges to human health and to how we live.

”The total number of days above 50C (122F) has increased in each decade since 1980. On average, between 1980 and 2009, temperatures passed 50C about 14 days a year.

”The number rose to 26 days a year between 2010 and 2019.

“In the same period, temperatures of 45C and above occurred on average an extra two weeks a year.

””The increase can be 100% attributed to the burning of fossil fuels," says Dr Friederike Otto, associate director of the Environmental Change Institute at the University of Oxford.

”As the whole world warms, extreme temperatures become more likely.

”High heat can be deadly for humans and nature, and cause major problems to buildings, roads and power systems.Temperatures of 50C happen predominantly in the Middle East and Gulf regions.

”And after record-breaking temperatures of 48.8C in Italy and 49.6C in Canada this summer, scientists have warned that days over 50C will happen elsewhere unless we cut fossil fuel emissions.”