LETTER: Rising CO2 and temperatures not necessarily linked

A missing bit of information in the article, Carbon dioxide at highest levels for over 2.5 million years, expert warns of 100 years of disruption, is that from about 1400 AD until about 1850 AD, the Earth was in a period called the Little Ice Age.

Climate scientists have not determined what caused this cool period. The onset was sudden. It happened over the course of about 100 years. The atmosphere was cooler during this period, by about one degree Celsius, than what it had been before 1400 AD and is only now getting back to the normal temperature for Earth in recent history.

READ ALSO: Farming, climate change top new North Saanich councillor’s agenda

The cold Little Ice Age, at about one degree cooler, is not a temperature that we want to return to. In 1850, the ending of the Little Ice Age, is about when thermometers were first available, and that cold time of 1850 is climate scientists’ starting point for recorded Earth temperatures.

READ ALSO: Top 10 Climate Change myths debunked

The onset of the Little Ice Age was quite sudden, as has been its retreat. There is no explanation for it, and the level of CO2 in the atmosphere could not have caused the onset or the start of the retreat. Maybe it was related to the sun’s output.

There needs to be more investigation into the relationship between CO2 levels in our atmosphere and temperature, as the correlation between them is not as direct as climate scientists have theorized.

Earth has experienced little to no temperature increase since 1998, even as our atmospheric CO2 level has continuously risen from about 365 parts per million (ppm) in 1998 to 410 ppm today.

The current 410 ppm of CO2 in our atmosphere, even though it is higher than Earth has had in thousands of years, is still a very small concentration.

Bill Wilson

Saanichton

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Province buys Paul’s Motor Inn to house Victoria’s homeless population

Inn is the second hotel the province has purchased to support vulnerable community

Sidney blocks off parking spaces to create more sidewalk

Additional measures to create more outdoor space for restaurants and cafe on way

Gift card scam email nearly dupes Oak Bay resident of $300

Fraud attempt posed as familiar friend

Telus headquarters to come to Victoria in ‘landmark building’ development

City sells land on coroner of Douglas and Humboldt streets for $8.1 million

B.C. records four new COVID-19 cases, Abbotsford hospital outbreak cleared

Four senior home outbreaks also declared over, eight still active

Friendly Cove and Kyuquot will remain closed until further notice

Transition of other B.C. communities will be monitored before a decision to ease restrictions

Gold River organizes a shop local initiative to creatively boost economy

Local purchases can earn shoppers $200 gift certificates to be spent on businesses within Gold River

Young killer whale untangles itself from trap line off Nanaimo shore

DFO marine mammal rescue unit arrived as whale broke free from prawn trap line

About 30% of B.C. students return to schools as in-class teaching restarts amid pandemic

Education minister noted that in-class instruction remains optional

Trudeau avoids questions about anti-racism protesters dispersed for Trump photo-op

Prime minister says racism is an issue Canadians must tackle at home, too

B.C.’s Law Enforcement Torch Run for Special Olympics goes virtual

The annual event partnering RCMP with Special Olympians is dramatically altered by COVID-19

Most Read