Doubling the atmospheric CO2 concentration from 280 ppm to 560 ppm results in just a 1-2% perturbation to the Earth’s 240 W/m² energy budget. Richard Siegmund Lindzen (born February 8, 1940) is an American atmospheric physicist known for his work in the dynamics of the middle atmosphere, atmospheric tides, and ozone photochemistry.He has published more than 200 scientific papers and books. Lindzen recently published another scientific paper (Lindzen, 2020) in The European Physical Journal criticizing the current alarmism in climate science. 2020 SkS Weekly Climate Change & Global Warming News Roundup #26; Saharan dust storm expected to cause dangerous air pollution in U.S. this week; Archives. As described by a reviewer below, Another misleading claim made in the video is that “COOverall, several claims made in the video about climate change are incorrect, not supported by scientific evidence, or misleading to the viewer, as the reviewers detail below.At the 8 second mark, Dr. Lindzen claims that the climate has changed “remarkably little” over the past 30 years without any reference to what “remarkably little” is relative to. However, this time period has been cherry-picked to show “remarkably little” warming.Below is their graph overlain on the full satellite record (which began in 1978). more about the credibility rating A majority of reviewers tagged the article as: Inaccurate, Misleading. As Richard Lindzen has stated for years, the models fail to capture changes in clouds including changing cloud area and that the sizes of clouds are too small for grid scale modeling.

In the video, former MIT Professor Richard Lindzen claims “there is no evidence that COHuman-caused emissions of greenhouse gases and aerosols account for approximately 100% of the global warming trend observed since 1950 (see figure below)Lindzen also misleadingly claims that over the past 30 years, “the climate has changed remarkably little,” but does not specify what “little” is relative to. Published in PragerU, by Richard Lindzen on 8 May 2020 Three scientists analysed the article and estimate its overall scientific credibility to be ‘very low’. Nakamura’s work reinforces what many, including Lindzen, have stated. Dr. Richard Lindzen retired several years ago, and yet his immense contribution to the atmospheric sciences lives on. The consensus “proved” the hypothesis was correct, regardless of the evidence. Richard Siegmund Lindzen (* 8. The full satellite record shows that extending their graph in either direction (forward or backward in time) would reveal a clear warming trend.When these satellite derived temperature products (RSS and UAH in the graph below) are displayed as annual values and plotted on the same axis as the instrumental temperature datasets (Met Office, NASA and NOAA in the graph below), they largely agree with each other. Scientists were instead sufficiently skeptical about claims of climatically-induced planetary doom. To reinforce the point, the UK government hired Lord Nicholas Stern, a British economist, to produce an economic review of the impact of warming. This doubled-CO2 effect has less than 1/5th of the impact that the net cloud effect has.

The most recent Milankovitch cycle transition was that from the last glacial maximum about 20,000 years ago (when about a mile of ice was on top of Boston) to the Holocene climate starting about 10,000 years ago and this transition was characterized by a global warming of about 5 degrees Celsius.Now we can put the global warming of the past 30 years in context.

Climate Misinformation by Source: Richard Lindzen. So the warming of the past 30 years has been about 5 times (0.023/0.005 = 4.6) faster than the warming that occurred over the transition from the last glacial maximum to the preindustrial climate.I have made an animation placing contemporary global warming in the context of previous climate changes:Contemporary Global Warming placed in geological context. When put in proper context, it is not true that the climate has changed “remarkably little” over the past 30 years.Over the past 30 years, the global average temperature has warmed by about 0.7 degrees Celsius (red line from 1990 to 2020 in the global temperature dataset below):Now we want to put this 0.7 degrees Celsius warming over 30 years in context of other large climate changes in earth’s history. Dr. Richard Lindzen retired several years ago, and yet his immense contribution to the atmospheric sciences lives on. 0.7 degrees Celsius over 30 years is 0.023 degrees Celsius per year.

Additionally, Dr. Lindzen implicitly supports his claim of “remarkably little” warming with a misleading figure.