Climate Change: What’s Real and What’s Artificial?

Claim 7. Temperatures have risen faster in recent years than ever before.

Truth: Remember that there is no such thing as a global temperature. It is the average of all of the reporting stations all over the world. The rapid rise in temperatures in the 1990s directly coincides with a decrease in the number of Siberian weather stations reporting due to the break-up of the Soviet Union.


Number of World Reporting Stations & Average Temperatures (vertical bars)

Source: Ross McKitrick,

Additionally, the “hottest year on record”, 1998, was an El Nino year so it was naturally hotter than the years just before and after. Another “cause” of rising average global temperatures is the urban heat island effect. Cities are hotter than rural areas. Many of the reporting stations that were once in undeveloped rural areas have experienced either suburban or urban development, or the stations have been moved to more urban settings. It is well documented that some have been, seemingly intentionally, relocated near or at heat sources such as paved parking lots and air conditioners.

One reason for relocation near buildings or other structures could be that new automatic-reporting equipment needs to be connected by cable. Rather than dig up parking lots or roads to install units in a grassy or protected area, many have opted to locate them where they can be directly connected without involving costly excavation, although such sites do not meet the stated requirements. Instead of excluding data from stations that are poorly situated, a convoluted mathematical algorithm (scheme) is used to “correct” it to presumed pre-industrial levels. See illustrations below.

Urban Heat 6Urban Heat 8Urban Heat 7

Urban area plus mathematical correction algorithm equals pristine nature

Source: “The Influence of anthropic surface processes and inhomogeneities on gridded global climate data” Slide 21, Powerpoint presentation to the American Chemical Society, Denver CO via Webinar, August 28 2011 by Ross McKitrick, Department of Economics, University of Guelph, Guelph ON Canada

Proposed rating of reporting stations with regard to surroundings:

Urban Heat 5

Figure 3. U.S. Historical Climate Network (USHCN) station exposure at sites representative of each CRN class: CRN 1, a clear flat surface with sensors located at least 100 m from artificial heating and vegetation ground cover <10 cm high; CRN 2, same as CRN 1 with surrounding vegetation <25 cm and artificial heating sources within 30 m; CRN 3, same as CRN 2, except no artificial heating sources within 10 m; CRN 4, artificial heating sources <10 m; and CRN 5, sensor located next to/above an artificial heating source.

Source:  “Analysis of the impacts of station exposure on the U.S. Historical Climatology Network temperatures and temperature trends,” Souleymane Fall, Anthony Watts, John NielsenGammon, Evan Jones, Dev Niyogi, John R. Christy,5and Roger A. Pielke Sr., Journal of Geophysical Research, Vol. 116, D116, D14120  doi:10.1029/2010JD015146, 2011

See other examples below of poor placement of temperature reporting stations from “Is the Western Climate Establishment Corrupt?” The public might not understand the science, but they do understand cheating, Dr. David Evans, 11 Nov 2010 (last updated 28 Feb 2011) Web Address:

 Urban Heat 4

Urban Heat 1

Urban Heat 2


Urban Heat 3

Carbon Dioxide is plant food and increases growth rates

Animals exhale Carbon Dioxide (CO2) and breathe Oxygen (O2), while plants use CO2 and exhale O2. Professional greenhouses often add extra CO2 to increase growth rates. Increased plant growth removes much of the CO2 released into the atmosphere. Between pre-industrial and present times, studies show an average of 15% increase in plant growth rates, with some species increased many times that, e.g. young pine trees. Increased plant growth rates and wider distribution of arable (farmable) land due to warming as well as improved farming practices can solve the so-called overpopulation problem. If much of the data used in the climate models are based on proxy data from tree rings, and growth has been increased by CO2, does that mean that the data is artificially skewed toward “warmer” results? Hmmm.

Plant Growth Chart 1.png

Figure 1. Comparison of Plant Growth at Pre-industrial CO2 levels (295 ppm in pink), at 383 ppm and 600 ppm (in blue) in Dry Wheat, Wet Wheat, Oranges, Orange Trees and Young Pine Trees. Note Percent increases.
Source: Review Article: “Environmental effects of increased atmospheric carbon dioxide,” Willie Soon (1), Sallie L. Baliunas(1), Arthur B. Robinson (2), Zachary W.Robinson (2) Climate Research. 13, 149-164, (1999)

(1) Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138

(2) Oregon Institute of Science and Medicine, 2251 Dick George Road, Cave Junction, Oregon 97523

A. Critics created the “progressive nitrogen limitation hypothesis,” which assumes that increased growth rates of trees would deplete poor soils of nitrogen, thus mediating the positive effects of increased CO2. This is a scenario based on theory, not reality, which stubbornly refuses to support the hypothesis. Many studies[1] show that, contrary to the hypothesis, although roots grow deeper and produce more fine hairs, soil and forest floor are enriched in nitrogen from biological sources, i.e. increased root mass and leaf litter supporting beneficial microbes in the soil.

B. One benefit of increased CO2 is that the stomata (openings) of leaves, which take in CO2 and emit water vapor and oxygen, are reduced, leading to less water loss, enhanced water use and improved tolerance to dryer conditions. At elevated CO2 levels, stomata do not need to be open as far to allow sufficient CO2 in for photosynthesis and, as a result, less water is lost through transpiration[2]. In controlled studies, an additional benefit of reduced stomata openings is a reduction of ozone damage.

C. The increased rate of growth of plants, from forests to sea algae, results in more of certain cooling aerosols being produced. These include Carbonyl Sulfide (COS) from soil and seas that become highly reflective sulfate in the stratosphere to reflect more solar radiation back into space, Iodo-compounds from sea algae that nucleate clouds to reflect more solar radiation back into space, dimethyl sulfide (DMS), from seas that nucleates clouds and other aerosols such as isoprene from trees with similar effects.

D.  Hormesis is a phenomenon, commonly seen in medicine and nutrition, where a low concentration or dose results in a positive effect, but a larger dose results in damage. For instance, some salt and water are necessary to good health, but beyond a certain point, ingesting more can be harmful or fatal. The effect of CO2 on plant life appears to be one such system. Increased CO2 obviously benefits plant life, but it is uncertain at what level CO2 might have a detrimental effect on growth. In professional greenhouses and experiments, even ten times the current level is still beneficial.

Hormesis Chart 1

Figure 2.  Illustration of how Carbon Dioxide is beneficial to plants through Hormesis. Horizontal Axis is Increasing CO2 level.

Source:’s Response to Increasing CO2: An Example of Hormesis? August 11th, 2014

[1] Example: Phillips, R.P., Finzi, A.C. and Bernhardt, E.S. 2011. “Enhanced root exudation induces microbial feedbacks to N cycling in a pine forest under long-term CO2 fumigation”. Ecology Letters 14: 187-194.

[2] See review article of research papers: “Responses of agricultural crops to free-air CO2 enrichment” Kimball, B.A., Kobayashi, K. and Bindi, M., Advances in Agronomy 77: 293-368 2002.