Monthly Archives: May 2019

Will the earth’s natural resources run out?

“Last week, the World Wildlife Fund proclaimed May 10 to be Europe’s Overshoot Day, the day that Europe consumed its portion of Earth’s resources for the year. The WWF, the United Nations and universities continue to warn that modern society is rapidly depleting our natural resources. But instead, trends show that for all practical purposes, Earth’s resources will never run out.” click here

Heat island effect on surface temperature measurements underestimated

R.D. Leeper, J. Kochendorfer, T. Henderson, M.A. Palecki. Impacts of Small-Scale Urban Encroachment on Air Temperature Observations. Journal of Applied Meteorology and Climatology. https://doi.org/10.1175/JAMC-D-19-0002.1

A field experiment was performed in Oak Ridge, TN, with four instrumented towers placed over grass at increasing distances (4, 30, 50, 124, and 300 m) from a built-up area. Stations were aligned in such a way to simulate the impact of small-scale encroachment on temperature observations. As expected, temperature observations were warmest for the site closest to the built environment with an average temperature difference of 0.31 and 0.24 °C for aspirated and unaspirated sensors respectively. Mean aspirated temperature differences were greater during the evening (0.47 °C) than day (0.16 °C). This was particularly true for evenings following greater daytime solar insolation (20+ MJDay−1) with surface winds from the direction of the built environment where mean differences exceeded 0.80 °C. The impact of the built environment on air temperature diminished with distance with a warm bias only detectable out to tower-B’ located 50 meters away.

The experimental findings were comparable to a known case of urban encroachment at a U. S. Climate Reference Network station in Kingston, RI. The experimental and operational results both lead to reductions in the diurnal temperature range of ~0.39 °C for fan aspirated sensors. Interestingly, the unaspirated sensor had a larger reduction in DTR of 0.48 °C. These results suggest that small-scale urban encroachment within 50 meters of a station can have important impacts on daily temperature extrema (maximum and minimum) with the magnitude of these differences dependent upon prevailing environmental conditions and sensing technology.

“…no dangerous warming in the past two decades,…even the past 200 years”

“It can, however, be declared with absolute certainty that there has been no dangerous warming in the past two decades, and even in the past 200 years. The post-Little Ice Age warming trend has been anything but dangerous, causing hardly any negative impact on the ecosystem or the life forms. Instead, it has brought lengthened growing seasons, more abundant vegetative growth, and more abundant food for people and everything else.” click here

End of the world extended to 2030

“According to the leading expert in Congress, the world will end in the year 2030.” click here

Global cooling linked to species extinction

“In the past it has been widely reported that high and abruptly changing CO2 concentrations led to climate conditions that were “too hot for complex life to survive” on the planet.

More recently, though, scientists have determined that the opposite may have been true: mass extinction events occurred during periods of global cooling, expansive ice sheet growth, and marine-habitat-destroying sea level drops of more than 100 meters.” click here

Brazil leads the way back to climate reality

“In Brazil, President Jair Bolsonaro is “dismantling” environmental agencies and missions. Brazil pulled out of hosting the 2019 U.N. climate summit, and has now canceled a United Nations climate change event that was to be held in August.” click here

Is the Green New Deal realistic?