The mosquito warms the elephant!
09/27/2019 08:33 - Posted by Tom van Leeuwen
The combined mass of the Earth's oceans is 1.35 x 1024
The specific heat of ocean water is 3.993 Joule / gram / Kelvin.
So, it takes 5.39055 x 1024
Joules to warm the oceans 1 Kelvin.
The total mass of the Earth's atmosphere is 5.1480×1021
The specific heat of the atmosphere is 1.005 Joule / gram / Kelvin.
So, it takes 5.17374 x 1021
Joules to warm the atmosphere 1 Kelvin.
The atmosphere should cool by 1000 °C
in order to warm the oceans 1 °C.
So, the whole concept of warming the oceans by a supposed enhanced greenhouse effect in the atmosphere is absurd!
, it's like trying to warm an Olympic-sized swimming pool with a hairdryer. It's like saying a mosquito warms an elephant.
On the other hand, it just takes one-thousands of a °C of ocean cooling to warm the atmosphere by 1 °C. So, when trying to explain average temperature changes, you should know what happened to the ocean temperatures before reaching any conclusion.
The hypothesis of "man-made climate change" tells us that the increase in the concentration of CO2 enhances the greenhouse effect
of the atmosphere and has global warming
as a final result.
Since the beginning of the industrialized era around 1850, man emits relatively large amounts of CO2
into the atmosphere through the use of fossil fuels. The consequence of these emissions is that during that period, the concentration of CO2
in the atmosphere increased sharply from about 300 parts per million to more than 400 ppm, an increase of almost 40%. The average temperature increased in the same period more or less 1.5 °C with a small variation depending on the data source used.
Professor at the Geophysical Sciences department at the University of Chicago David Archer describes the band-saturation of the CO2
greenhouse effect. After that, everything goes wrong.
The first part of the lecture is very informative. Professor Archer explains in great detail how the CO2
greenhouse absorption works, it's logarithmic nature and the band saturation. He even shows on a working instance of the MODTRAN model how adding the first ppm of CO2
to the atmosphere has a huge impact on the atmosphere's energy balance. Adding more CO2
, the effect fades away.
Hydropower is one of the cleanest energy sources available. The only downsides known so far are the impact on the landscape and the risk of a dam breaking due to earthquakes. Carefully choosing the locations and high construction standards are needed to solve these problems.
Besides electricity generation, dams also help to regulate the water flow in the rivers, making them better navigatable and useful for irrigation.
So, overall it seems to be quite positive, but recent research has "discovered" a new downside to hydroelectricity and it's a usual suspect: Greenhouse gasses
For many people, a logarithmic relationship can be a fairly abstract concept. It is hard to imagine the implication that it has on the strength of the greenhouse effect that corresponds to the amount of CO2
that humanity emits into the atmosphere. Here we present a visualization to explain in a simple way what we are talking about.
is a greenhouse gas. The presence of CO2
in the atmosphere traps a part of the infrared radiation that the Earth's surface emits into space. The total greenhouse effect of the Earth's atmosphere is about 30 °C, without this effect, the temperature would be -15 °C instead of +15 °C, the actual current average temperature.
Water vapor is the most important greenhouse gas. CO2 provides 3 °C of heating, that is, 10% of the total effect
When the concentration of CO2
increases, its greenhouse effect also increases, but not in a linear fashion, but logarithmically
. For each increase in concentration, the effect on temperature is less and less.
Water vapor is the single most important greenhouse gas. It makes up 80% to 90% of the total greenhouse effect of the Earth's atmosphere.
Climate models depend on water vapor as a positive feedback for supposed CO2
warming. In these models, CO2
causes a tiny warming that causes the relative atmospheric humidity to increase. That increase in water vapor produces the catastrophic warming they predict.
The problem is that in the real world, while atmospheric CO2
-concentrations increased by almost 30% since the end of World War II, the relative atmospheric humidity has been stable at low altitudes and has even decreased at higher altitudes.