notEnuf

The earth is accumulating heat energy in the atmosphere and the oceans, the timing coincides with industrialization. Increased carbon dioxide reduces heat loss. (greenhouses grow tropical plants in the winter because of this) I say these are facts, are we aruging this? How that affects humans and biological life on the planet is yet to be seen. An increase in heat energy in the atmosphere increases molecular activity. This is why the air is smooth in the winter. Has that heat energy raised the level of turbulance and convection? I don't know but I definately think it could be enough to be noticable and will over time. Try flying in the atmoshere of Venus, at some point more heat enegy will create more violent air molecule interaction.

I think physics and media hype can exist at the same time. Which is the greater threat, I have no idea.

Hotel Kilo

You don't garden much do you? Greenhouses are not warm becasue of CO2. They do pump CO2 into the commercial ones because it is what plants crave. It fosters faster growth and production. Nothing more.

notEnuf

The glass allows light and heat in and contains it. The CO2 helps keep it in, along with other obvious benefits. You don't live in the north do you? CO2 is a heat sink. It absorbs and radiates heat easily. When it gets dark it radiates the heat back into the environment. That's how green houses retain heat at night. You are probably talking about grow houses that don't use natural light. In the atmoshere it radiates in all direction including back down to the surface, which prevents heat loss.

Hotel Kilo

THat's not what happens at all. The green house heats without it just fine. When you close up your car and leave the windows closed, it's not the CO2 that causes the inside to heat up. Green houses are no different. We don't pump CO2 into our ovens to make them heat up either.

The CO2 is used only to promote growth at a more rapid pace. Especially in larger commerical operations. No one is pumping CO2 in there to create "more heat".

notEnuf

I edited my post above to further explain. Yes, CO2 helps regulate heat in a greenhouse. Water vapor does the same thing.

CBreezy

It's called the greenhouse effect. Not one person is saying the only reason a greenhouse stays warm is because of cO2. CO2 (and methane to a much larger degree) act LIKE the glass in a greenhouse. Radiation enters the glass and is then reflected back inward instead of allowing it to radiate out. A greenhouse gas, like the glass in a greenhouse, traps heat energy in the atmosphere and radiates it back down to earth instead of allowing it to escape into space.

Vsop

point of order: Brawndo is what plants crave

Hotel Kilo

CO2 is not used to regulate heat inside a green house. We use fans and or slotted windows for that. Occasionally we need to add some heat, but we use conventional propane type heaters for this. CO2 is only added to foster rapid growth of the plants, nothing more. Done with the derail here.

Back on topic, nothing from DALPA yet out of the MEC meeting. Least when I checked about 5 minutes ago.

Hotel Kilo

All a green house for plants does is allow the plants and other surfaces to absorb the heat from the sun (light energy). We typically use darker floor coverings/brick/grave; darker soils etc in our green houses to facilitate this purpose. CO2 doesn't enter the equation but is used to promote more rapid growth when required.

Beacasue the green house is enclosed the heat is not able to escape out of the containment (glass or plastic depending on the application) becasue heat energy is at a different wavelength than light energy. Some heat does escape thru lack of proper sealing but that is only a factor in colder climate where additional supplemental heating may be required from conventional heaters. We use circulating fans to continually bring in fresh air from the outside. We supplement the house with CO2 when required. Fans that bring in the outside air also provide a supply of CO2 - for the plants - but to get quicker growth, supplemental CO2 is sometimes required.

Hotel Kilo

It's got electrolytes!!

Ok, with that, I'm done with the derail.