Sentences with phrase «for constant relative humidity»

Not exact matches

Though there are many caves, only a small number have the best conditions for climate study, including 100 percent relative humidity, constant temperatures, no cave winds, and the actual stalagmites — free of holes and decay — forming in the cave.

Fig 1 Days it takes (y - axis) for 50 % of flea eggs to hatch at different ambient temperatures (x-axis) while relative humidity is held constant at 75 %.

The heating / cooling / dehumidifier bill is about ten cents per square foot per year for a constant, perfect 72F 50 % relative humidity air conditioned interior.

Given the Clausius - Clapeyron relationship, the humidity of saturation increases roughly 8 % for every 1 °C, doubling for every 10 °C, where relative humidity remains roughly constant and therefore absolute humidity increases at 8 % per 1 °C.

They had built the first completely correct radiative - convective implementation of the standard model applied to Earth, and used it to calculate a +2 C equilibrium warming for doubling CO2, including the water vapour feedback, assuming constant relative humidity.

For example, the atmospheric warming due to increased CO2 might well be expected to increase water evaporation so as to keep Relative Humidity constant (albeit raising Specific Humidity), so amplifying the small warming effect of CO2 itself.

Climate models (for various obscure reasons) tend to maintain constant relative humidity at each atmospheric level, and therefore have an increasing absolute humidity at each level as the surface and atmospheric temperatures increase.

Can anyone elaborate on the remark «Climate models (for various obscure reasons) tend to maintain constant relative humidity at each atmospheric level»?

For example, common sense says that the amount of relative humidity of the atmosphere will remain constant as the earth warms from radiative forcing.

Water vapour does in fact change (roughly keeping relative humidity, as opposed to specific humidity, constant) and this has been shown in the real world as a function of volcanic cooling (Soden et al, 2002) and for longer term trends (Soden et al, 2005, discussed here), and is well reproduced in climate models.

But, I think it's quite reasonable to demand good evidence for these purported feedbacks and in the absence of that evidence assume the simple physics of radiation and humidity dependence at constant relative humidity hold.