(For those still trying to keep up,
if specific humidity was constant, the measured values would be a straight vertical line going through the zero).
Not exact matches
So what
if you calculate
specific humidity based on 1940 instead of 1950 to 1981?
If the initial
specific humidity was underestimate, that's looks like what would happen.
Hoskins:
If the tropical near surface
specific humidity over tropical land has not gone up (Fig 5) presumably that could explain why the expected amplification of the warming in the tropics with height has not really been detected.
If» a warmer world will have an atmosphere with more water vapor,» why has atmospheric water vapor declined since satellite measurements began in 1983, and why has tropospheric relative and
specific humidity declined since 1948?
If you actually look at the data for the last few decades... there's evidence for rising
specific humidity in the upper troposphere, but we don't have enough data about relative
humidity to say either way.
We know R1 + R2 = R = εσT ^ 4 We could use a «bulk equation» for L
if we knew the air temperature &
specific humidity + wind speed at reference heights.
If relative
humidity remains constant, CO2 induced warming would cause increasing
specific humidity and a strong positive feedback.
This led to the next set of questions, such as: How can the wv be increasing
if the reported
specific humidity / temperature are not.
If the relative
humidity is held fixed as the air is warmed, the implied increase in
specific humidity of the air will further increase the downward infrared flux, though it might somewhat decrease the latent flux.
You get the THS only
if the lapse rate decreases as temperature goes up because the moist lapse rate gets lower as
specific humidity goes up (higher energy content / kg).