7/3/12, "Stratospheric water vapor and climate: Sensitivity to the representation in radiation codes," Journal of Geophysical Research, AGU
- Stratospheric water vapor is poorly represented in many broadband radiaton codes
- Spectral sampling rate is important for LBL calculations for strat. water vapor
- Radiation code errors for stratospheric water vapor may cause temperature biases
There has been considerable interest in the climate impact of trends in stratospheric water vapor (SWV). However, the representation of the radiative properties of water vapor under stratospheric conditions remains poorly constrained across different radiation codes....
The stratosphere-adjusted radiative forcing differs by up to 96% across the less detailed codes. The results highlight an important source of uncertainty in quantifying and modeling the links between SWV trends and climate."...
7/2/12, "Settled science update: Effect of water vapor varies up to 96% in different computer models," HockeySchtick
"A paper published today in the Journal of Geophysical Research reports that the computer-modeled effect of stratospheric water vapor upon the climate ["radiative forcing"] varies by up to 96% between various computer model codes.
via Tom Nelson