However, the strength of the correlation
between specific humidity variations and the temperature variations at the same level appears to be strongly height dependent.
S2 in the SI Appendix) with the independently observed q L that was used in Fig. 4 to motivate the relation
between specific humidity and precipitation (Eq.
Not exact matches
Specific humidity content of the air has increased, as expected as part of the conventional water vapor feedback, but in fact relative
humidity also increased
between 1950 and 1990, indicating a stronger water vapor feedback than given by the conventional assumption of fixed relative
humidity.
However, the critical threshold R C is independent of ɛ, and thus the calculation depends only on relatively robust averaged values of precipitation, net radiation, average temperature difference
between land and ocean,
specific humidity over ocean, and the natural constants ρ, L, and C p.
Consistent with reanalysis data (Fig. 4) and theoretical considerations (36, 39), continental rainfall is assumed to be proportional to the mean
specific humidity within the atmospheric column The effect of an offset
between these quantities does not change the model behavior qualitatively (see SI Appendix).
The analysis is restricted to latitudes
between 50S and 50N and to altitudes at which the zonal - average
specific humidity is greater than 0.5 g / kg.
From a few cursory examinations of geographical differences
between the models, much of the differences in monthly - mean
specific humidity (and many other variables)
between the reanalysis products occurs in the tropics.