The warming in the tropical upper troposphere over the past 30 years is strongest near the Indo-Pacific warm pool, while the warming trend in the western and central Pacific is much weaker. In the lower stratosphere, these trends are reversed: the historical cooling trend is strongest over the...
Using the S08 methodology on up-to-date data, we find a statistically significant discrepancy between observations and models with respect to trends in the UAH data, as well as lapse rate trends comparing either RSS or UAH to the HADCRUT3v land-ocean surface trend....
The tropical upper troposphere has already warmed about 1 K during the first two decades of the 21st century. The tropospheric warming extends into the lower stratosphere in the tropics and southern hemisphere mid-latitudes, forming a prominent hemispheric asymmetry in the temperature trend structure....
Correction to "An alternative explanation for differential temperature trends at the surface and in the lower troposphere" Temperature at one station in the basin shows increasing trends at all temporal resolution. We argue that the decreasing trend in runoff might be explained... Philip,J.,Klotzbac...
1a also includes a low-pass filtered time series (retaining variability with periods of 6 years and longer, black line) and this indicates prominent decadal to multidecadal variability in tropical TPTs rather than a consistent long-term trend. The power spectrum of the MERRA TPT time series (...
An index designed to identify this signal has been computed from the station data. This index has positive trend at most of the stations, consistent with the greenhouse effect. Over the hemisphere, the signal is statistically significant. However, opposing temperature variations in the troposphere ...
This discrepancy is substantially reduced when (1) atmosphere-only simulations are examined or (2) the trends are considered as an amplification of the surface temperature trend with height. Using these approaches, it is shown that within observational uncertainty, the 5-95 percentile range of ...
thattropospherictemperaturetrendsinthetropicsare greaterthanthesurfacewarmingandincreasewithheight. Ouranalysisindicatesthatthenear-zerotrendfromSpencer andChristy’sMSUchannel-2angularscanningretrievalfor thetropicallow-middletroposphere(T 2LT )isinconsistent ...
In contrast to the relatively unchanging expectations of surface and tropospheric warming primarily induced by greenhouse gas increases, stratospheric temperature change expectations have arisen from experiments with a wider variety of model types, showing more complex trend patterns associated with a greater...
The largest trend spread among the seven CMIP5 simulations is seen in both the south- and north-polar regions in the stratosphere and troposphere. The tropospheric spread values are generally smaller than the stratospheric spread values. 展开 ...