The phrase
"decadal trend" refers to a specific pattern or change in something over a period of ten years. It is used to describe how a particular phenomenon, such as temperature or population, has been consistently increasing or decreasing over a decade.
Full definition
According to Dr. Natali, «Our results show that while permafrost degradation increased carbon uptake during the growing season, in line with
decadal trends of «greening» tundra, warming and permafrost thaw also enhanced winter respiration, which doubled annual carbon losses.»
So we should be able to compare 1991 - 00 (minus Pinatubo years) to 2001 - 09 and get a fairly accurate, ENSO - balanced look
at decadal trends.
The trends in LW and SW are larger than the trend in NET, but it should be noted that
getting decadal trends out of satellite data of this sort is difficult.
For his part, Karl acknowledges that it is important to investigate how short - term effects might
impact decadal trends, but says that these short term trends do not necessarily elucidate the long - term effects of rising greenhouse - gas concentrations in the atmosphere.
Tracking decadal trends in both methane and hydroxyl, Frankenberg and his colleagues noted that fluctuations in hydroxyl concentrations correlated strongly with fluctuations in methane.
Combining the STORM model with analysis of the rainfall data set allowed the investigators to gain insights
into decadal trends in monsoonal rainfall intensity under climate change.
Even in scenario A2 the models produce still slightly negative or near zero
decadal trends until 2040 or so.
Decadal trends also differ greatly between POLES and TOVS primarily owing to the discontinuation of ice station data in the POLES dataset after 1991.
Linear decadal trends in atmospheric and surface parameters for six Arctic seas during spring (MAM) derived from satellite sounder retrievals from 1979 to 2005.
Furthermore
oscillating decadal trends in wind strength can further magnify biological effects causing pH to trend independently of atmospheric CO2.
They found that, in the model, the striking
SPNA decadal trend reversal from 1994 - 2004 to 2005 - 2015 arose largely from variable heat transports by the ocean's midlatitude horizontal gyre circulation.
Seasonality of tropical
Pacific decadal trends associated with the 21st century global warming hiatus (Journal of Geophysical Research - Oceans)
Averaging a number of runs in the ensemble still smears interannual variability but it seems to me that would still leave a decent indication of
decadal trend bias.
«Because of the pronounced effect of interannual noise
on decadal trends, a multi-model ensemble of anthropogenically - forced simulations displays many 10 - year periods with little warming.