Sentences with phrase «noise ratios estimated»
It turns out that for the signal - to - noise ratios estimated for the individual tree - ring records, one would be hard pressed to cleanly isolate the volcanic cooling signal in individual records or even regional composites.
http://www.realclimate.org/ Not exact matches
We use observed estimates of the signal component of TLT changes and model estimates of climate noise to calculate timescale - dependent signal - to - noise ratios (S / N).
Our estimated signal - to - noise (S / N) ratios for global - scale TLT changes were less than 1.0 on the 10 - year timescale.
«Our estimated signal - to - noise (S / N) ratios for global - scale TLT changes were less than 1.0 on the 10 - year timescale (Figure 6C).
This may make the models almost irrelevant in estimating the low frequency «noise» important for the longer period S / N ratio.
Using these estimates, we calculate signal - to - noise (S / N) ratios to quantify the strength of the fingerprint in the observations relative to fingerprint strength in natural climate noise.
The space - time structure of natural climate variability needed to determine the optimal fingerprint pattern and the resultant signal - to - noise ratio of the detection variable is estimated from several multi-century control simulations with different CGCMs and from instrumental data over the last 136 y. Applying the combined greenhouse gas - plus - aerosol fingerprint in the same way as the greenhouse gas only fingerprint in a previous work, the recent 30 - y trends (1966 — 1995) of annual mean near surface temperature are again found to represent a significant climate change at the 97.5 % confidence level.