Sentences with phrase «nonlinear trends»

Different approaches have been used to compute the mean rate of 20th century global mean sea level (GMSL) rise from the available tide gauge data: computing average rates from only very long, nearly continuous records; using more numerous but shorter records and filters to separate nonlinear trends from decadal - scale quasi-periodic variability; neural network methods; computing regional sea level for specific basins then averaging; or projecting tide gauge records onto empirical orthogonal functions (EOFs) computed from modern altimetry or EOFs from ocean models.

The EMD approach is used to extract physically meaningful modes and nonlinear trends from nonlinear and non-stationary time series that can not be captured by a linear least - square fit.

Everyone should consider the possibility that for some indices, North Atlantic correlations (in correlation maps) are depressed by the North Atlantic's sensitivity (being the smaller northern basin surrounded by a lot of land / ice, resulting «higher continentality»), which gives it a propensity towards high amplitude oscillations, including decadal - timescale nonlinear trends.

[Response: You're missing the argument about the importance of nonlinear trends, particular wrt the large increase in warming since 1980, in driving the pattern of expected and observed extremes, as discussed on pages 3 - 4 of the article.

It does that with analytical solutions for linear trends and Monte Carlo simulations for nonlinear trends.

With a nonlinear trend, what happened from 1880 to 1910 is relatively less important than it would be in an analysis based on a linear trend — Jim]

We therefore repeated the calculation excluding this data point, using the 1910 — 2009 data instead, to see whether the temperature data prior to 2010 provide a reason to anticipate a new heat record.With a thus revised nonlinear trend, the expected number of heat records in the last decade reduces to 0.47, which implies a 78 % probability -LSB-(0.47 − 0.105) ∕ 0.47] that a new Moscow record is due to the warming trend.

The observed linear trends are very slightly steeper than the nonlinear trend lines after 1990.

In fact, as long as any nonlinear trend is assumed a prori, you get nonorthogonality and the separability of the low - passed data into components SAW, ASW, and RES is frivolous not only in the physical sense, but also in the analytic.

3) The removal of any nonlinear trend destroys the orthogonality of decomposition.

Gomez annual average # 18O (blue), running decadal mean (red) and nonlinear trend (black).

Not exact matches

«What we found is that it's not a linear relationship between the nitrous oxide and the [nitrogen fertilizer] rate applied, but a nonlinear, exponential trend across many different crop types,» including corn, major grain types, rice and grasses, said study co-author Neville Millar, senior research associate with Michigan State's W.K. Kellogg Biological Station.

The development trajectory becomes nonlinear: prevailing trends collapse and in its place various complex developments arise.

Extrapolating even well - studied trends to the future is difficult because interactions within the ecosystem will change under variable conditions, not all relationships in the ecosystem are understood, and the nonlinear thresholds to transitions are not yet recognized.

In fact, the arctic trend from 1975 to the present is also demonstrably nonlinear, and a linear trend again underestimates the warming.

The arctic trend from 1935 to 2007 is demonstrably nonlinear — a linear trend can easily be shown to underestimate the warming.

I hate idiots that compute linear trends for nonlinear phenomenon.

«My view, is that focusing on a linear trend with respect to a actual nonlinear signal is a substantial oversimplication of how we should expect the climate sytstem to behave both naturally, and in response to the diversity of human climate forcings.»

A generalized nonlinear mixed model was used for modeling temporal trends of tree mortality and recruitment rates, and a linear mixed model was used for modeling temporal trends of tree growth rates (Methods).

«On the trend, detrending, and variability of nonlinear and nonstationary time series.»

And Kate is right, that a 4 - or 5 - year trend is pretty meaningless anyway since sea level changes are decidedly nonlinear.

I further assert that if the temperature record at that site is broadly similar to the Moscow record (nonlinear increasing trend), an analysis will yield similar results to what is shown in the paper.