10. Image Credits
2. Working with Time Series
The coastline in the southern North Sea along the coasts of Denmark, Germany and The Netherlands...
Photography and graph
Photography and graph
Last access: 30.06.2009
Time series of air (red curve) and seawater temperature (blue curve), salinity and water level measured during eight days in June 2007.
Graph
Graph
Time series as above, but for eight days in December 2007..
Graph
Graph
Time series of air (red curve) and seawater temperature (blue curve) and seawater salinity measured between October 2002 and March 2009.
Graph
Graph
Monthly averaged time series data of air (red curve) and seawater temperature (blue curve) and salinity measured between October 2002 and March 2009.
Graph
Graph
Near-surface water temperature averaged over the entire North Sea in October, between 1968 and 2006.
Graph
Graph
Bundesamt für Seeschiffahrt und Hydrographie, Hamburg, Germany
Last access: 03.07.2009
Averaged water temperature (blue points) near Spiekeroog island in October, between 2002 and 2008.
Graph
Graph
...and a selection of fit lines
Graph
Graph
Same diagram as above but in x/y coordinates.
Graph
Graph
Centroid P(x,y) of the data points, with x=4.08 and y=19.01.
Graph
Graph
Distance to fit line, version 1.
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Graph
Distance to fit line, version 2.
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Graph
Data points in x/y coordinates
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Graph
Data points, their centroid P(x,y) and linear best-fit line f(x)=ax+b.
Graph
Graph
Seawater temperature near Spiekeroog in July 2003 - 3008, mean July temperature...
Graph
Graph
Question: Correlated or uncorrelated
Graph
Graph
The image is a Wikimedia Commons file created by User: Jtneill under the terms of the
GNU Free Documentation Licence, Version 1.2.
Last access: 10.07.2009
The data shown is the monthly atmospheric carbon dioxide density in parts per million by volume (ppmv) for Mauna Loa, 1959 − 2005
Graph, plotted by Keith Raymond McCloy, Aarhus University, Denmark using Mauna Loa Laboratory data
Graph, plotted by Keith Raymond McCloy, Aarhus University, Denmark using Mauna Loa Laboratory data
Last access: 09.06.2009
The trend in atmospheric carbon dioxide at Mauna Loa from 1959 to 2005 according to the parabolic fit to the data
Graph
Graph
Keith Raymond McCloy, Aarhus University, Denmark
By subtracting the trend estimated using the parabolic fit, from the actual data, we get the residuals
Graph
Graph
Keith Raymond McCloy, Aarhus University, Denmark
The seasonal cycle
Graph
Graph
Keith Raymond McCloy, Aarhus University, Denmark
The residuals left over after removing the seasonality
Graph
Graph
Keith Raymond McCloy, Aarhus University, Denmark
The frequency graph for our data. The central value can be considered to have a frequency of zero and an infinitely long wavelength; it is like a constant term
Graph
Graph
Keith Raymond McCloy, Aarhus University, Denmark
A closer look at the frequency graph
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Graph
Keith Raymond McCloy, Aarhus University, Denmark
The frequencies selected to be removed
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Graph
Keith Raymond McCloy, Aarhus University, Denmark
The residuals that remain after the residuals dataset above are removed from the dataset used as the source to this analysis. This dataset still contains some structure
Graph
Graph
Keith Raymond McCloy, Aarhus University, Denmark