Saturday, April 28, 2012

Interactive JS plotter data list

Some more news and information about the Moyhu interactive plotter. The main content of the post is a listing of the data, with links. But first some discussion of versions and some updates on progress.

I have reinstated in V2 the ability to copy a URL which will reinstate the plot as you see it. This is intended for linking. There are minor limitations - it won't pass on user data, and it won't regenerate vectors made with the Calc box.

Thursday, April 19, 2012

Interactive JS plotter Ver 2

Time for the next version of the interactive Javascript plotter. A few new capabilities, and some limitations removed.

The major new things are:
  • A new layout. The data now sits in selection boxes, so I can include mich more of it. It does mean two clicks instead of one.
  • A new multiple regression capability, which I think is quite powerful. You can use any of a number of calculated functions, or any data vectors as regressors. For example you could regress temperatures against various forcings.
  • To complement this, a calculation capability - you can create and plot linear combinations (eg differences) of data vectors.
  • An image can be used as background. This is useful for superimposing plots on published graphs (as in the Hansen predictions post).
  • A user input capability. You can input your own images, or your own data.
  • New windows for the markers for the plotted curves and their axes. This removes the limitation on how many you can have.
  • More smoothing options
One thing that doesn't currently work is the ability to provide a web address that would regenerate the current state. This is because of the greater number of state variables. But I'm working on it. Update: it works. See new post.

The new data consists mainly of more complete collections of things like the regional data of GISS and UAH, and more NCEP data. And HADCRUT 4 is included. But there's room for more - suggestions welcome.

Here's the plotter - details below.

Monday, April 16, 2012

GISS Temp for March 2012 - comparison

TempLS showed a rise in global mean anomaly in March, 2012, from 0.19 °C to 0.293 °C. GISS showed a somewhat smaller rise, from 0.4 °C to 0.46 °C. The satellite indices showed rises larger than TempLS. Time series graphs are shown here

As usual, I compared the previously posted TempLS distribution to the GISS plot. Here is GISS:

And here is the previous TempLS spherical harmonics plot:

There is a disagreement over the Phillipines, where I get a cold spot and GISS doesn't. Otherwise they match well.

Previous Months


More data and plots

Saturday, April 14, 2012

US temperature trends.

These are being discussed again. WUWT has rediscovered the NOAA analysis of USHCN adjustments to ConUS (lower 48 states) temperatures. They have inflated the original Fahrenheit adjustment trends restated in Celsius to make their argument. It's accpmpanied by a recent analysis by Roy Spencer of ISH data, which he has assembled into an index for ConUS, and finds that the trend 1973-present is small. But his figure includes his own adjustment for population density, and comes out to 0.013°C/decade. This he compares to USHCN at 0.245°C/decade, and attributes the difference to USHCN adjustment. CRUtem 3, which doesn't make the same adjustments, gets a trend of 0.198°C/decade.

It's unfortunate that Roy doesn't seem to give any trends from ISH that aren't subject to his population density adjustment, because then we could compare like with like. However, I will look at the GHCN unadjusted data for ConUS. This is a real test of whether the WUWT (and RS) claim that the trend is due entirely to adjustment is justified. It isn't much of a test if you strike their adjustments and then introduce a big new one.

Wednesday, April 11, 2012

March 2012 temperatures up 0.1°C

The TempLS analysis, based on GHCNV3 land temperatures and the ERSST sea temps, showed a monthly average of 0.29°C, up from 0.19 °C in February. This is in line with satellite LT trends, though a more modest rise. There are more details at the latest temperature data page.

Below is the graph (lat/lon) of temperature distribution for March. The big US hotspot is very clear