jordanblocher / el-nino Goto Github PK

This software is connected to the Azimuth Code Project's Experiments in El Nino analysis and prediction.

This converts netCDF files containing surface temperature data from NOAA (eg air.sig995.1951.nc) into a format more easily readable by other programs in other languages. You will need to edit it to your requirements:

• Change the working directory
• Change the ranges of latitude and longitude
• Change the range of years

As supplied, it converts 3 years for 4 grid points covering Scotland. I’ve put the Ludescher et al Pacific co-ordinates in comments. More instructions are in the script.

Then start R, and copy and paste the whole file into the R console. (There are other ways of running R scripts but this is simplest for novices).

Aimed at replicating Ludescher et al, 2013. As of 26 June 2014, it is close, but not identical. For an explanation see Part 4 of the El Niño Project series.

This file has the average link strength S as computed by ludescher.R at 10-day intervals, starting from day 730 and going until day 12040, where day 1 is the first of January 1948. For an explanation see Part 4 of the El Niño Project series.

The second column in this file lists the average link strengths S as computed by ludescher.R at 10-day intervals, starting from day 730, and going until day 24090, where day 1 is 1 January 1948. The first column numbers these items from 1 to 2337. For an explanation see Part 4 of the El Niño Project series.

The second column in this file lists the average link strengths S as computed by Blake Pollard using a modified version of ludescher.R at daily intervals, starting from day 730 and going until day 24090, where day 1 is 1 January 1948. The first column numbers these items from 730 to 24090. For an explanation see Part 4 of the El Niño Project series.

The second column in this file lists the average link strengths S as computed by Blake Pollard using a modified version of ludescher.R at monthly intervals, starting from January 1950 and going until December 2013. The first column numbers these items from 1 to 768. For an explanation see Part 4 of the El Niño Project series.

Makes maps of the Pacific, one per quarter from 1951 to 1979, showing covariances of grid points with the "Ludescher et al basin"