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Download
The Download menu item provides direct access to commonly used datasets in the IRI Data Library. Three types of data can
be downloaded:
Selecting one of the datasets will open a window browser in your default browser. All the datasets accessible from within CPT
consist of monthly data, but it is possible to calculate seasonal averages or totals. If monthly data are required, enter the
corresponding month number (1 for January, 2 for February, etc.) as the First month of data to download, and 1 for the
subsequent prompts. If a seasonal average or total is required, enter the number of the month for the first month of the
season, and then the number of months in the season, leaving the Number of lags as 1. For example, for a April - June
(AMJ) average, enter 4 (for April), 3 (for a 3-month average) and 1 (one season only). If you want to download April, May and
June as separate months (i.e., lagged fields), then the responses should be 4 (for April as the first month), 1 (for no
seasonal averaging) and 3 (three months separately). For seasonal averaging and multiple lags the seasons will be sequential;
for example, entries of 4 (first month April), 2 (2-month seasons), and 3 (3 consecutive seasons) will download data for (AM,
JJ, and AS). It is not possible to download seasonally overlapping data (e.g., JFM, FMA, MAM) using this feature.
If you want to combine datasets, download the individual datasets first, and then use the
Data ~ Merge menu item.
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