Using simple commands in a message written with your e-mail editor, you specify data subsets from the archive that will be sent to you via e-mail. Although the command format is rigid, it is a simple line-oriented structure. If you wish to do more with the data than just read it, you will need an editor that allows you to cut the data from the return message and save it to a file. An editor that allows you to examine text lines up to 132 characters long is also desirable.
The command format for requesting information from the archive is typically a single word on one line (the DATA command requires additional parameters on additional lines).
We suggest that you order the metadata files listed below before attempting to download solar radiation data.
INFOTo obtain a complete list of site names and site codes, mail the following command:
STATIONSTo obtain documentation on the data and data formats, mail the following command:
DATA SITE site1[ site2 ...siteN] MEAS measurement1[ measurement2 ...measurementN] YEAR year1[ year2 ...yearN]where
GLOBAL (Global solar radiation) DIFFUSE (Diffuse solar radiation) DOWNWARD (Downward atmospheric radiation) SUNSHINE (Sunshine duration) DIRECT (Direct solar radiation) TOTAL (Net total radiation) TERNET (Net terrestrial surface radiation (upward)) TERSURFACE (Terrestrial surface radiation) REFLECTED (Reflected solar radiation) SPECTRAL (Spectral radiation components) ALL (All available measurements (see note below))
SIZE nAllows you to specify a maximum size (in kilobytes) for the return message. Some systems truncate messages beyond a threshold size. (For example, America Online limits messages to about 8K.) The default setting is 32K. You may specify a size up to 1024K (1 megabyte). The command format is the word SIZE followed by a number; for example, "SIZE 16" specifies a maximum message size of 16 kilobytes.
NEWSSends a text file of news about the WRDC and the automated data distribution system.
STOPForces the system to ignore all subsequent lines in the command message. When used as the last line of your message, this prevents the mailer from seeing automated signature lines inserted by your mail system. Such lines would normally be returned to you in error messages.