View source for Recipe: Retrieve (global) data from HTTPS server

Back to [[G5NR Data Access Guide]].

== Problem ==

We want to access G5NR data by downloading files from the <code>http</code> server using either a web browser or the command line tool <code>wget</code>.

== Solution ==

The base url for G5NR data is
 ftp://G5NR@ftp.nccs.nasa.gov/Ganymed/7km/c1440_NR/DATA

At this location, the data is organized by resolution (0.5000_deg/0.0625_deg), type (const/inst/tavg/tdav), collection name, year, month and day as follows:

 |-- resolution
 |   |-- type
 |   |   |-- collection
 |   |   |   |-- year
 |   |   |   |   |-- month
 |   |   |   |   |   |-- day

[some details on what the types are etc.]

==== Download using a web browser ====

A web browser can be used to browse directories, read and retrieve files. To retrieve the collection <code>inst01hr_3d_T_Cv</code> for the day 2006-09-18, one needs to point to
 ftp://G5NR@ftp.nccs.nasa.gov/Ganymed/7km/c1440_NR/DATA/0.5000_deg/inst/inst01hr_3d_T_Cv/Y2006/M09/D18.

At this location, a file may be downloaded by simply clicking on the file name.

==== Download file(s) using the command line tool wget ====

The command line tool <code>wget</code> can be used to retrieve the same files as
 wget ftp://G5NR:@ftp.nccs.nasa.gov/Ganymed/7km/c1440_NR/DATA/0.5000_deg/inst/inst01hr_3d_T_Cv/Y2006/M09/D18/*

The <code>*</code> at the end would retrieve all (24) files for the given day.

To download a file for a specific time, say 0900z, we can use
 wget ftp://G5NR:@ftp.nccs.nasa.gov/Ganymed/7km/c1440_NR/DATA/0.5000_deg/inst/inst01hr_3d_T_Cv/Y2006/M09/D18/c1440_NR.inst01hr_3d_T_Cv.20060918_0900z.nc4

== Discussion ==

== See Also ==

# File Spec: [[File:G5NR-Ganymed-7km FileSpec-ON6-V1.0.pdf]]

== No Warranty ==
== Copyright ==