Recipe: Retrieve (global) data from FTP server: Difference between revisions
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<span style="color:red"><font size=40>NOTE: NCCS has disabled the FTP option. It no longer works!</font></span> | |||
Back to [[G5NR Data Access Guide]]. | |||
== Problem == | == Problem == | ||
We want to access G5NR data by downloading files | We want to access G5NR data by downloading files from the <code>ftp</code> server using either a web browser or the command line tool <code>wget</code>. | ||
== Solution == | == Solution == | ||
'''NOTE:''' If you are bookmarking an <code>ftp</code> location you may need to manually add G5NR@ to the bookmarked url. | |||
The base url for G5NR data is | The base url for G5NR data is | ||
ftp://G5NR@ftp.nccs.nasa.gov/c1440_NR/ | ftp://G5NR@ftp.nccs.nasa.gov/Ganymed/7km/c1440_NR/ | ||
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: | 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 | DATA | ||
| |-- type | |---resolution | ||
| | |-- collection | | |---type | ||
| | | |-- year | | | |---collection | ||
| | | | |-- month | | | | |---year | ||
| | | | | |-- day | | | | | |---month | ||
| | | | | |---day | |||
[some details on what the types are etc.] | [some details on what the types are etc.] | ||
| Line 22: | Line 30: | ||
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 | 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/c1440_NR/DATA/0.5000_deg/inst/inst01hr_3d_T_Cv/Y2006/M09/D18. | 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. | At this location, a file may be downloaded by simply clicking on the file name. | ||
| Line 29: | Line 37: | ||
The command line tool <code>wget</code> can be used to retrieve the same files as | The command line tool <code>wget</code> can be used to retrieve the same files as | ||
wget ftp://G5NR:@ftp.nccs.nasa.gov/c1440_NR/DATA/0.5000_deg/inst/inst01hr_3d_T_Cv/Y2006/M09/D18/* | 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. | 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 | To download a file for a specific time, say 0900z, we can use | ||
wget ftp://G5NR@ftp.nccs.nasa.gov/c1440_NR/DATA/0.5000_deg/inst/inst01hr_3d_T_Cv/Y2006/M09/D18/c1440_NR.inst01hr_3d_T_Cv.20060918_0900z.nc4 | 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 == | == Discussion == | ||
| Line 40: | Line 48: | ||
== See Also == | == See Also == | ||
[[ | # File Spec: [[File:G5NR-Ganymed-7km FileSpec-ON6-V1.0.pdf]] | ||
== No Warranty == | == No Warranty == | ||
== Copyright == | == Copyright == | ||
Latest revision as of 11:23, 10 April 2019
NOTE: NCCS has disabled the FTP option. It no longer works!
Back to G5NR Data Access Guide.
Problem
We want to access G5NR data by downloading files from the ftp server using either a web browser or the command line tool wget.
Solution
NOTE: If you are bookmarking an ftp location you may need to manually add G5NR@ to the bookmarked url.
The base url for G5NR data is
ftp://G5NR@ftp.nccs.nasa.gov/Ganymed/7km/c1440_NR/
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:
DATA |---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 inst01hr_3d_T_Cv 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 wget 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 * 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