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• https://data.amisr.com/madrigal/

• OpenMadrigal web site

Step 1: Download Python, Matlab, and/or IDL Remote APIs

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1. Make sure you have python installed. If not, install it from python.org.

2. The easiest way to install is: pip install madrigalWeb (you may need to be sudo on unix)

3. If that doesn't work, install the remote python madrigal api from www.openmadrigal.org, and you will need to uncompress the file . Then you will need to run python setupMadrigalWeb.py install. If you are installing on Windows, you will need to open a command prompt, and then change directory to where you uncompressed the file. From windows the python command may be something like c:\python25\python.exe setupMadrigalWeb.py install. (either .whl or .tar.gz). Then you will need to run pip install madrigalweb-<version>/. All the command line scripts (globalIsprint.py, madrigalPColorglobalDownload.py, and madrigalScatter.pyetc) will be put into your PATH and so can be called directly from the command line.

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IDL installation: The IDL version is simply *.pro files, so they need to to put in a standard IDL directory.

Step 2: Create and run a globalDownload script

globalDownload is a simple script that will allow you to download a whole series of files, in any format - ascii, Hdf5, or netCDF4. Generate the script using the SRI CEDAR Madrigal 3 web site at httphttps://cedar.openmadrigal.org and choose org and choose Access Data, then Create a command to download multiple exps, then Download a group of files as is. You specify the time range, the instruments, the format, the programming language, and, optionally, the kinds of data and other filters.

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• Go to the CEDAR Madrigal archive site, and choose Access Data, then Create a command to download multiple exps, then Download data with selected parms/filters.

• Choose Instrument type Distributed Ground Based Satellite Receivers, then instrument World-wide GPS Receiver Network.

• Choose any date range that covers two days between 2001 and three days in the past.
• Choose and file format you wish (Hdf5, ascii, or netCDF4), along with programming language.
• If you are saving the output as ascii, you can choose whether to save all data to one file, or to a directory with one file for each file analyzed.

• Expand the Select parameters section.

• Choose the parameters year,month,day,hour,min,sec,gdlat,glon,tec,dtec.

• Expand the Optional filters section.

• Choose Minimum Scallop TEC Processing as the data type.  The line of sight data is too large to analyze dynamically.

• Add three filters:

• Hit the Select parameters button.

• Choose the parameters year,month,day,hour,min,sec,gdalt,gdlat,glon,tec,dtec and hit Done.

• Choose Continue at the bottom.

• Select the language you are using, and hit OK.

• Verify the script runs successfully as is. If there is a problem, compare to the scripts at the top.