SDA4: Proxies for geophysical phenomena and long terms trends

The computation of seven historical data sets, over 2.5 solar cycles, since end of 1996 (more than 10^10 values), opening the way to new applications, has been completed, after one year of continuous parallel computations at UPC-IonSAT linux servers:

• VTEC Global Ionospheric Maps (GIMs) 
• Differential Code Biases (DCBs) 
• VTEC gradient Global Ionospheric Maps (GIMs) 
• Ionospheric Storm Scale Index GIMs (IsUG) 
• Global Electron Content (GEC) time-series
• Ne and Ne (v) gradient datasets

They are available at UPC-IonSAT repository: https://chapman.upc.es/tomion/DISPEC/SDA4/.

Additionally, a small docker has been developed to simultaneously represent both VTEC and Iscale at any given location, and during any time interval that can be selected, since 1997, and as long as up to one year. It can be found, including the executive instructions for running it, here.