NOUS41 KWBC 301655
PNSWSH

Public Information Statement 26-38
National Weather Service Headquarters Silver Spring MD
1255 PM EDT Thu Apr 30 2026

To:	 Subscribers:
	 -NOAA Weather Wire Service
	 -Emergency Managers Weather Information Network
	 -NOAAPort
	 Other NWS Partners, Users and Employees

From:	 Clinton Wallace, Director
	 Space Weather Prediction Center

Subject: Soliciting Comments through October 27, 2026 on the
Experimental Use of Commercial Data in the Global Total Electron
Content (GloTEC) Ionosphere Model

Through October 27, 2026, the National Weather Service (NWS)
Space Weather Prediction Center (SWPC) in Boulder, CO, is
soliciting comments on the Experimental Use of Commercial Data
in the Global Total Electron Content (GloTEC) ionosphere model,
located at:

https://testbed.swpc.noaa.gov/products/experimental-glotec


The GloTEC ionosphere model was developed in-house at SWPC. It
is a real-time data assimilation system based on the Gauss-
Markov Kalman Filter. It ingests ground-based and space-based
slant TEC measurements to estimate 3-dimensional electron
density. The electron density is integrated vertically to
produce TEC products for the Continental United States, North
America, and the globe.

For more information about the experimental use of commercial
data in the GloTEC model, review the product description
document at this link:

https://nsdesk.servicenowservices.com/api/g_noa/nwspc/res2/fee0c
1181bc8cf180d690f67624bcbe5

Input on the GloTEC model can be provided to:

Tzu-Wei Fang
GloTEC Project Lead
NOAA Space Weather Prediction Center
Boulder, CO
Email: tzu-wei.fang@noaa.gov


National Public Information Statements are online at:

https://www.weather.gov/notification/