Kristine's GNSS-IR WebApp


This webapp will create a quicklook Lomb Scargle Periodogram (LSP) for a single day of GPS data. We use these to determine the dominant reflector heights, which are then used to estimate snow accumulation, soil moisture, tides, permafrost melt, etc. The fundamentals shown here were the underpinnings of the PBO H2O project.

The goal of this webapp is to give you a feel for the reflection characteristics of a particular site, so you can decide whether to invest more time in installing the real reflectometry code which is on my gitHub account. There is more information about the web app and how you should interpret the results at this link. There are also sample inputs/outputs at the bottom of this page.


Required Inputs:

Optional Inputs:


Some stations you could try:

Cryosphere Snow & Soil Moisture Water Levels
lorg,phnx,wlly: Antarctica. Use default settings. Has L2C. example p038, my favorite bare soil site. Use defaults. example at01, the BEST water site. Use RH of 5 to 20 m and elevation angles of 5-15. It has L2C. example during winter, example during summer.
smm3, Summit Camp Greenland. Use RH of 8 to 20 m, elevation angles of 5-15. Has L2C. example p360, the poster child for snow. Use defaults. example sc02, not a great site, but it's the one everyone uses. Use RH of 2 to 9 m and elevation angles of 5-13. No L2C in the default UNAVCO RINEX files. example
gls1, gls2, gls3: the GLISN sites in Greenland. Use defaults. example p041, where it all started. Use defaults. example mchn, Lake Superior. Use defaults, though not doy 100. example

Thank you to raxod502, Evan Crouch, realpython.com, Julian Nash, Bucky Roberts, Joakim Strandberg, Felipe Nievinski, Simon Williams, University of Nevada Reno, UNAVCO, CDDIS, SONEL, SOPAC.